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ECE Regulation 106

Uniform provisions concerning the approval of pneumatic tyres for agricultural vehicles and their trailers

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0% found this document useful (0 votes)

700 views148 pages

ECE Regulation 106

Uniform provisions concerning the approval of pneumatic tyres for agricultural vehicles and their trailers

Uploaded by

ada.liwang

We take content rights seriously. If you suspect this is your content, claim it here.

Available Formats

Download as PDF, TXT or read online on Scribd

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E/ECE/324/Rev.2/Add.105/Rev.2−E/ECE/TRANS/505/Rev.2/Add.105/Rev.

2 December 2013

Agreement

Concerning the Adoption of Uniform Technical Prescriptions for

Wheeled Vehicles, Equipment and Parts which can be Fitted and/or
be Used on Wheeled Vehicles and the Conditions for Reciprocal
Recognition of Approvals Granted on the Basis of these
Prescriptions*

(Revision 2, including the amendments which entered into force on 16 October 1995)
_________

Addendum 105: Regulation No. 106

Revision 2

Incorporating all valid text up to:

Corrigendum 1 to Revision 1 of the Regulation (Erratum by the secretariat)
Supplement 7 to the original version of the Regulation - Date of entry into force: 24 October 2009
Supplement 8 to the original version of the Regulation - Date of entry into force: 17 March 2010
Supplement 9 to the original version of the Regulation - Date of entry into force: 27 January 2013
Supplement 10 to the original version of the Regulation - Date of entry into force: 3 November 2013

Uniform provisions concerning the approval of pneumatic tyres for

agricultural vehicles and their trailers
_________

UNITED NATIONS

* Former title of the Agreement: Agreement Concerning the Adoption of Uniform Conditions of
Approval and Reciprocal Recognition of Approval for Motor Vehicle Equipment and Parts, done
at Geneva on 20 March 1958.

GE.13-
E/ECE/324/Rev.2/Add.105/Rev.2
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2

Regulation No. 106

Uniform provisions concerning the approval of pneumatic

tyres for agricultural vehicles and their trailers
Page

Contents
Regulation
1. Scope ................................................................................................................................................... 4
2. Definitions ........................................................................................................................................... 4
3. Markings ............................................................................................................................................. 9
4. Application for approval ..................................................................................................................... 10
5. Approval.............................................................................................................................................. 11
6. Requirements....................................................................................................................................... 12
7. Modification of tyre type and extension of approval .......................................................................... 14
8. Conformity of production .................................................................................................................... 15
9. Penalties for non-conformity of production ........................................................................................ 15
10. Production definitively discontinued ................................................................................................... 15
11. Names and addresses of Technical Services responsible for conducting approval tests,
of test laboratories, and of Type Approval Authorities ...................................................................... 15
Annexes
1 Communication ................................................................................................................................... 17
2 Arrangement of approval mark ........................................................................................................... 19
3 Arrangement of tyre markings ............................................................................................................ 20
4 List of load capacity indices (LI) and corresponding maximum mass to be carried (kg) .................... 25
5 Theoretical rim, outer diameter and nominal section width of tyres of certain size designations ....... 26
6 Test method for measuring tyre dimensions ....................................................................................... 45
7 Variation of load capacity with speed ................................................................................................. 46
8 Test procedure to assess tyre resistance to bursting ............................................................................ 49
9 Load/speed test procedure ................................................................................................................... 50
10 Tyre classification code ....................................................................................................................... 53
11 Example of the pictogram to be marked on both tyre sidewalls of the tyres to explicit the
maximum inflation pressure not to be exceeded for bead seating during tyre mounting .................... 54

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E/ECE/324/Rev.2/Add.105/Rev.2
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2

1. Scope
This Regulation covers new pneumatic tyres designed primarily, but not only,
for agricultural and forestry vehicles (power-driven vehicles in category T1),
agricultural machines (power-driven and trailed) and agricultural trailers, and
identified by speed category symbols corresponding to speeds of 65 km/h
(speed symbol "D") and below.
It does not apply to tyre types designated primarily for other purposes, such
as:
(a) Construction application (tyres marked "Industrial" or "IND" or
"R4"or "F3");
(b) Earth-moving equipment;
(c) Industrial and lift trucks.

2. Definitions
For the purposes of this Regulation:
2.1. "Type of agricultural tyre" means a category of tyres which do not differ in
such essential respects as:
2.1.1. The manufacturer;
2.1.2. Tyre-size designation;
2.1.3. Category of use:
(a) Tractor - steering wheel;
(b) Tractor - drive wheel - standard tread;
(c) Tractor - drive wheel - special tread;
(d) Implement - traction;
(e) Implement - trailer;
(f) Implement - mixed applications;
(g) Forestry machines – standard tread;
(h) Forestry machines – special tread.
2.1.4. Structure (diagonal (bias-ply), bias-belted, radial-ply);
2.1.5. Speed category symbol;
2.1.6. Load capacity index;
2.1.7. Tyre cross-section;
2.2. For reference on the following terms see explanatory figure in Appendix 1.

1
As defined in the Consolidated Resolution on the Construction of Vehicles (R.E.3.), document
ECE/TRANS/WP.29/78/Rev.2, para. 2. -
www.unece.org/trans/main/wp29/wp29wgs/wp29gen/wp29resolutions.html

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E/ECE/324/Rev.2/Add.105/Rev.2
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2

2.3. "Structure of a tyre" means the technical characteristics of the tyre carcass.
The following structures are distinguished in particular:
2.3.1. "Diagonal" or "bias-ply" describes a tyre structure in which the ply cords
extend to the bead and are laid at alternate angles of substantially less than
90 to the centreline of the tread;
2.3.2. "Bias-belted" describes a tyre structure of diagonal (bias-ply) type in which
the carcass is restricted by a belt comprising two or more layers of
substantially inextensible cord material laid at alternate angles close to those
of the carcass;
2.3.3. "Radial" describes a tyre structure in which the ply cords extend to the beads
and are laid substantially at 90 to the centreline of the tread, the carcass
being stabilised by an essentially inextensible circumferential belt;
2.4. "Bead" means the part of a tyre which is of such shape and structure as to fit
the rim and hold the tyre on it;
2.5. "Cord" means the strands forming the fabric of the plies in the tyre;
2.6. "Ply" means a layer of rubber-coated parallel cords;
2.7. "Carcass" means that part of a tyre other than the tread and the rubber
sidewalls which, when inflated, bears the load;
2.8. "Tread" means that part of a tyre which comes into contact with the ground;
2.9. "Sidewall" means the part of the tyre, excluding the tread, which is visible
when the tyre, fitted to a rim, is viewed from the side;
2.10. "Section width (S)" means the linear distance between the outsides of the
sidewalls of an inflated tyre, excluding elevations due to labelling (marking),
decoration or protective bands or ribs;
2.11. "Overall width" means the linear distance between the outside of the
sidewalls of an inflated tyre, including labelling (marking), decoration and
protective bands or ribs;
2.12. "Section height (h)" means a distance equal to half the difference between the
outer diameter of the tyre and the nominal rim diameter;
2.13. "Nominal aspect ratio (Ra)" means one hundred times the number obtained
by dividing the number expressing the nominal section height in millimetres
by the number expressing the nominal section width in millimetres;
2.14. "Outer diameter (D)" means the overall diameter of an inflated new tyre;
2.15. "Tyre-size designation" means a designation showing:
2.15.1. The nominal section width (S1). This value must be expressed in mm.
2.15.2. The nominal aspect ratio (Ra).
2.15.3. An indication of the structure, placed in front of the nominal rim diameter
marking, as follows:
2.15.3.1. On diagonal (bias-ply) tyres, the symbol "-" or the letter "D";
2.15.3.2. On radial-ply tyres, the letter "R";
2.15.3.3. On bias-belted tyres, the letter "B".
2.15.4. The conventional number "d" denoting the nominal rim diameter;

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E/ECE/324/Rev.2/Add.105/Rev.2
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2

2.15.5. Optionally, the letters "IMP" after the nominal rim diameter marking in case
of implement tyres;
2.15.6. Optionally, the letters "FRONT" after the nominal rim diameter marking in
case of tractor steering wheel tyres;
2.15.7. However for tyres listed in Annex 5 the "tyre size designation" is that shown
in the first column of those tables.
2.15.8 The letters "IF" before the nominal section width in case of "Improved
Flexion Tyre".
The letters "VF" before the nominal section width in case of "Very High Flexion
Tyre".
2.15.9. The letters "CFO" after the nominal rim diameter marking in case of
"Improved Flexion" or "Very High Flexion" tractor-drive wheel tyres
specifically designed for the equipments of machines to be used in Cyclic
Field Operations.
2.15.10. The letters "CHO" after the nominal rim diameter marking in case of
standard tractor-drive wheel tyres specifically designed for the equipments of
machines to be used in Cyclic Harvesting Operations.
2.16. "Nominal rim diameter (d)" means a conventional number denoting the
nominal diameter of the rim on which a tyre is designed to be mounted and
corresponding to the diameter of the rim expressed either by size codes
(number below 100 - see table for equivalence with millimeters) or in mm
(numbers above 100) but not both;
Value to be used for Value to be used for Value to be used for
"d" "d" "d"
the calculation in the calculation in the calculation in
symbol expressed symbol expressed symbol expressed
paras. 6.2.1 paras. 6.2.1 paras. 6.2.1
by codes by codes by codes
and 6.4 (mm) and 6.4 (mm) and 6.4 (mm)

4 102 18 457 44 1118

5 127 19 483 46 1168
6 152 20 508 48 1219
7 178 21 533 50 1270
8 203 22 559 52 1321
9 229 24 610 54 1372
10 254 25 635 14.5 368
11 279 26 660 15.5 394
12 305 28 711 16.5 419
13 330 30 762 17.5 445
14 356 32 813 19.5 495
15 381 34 864 20.5 521
15.3 389 36 914 22.5 572
16 406 38 965 24.5 622
16.1 409 40 1016 26.5 673
17 432 42 1067 30.5 775

2.17. "Rim" means the support for a tyre-and-tube assembly, or for a tubeless tyre,
on which the tyre beads are seated;

6
E/ECE/324/Rev.2/Add.105/Rev.2
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2

2.18. "Theoretical rim" means the notional rim whose width would be equal to X
times the nominal section width of a tyre; the value "X" must be specified by
the tyre manufacturer or the reference rim width is that mentioned in Annex 5
for the relevant "tyre size designation";
2.19. "Measuring rim" means the rim on which a tyre is fitted for the measurement
of the dimensions;
2.20. "Tractor-drive wheel tyre" means a tyre designed to be fitted to driven axles
of agricultural and forestry tractors (vehicles in categories T) suitable for
sustained high torque service. The tread pattern of the tyre consists of lugs or
cleats;
2.20.1. "Improved Flexion Tyre" or "Very High Flexion Tyre" describes a pneumatic-
tyre structure in which the carcass is more resistant than that of the
corresponding standard tyre.
2.21. "Tractor steering wheel tyre" means a tyre designed to be fitted to non-driven
axles of agricultural and forestry tractors (motor vehicles in category T). The
tread pattern of the tyre generally consists of circumferential grooves and
ribs;
2.22. "Implement tyre" means a tyre designed primarily for agricultural machines
or implements (vehicles in category S) or for agricultural trailers (vehicles in
category R); however it may also equip either front steering wheels and drive
wheels of agricultural and forestry tractors (vehicles in category T), but it is
not suitable for sustained high torque services;
2.23. "Traction tyre" means a tyre designed primarily for the equipment of driven
axles of implements or agricultural machinery, excluding sustained high
torque services. The tread pattern of the tyre generally consists of lugs or
cleats. The type of application is identified with the symbol:

2.24. "Trailer tyre" means a tyre designed for the equipment of non-driven (trailed)
axles of implements, agricultural machinery or trailers;

The type of application is identified with the symbol:

2.25. "Mixed applications tyre" means a tyre designed to be fitted to either driven
and non-driven axles of implements, agricultural machinery or trailers;
2.26. "Service description" means the association of a load capacity index with a
speed category symbol;
2.26.1. In case of implement tyres the service description is supplemented with the
relevant symbol for the type of application concerned (traction or trailer) as
defined in paragraphs 2.23. and 2.24.
2.27. "Supplementary service description" means an additional service description,
marked within a circle, to identify a special type of service (load rating and
speed category) to which the tyre type is also allowed in addition to the
applicable load variation with speed (see Annex 7);

7
E/ECE/324/Rev.2/Add.105/Rev.2
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2

2.28. "Load-capacity index" means one number which indicates the load the tyre
can carry in single formation at the speed corresponding to the associated
speed category and when operated in conformity with the requirements
governing utilisation specified by the manufacturer. The list of these indices
and their corresponding masses is given in Annex 4;
2.29. "Speed category", the reference speed expressed by the speed category
symbol as shown in the table below:
Speed category symbol Reference speed (km/h)
A2 10
A4 20
A6 30
A8 40
B 50
D 65

2.30. "Table: Variation of load capacity with speed" means the tables in Annex 7
showing as a function of the category of use, the type of application, the load
capacity index and the nominal speed category symbol, the maximum load
rating variations which a tyre can withstand when used at speeds different
from that corresponding to its speed category symbol;
2.30.1. The table "Variation of load capacity with speed" is not applicable to the
"supplementary service description".
2.30.2. The table "Variation of load capacity with speed" is not applicable to
"Improved Flexion" or "Very High Flexion" tyres."
2.31. "Maximum load rating" means the maximum mass the tyre is rated to carry:
2.31.1. It must not exceed the percentage of the value associated with the relevant
load capacity index of the tyre as indicated in the table "Load-capacity
variation with speed" (see paragraph 2.30. above), with reference to the
category of use, the speed category symbol of the tyre and the speed
capability of the vehicle to which the tyre is fitted;
2.32. "Tread groove" means the space between the adjacent ribs or blocks in the
tread pattern;
2.33. "Tread lug (or cleat)" means the solid-block element protruding from the
base of the tread pattern;
2.34. "Special tread" means a tyre, the tread pattern and structure of which are
primarily designed to ensure in marshy areas a better grip than that of a
standard tread tyre. The tread pattern of the tyre generally consists of lugs or
cleats deeper than those of a standard tyre;
2.35. "Chunking" means the breaking away of small pieces of rubber from the
tread;
2.36. "Cord separation" means the parting of the cords from their rubber coating;
2.37. "Ply separation" means the parting of adjacent plies;
2.38. "Tread separation" means the pulling away of the tread from the carcass;

8
E/ECE/324/Rev.2/Add.105/Rev.2
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2

2.39. "Test rim" means the rim on which a tyre must be fitted for the performance
test;
2.40. "Tyre classification code" means the optional marking detailed in Annex 10
that identifies the category of use and the particular type of tread pattern and
application as specified by ISO 4251-4.
2.41. Forestry tyre means a tyre designed to be fitted to machines or equipments
used in forestry applications.

3. Markings
3.1. Tyres must bear:
3.1.1. The manufacturer's trade name or mark;
3.1.2. The tyre-size designation as defined in paragraph 2.15.;
3.1.3. An indication of the structure as follows:
3.1.3.1. On diagonal (bias-ply) tyres, no additional marking;
3.1.3.2. On radial-ply tyres, optionally, the word "RADIAL";
3.1.3.3. On bias-belted tyres, the words "BIAS-BELTED";
3.1.4. The "service description" as defined in paragraph 2.26.
3.1.4.1. In the case of implement tyre, the service description must be supplemented
with the relevant application symbol;
3.1.4.2. In the case of implement tyre for mixed applications the tyre must be marked
with two service descriptions one for "trailer" applications and the other for
"traction" applications, each supplemented with the relevant symbol (see
paragraphs 2.23. and 2.24. above) as follows:

3.1.5. The supplementary service description, if applicable.

3.1.6. The inscription "DEEP" (or "R-2") in the case of a special tread tyre;
3.1.7. The inscriptions "F-1" or "F-2" in the case of a tractor steering wheel tyre that
is not already marked as per paragraph 2.15.6. above;
3.1.8. The inscriptions 'LS-1', 'LS-2', 'LS-3' or 'LS-4' in the case of tyres for forestry
machines.
3.1.8.1. "LS-3" identifies special tread tyres.
3.1.8.2. The inscription 'I-3' for implement tyres with traction tread as identified in
Annex 5, Tables 5 and 6.
3.1.9. The inscription "IMPLEMENT" in the case of an implement tyre that is not
already marked as per paragraph 2.15.5. above;
3.1.10. The word "TUBELESS" if the tyre is designed for use without an inner tube;

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E/ECE/TRANS/505/Rev.2/Add.105/Rev.2

3.1.11. The inscription "... bar MAX." (or "… kPa MAX") inside the pictogram
shown in Annex 11, to notify the cold inflation pressure that shall not be
exceeded for bead seating during tyre mounting.
3.1.12. The inscription "IF" shall be added in front of the tyre-size designation when
the tyre is "Improved Flexion Tyre".
The inscription "VF" shall be added in front of the tyre-size designation when
the tyre is "Very High Flexion Tyre".
3.1.13. The inscriptions "CFO" or "CHO", if applicable, may be marked after the
nominal rim diameter.
3.2. The tyre must also be marked with the date of manufacture in the form of a
group of four digits, the first two showing the week and the last two the year
of manufacture. However, this marking shall not be mandatory on any tyre
submitted for approval until two years after the date of entry into force of this
Regulation.2
3.3. The tyre must also bear the type approval mark, the model of which is given
in Annex 2.
3.4. Position of markings
3.4.1. The markings referred to in paragraph 3.1. above shall be moulded on both
sidewalls of the tyre.
3.4.2. The markings referred to in paragraphs 3.2. and 3.3. above shall be moulded
on one sidewall only.
3.4.3. All markings must be clearly and legibly moulded and produced as part of
the process during manufacture. The use of branding or other methods of
marking after completion of the original manufacturing process is not
permitted.
3.5. Annex 3 gives examples of the arrangement of tyre markings.

4. Application for approval

4.1. The application for approval of a type of tyre for agricultural and forestry
services shall be submitted by the holder of the trade name or mark or by his
duly accredited representative. It shall specify:
4.1.1. The tyre size designation as defined in paragraph 2.15. of this Regulation;
4.1.2. The trade name or mark;
4.1.3. The category of use as defined in paragraph 2.1.3. of this Regulation;
4.1.4. The structure;
4.1.5. The speed category symbol;
4.1.6. The load-capacity index of the tyre, specifying in case of implement tyres
that for traction (only) and that for trailer application, if applicable;

2
Before 1 January 2000, the date of manufacture may be indicated by a group of three digits, the first
two showing the week and the last one the year of manufacture.

10
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E/ECE/TRANS/505/Rev.2/Add.105/Rev.2

4.1.7. Whether the tyre is to be fitted with or without an inner tube;

4.1.8. The supplementary service description, if applicable;
4.1.9. The tyre/rim configuration;
4.1.10. The rim to be used for measurements and the rim to be used for tests;
4.1.11. The rim(s) on which the tyre can be mounted;
4.1.12. The inflation pressure (bar or kPa) for measurements;
4.1.13. The factor X referred to in paragraph 2.18. or the applicable table of
Annex 5;
4.1.14. The cold inflation pressure that shall not be exceeded for bead seating during
tyre mounting, as specified by the tyre manufacturer for the tyre type;
4.1.15. The test pressure, in kPa (or in bar).
4.2. On request of the Type Approval Authority, the tyre manufacturer must
also submit a complete technical file for each tyre type containing in
particular sketches or photographs (three copies) to identify the tread
pattern and the envelope of the inflated tyre mounted on the measuring
rim showing the relevant dimensions (see paragraphs 6.1. and 6.2. below)
of the component type submitted for approval. It shall also either contain
the test report issued by an approved test laboratory or be accompanied
by one sample of the tyre type, as requested by the Type Approval
Authority.

5. Approval
5.1. If the type of pneumatic tyre submitted for approval in pursuance to this
Regulation meets the requirements of paragraph 6. below, approval of that
type of tyre shall be granted.
5.2. An approval number shall be assigned to each type approved; its first two
digits (at present 00 for the Regulation in its original form) shall indicate the
series of amendments incorporating the most recent major technical
amendments made to the Regulation at the time of issue of the approval. The
same Contracting Party may not assign the same number to another type of
pneumatic tyre.
5.3. Notice of approval or extension or refusal or withdrawal of approval or
production definitively discontinued of a type of pneumatic tyre pursuant to
this Regulation shall be communicated to the Parties to the 1958 Agreement
which apply this Regulation, by means of a form conforming to the model in
Annex 1 to this Regulation.
5.4. There shall be affixed, conspicuously, to every pneumatic tyre conforming
to a type of tyre approved under this Regulation, in the space referred to in
paragraph 3.3. above and in addition to the markings prescribed in
paragraphs 3.1. and 3.2. above, an international approval mark consisting
of:

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E/ECE/TRANS/505/Rev.2/Add.105/Rev.2

5.4.1. A circle surrounding the letter "E" followed by the distinguishing number of
the country which has granted approval.3
5.4.2. The number of this Regulation followed by the letter "R", a dash and the type
approval number.
5.5. The approval mark shall be clearly legible and be indelible.
5.6. Annex 2 to this Regulation gives an example of the arrangement of the
approval mark.

6. Requirements
6.1. Section width of a tyre
6.1.1. Except as provided by paragraph 6.1.2. below, the section width is calculated
by the following formula:
S = S1 + K (A-A1)
Where:
S is the "section width" expressed in mm related to the measuring rim;
S1 is the "nominal section width" in mm as shown on the sidewall of the
tyre in the tyre-size designation as prescribed;
A is the width (expressed in mm)4 of the measuring rim, as shown by the
manufacturer in the descriptive note;
A1 is the width (expressed in mm)6 of the theoretical rim; it is taken to
equal S1 multiplied by the factor X as specified by the tyre
manufacturer;
and K is taken to equal 0.4.
6.1.2. However, for the types of tyre for which the size designation is given in the
first column of the tables in Annex 5, the theoretical rim width (A1) and the
nominal section width (S1) are given opposite the tyre size designation in
those tables.
6.2. Outer diameter of a tyre
6.2.1. Except as provided by paragraph 6.2.2., the outer diameter of a tyre is
calculated by the following formula:
D=d+2H
Where:
D is the outer diameter expressed in mm;
d is the conventional number denoting the nominal rim diameter
expressed in mm (see paragraph 2.16.);

3
The distinguishing numbers of the Contracting Parties to the 1958 Agreement are reproduced in
Annex 3 to the Consolidated Resolution on the Construction of Vehicles (R.E.3), document
ECE/TRANS/WP.29/78/Rev.2/Amend.3 -
www.unece.org/trans/main/wp29/wp29wgs/wp29gen/wp29resolutions.html
4
Conversion factor from code to mm is 25.4.

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E/ECE/TRANS/505/Rev.2/Add.105/Rev.2

H is the nominal section height in mm and is equal to:

H = 0.01 x Ra x S1
Where:
Ra is the nominal aspect ratio;
S1 is the "nominal section width" in mm.
All as shown on the sidewall of the tyre in the tyre-size designation in
conformity with the requirements of paragraph 2.15.
6.2.2. However, for the types of tyres for which the size designation is given in the
first column of the tables of Annex 5 the outer diameter (D) and the nominal
rim diameter (d) expressed in mm are given opposite the tyre size designation
in those tables.
6.3. Tyre section width: specification of tolerances
6.3.1. The overall width of a tyre may be less than the section width determined
pursuant to paragraph 6.1., or shown in Annex 5;
6.3.2. The overall width of a tyre may not exceed the section width determined
pursuant to paragraph 6.1. by more than the following:
Radial construction: +5 per cent
Diagonal (bias) construction: +8 per cent
6.3.3. However, for the types of tyre for which the size designation is given in the
first column of the tables in Annex 5, the allowed percentages are those given
in the relevant tables, if any.
6.4. Tyre outer diameter: specification of tolerances
6.4.1. The outer diameter of a tyre must not be outside the values D min and D max
obtained from the following formulae:
D min = d + 2 (H x a)
D max = d + 2 (H x b)
Where "H" and "d" are as defined in paragraph 6.2.1.
6.4.1.1. For sizes listed in Annex 5: H = 0,5 (D - d)
(for references see paragraph 6.2. above).
6.4.2. Coefficients "a" and "b" are respectively:
Category of use Radial Diagonal (bias)
a b a b

Steering wheels 0,96 1,04 0,96 1,07

Tractor drive wheels and forestry 0,96 1,04 0,96 1,07
machines - normal
Tractor drive wheels and forestry 1,00 1,12 1,00 1,12
machines – special
Implement 0,96 1,04 0,96 1,07

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6.4.3. However, for the types of tyre for which the size designation is given in the
first column of the tables in Annex 5, the allowed percentages are those given
in the relevant tables, if any.
6.5. Test procedures
6.5.1. The actual dimensions of tyres are measured as prescribed in Annex 6.
6.5.2. The test procedure to assess the resistance of the tyre to burst is described in
Annex 8.
6.5.2.1. A tyre which, after undergoing the relevant test to assess the resistance to
burst, does not exhibit any tread separation, ply separation, cord separation,
broken beads or broken cords is deemed to have passed the test. The tyre
tested shall not be used for any other tests.
6.5.3. The test procedures to assess the suitability of the tyre for the claimed
performances are described in Annex 9.
6.5.3.1. A tyre which, after undergoing the relevant load/speed test, does not exhibit
any tread separation, ply separation, cord separation or broken cords is
deemed to have passed the test. The tyre tested shall not be used for any other
tests.
6.5.3.2. A tyre which, after undergoing the relevant load/speed test, does exhibit
chunking, due to the specific test conditions is deemed to have passed the
test.
6.5.4. Where a tyre manufacturer produces a range of tyres it is not considered
necessary to carry out tests on every type of tyre in the range.

7. Modification of tyre type and extension of approval

7.1. Every modification of a tyre type shall be notified to the Type Approval
Authority which approved the tyre type. That Authority may then either:
7.1.1. Consider that the modifications made are unlikely to have an appreciable
adverse effect and that in any case the tyre still meet the requirements; or
7.1.2. Require a further test report from the Technical Service responsible for
carrying out the tests.
7.2. A modification of the tread pattern of the tyre shall not be considered to
necessitate a repetition of the tests prescribed in paragraph 6. of this
Regulation.
7.3. Confirmation or refusal of approval, specifying the alterations, shall be
communicated by the procedure specified in paragraph 5.3. above to the
Parties to the Agreement which apply this Regulation.
7.4. The Type Approval Authority issuing the extension of approval shall assign a
series number for such an extension and inform thereof the other Parties to
the 1958 Agreement applying this Regulation by means of a communication
form conforming to the model in Annex 1 to this Regulation.

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8. Conformity of production
The conformity of production procedures shall comply with those set out in
the Agreement, Appendix 2 (E/ECE/324-E/ECE/TRANS/505/Rev.2), with
the following requirements:
8.1. The pneumatic tyres approved under this Regulation shall be so
manufactured as to conform to the type approved by meeting the
requirements set forth in paragraph 6. above.
8.2. The Type Approval Authority which has granted type approval may at any
time verify the conformity control methods applied in each production
facility. For each production facility, the normal frequency of these
verifications shall be once every two years.

9. Penalties for non-conformity of production

9.1. The approval granted in respect of a type of pneumatic tyre pursuant to this
Regulation may be withdrawn if the requirement laid down in paragraph 8.1.
above is not complied with or if the tyres taken from the series have failed to
pass the tests prescribed in that paragraph.
9.2. If a Party to the Agreement which applies this Regulation withdraws an
approval it has previously granted, it shall forthwith so notify the other
Contracting Parties which apply this Regulation, by means of a
communication form conforming to the model in Annex 1 to this
Regulation.

10. Production definitively discontinued

If the holder of an approval completely ceases to manufacture a type of
pneumatic tyre approved in accordance with this Regulation, he shall so
inform the Type Approval Authority which granted the approval. Upon
receiving the relevant communication that Authority shall inform thereof
the other Parties to the Agreement which apply this Regulation by means of
a communication form conforming to the model in Annex 1 to this
Regulation.

11. Names and addresses of Technical Services

responsible for conducting approval tests, of test
laboratories, and of Type Approval Authorities
11.1. The Parties to the Agreement which apply this Regulation shall communicate
to the United Nations Secretariat the names and addresses of the Technical
Services responsible for conducting approval tests and, where applicable, of
the approved test laboratories and of the Type Approval Authorities which
grant approval and to which forms certifying approval or refusal or
withdrawal of approval, issued in other countries, are to be sent.

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11.2. The Parties to the Agreement which apply this Regulation may use
laboratories of tyre manufacturers and may designate, as approved test
laboratories, those among them which are situated on their territory or on the
territory of another Party to the Agreement subject to a preliminary
agreement to this procedure by the competent Type Approval Authority of
the latter.
11.3. Where a Party to the Agreement applies paragraph 11.2. above, it may, if it
so desires, be represented at the tests by one or more persons of its choice.
Explanatory figure (see paragraphs 2.2. and 4.1.)
Type cross section

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Annex 1

Annex 1

Communication
(Maximum format: A4 (210 x 297 mm))

issued by : Name of administration:

......................................
......................................
......................................
1

concerning:2 Approval granted

Approval extended
Approval refused
Approval withdrawn
Production definitively discontinued

of a type of pneumatic tyre for motor vehicles pursuant to Regulation No. 106

Approval No.: …………………......... Extension No. : ………………….........

1. Manufacturer's name or trade mark (s) of the tyre: .......................................................

2. Tyre type designation by the manufacturer: ..................................................................

3. Manufacturer's name and address: ................................................................................

4. If applicable, name and address of manufacturer's representative: ..............................

......................................................................................................................................

5. Summarized description: ..............................................................................................

5.1. Size of tyre: ...................................................................................................................

5.2. Category of use: ............................................................................................................

5.3. Structure: diagonal (bias-ply)/bias belted/radial2

5.4. Speed category symbol: ................................................................................................

5.5. Load-capacity index: .....................................................................................................

1
Distinguishing number of the country which has granted/extended/refused/withdrawn approval (see
approval provisions in the Regulation).
2
Strike out what does not apply.

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Annex 1

5.5.1. For traction (implement only): ......................................................................................

5.5.2. For trailer (implement only): .........................................................................................

5.6. Whether the tyre is to be fitted with or without an inner tube .......................................

......................................................................................................................................

5.7. The supplementary service description, if applicable: ..................................................

......................................................................................................................................

6. Technical Service and, where applicable, test laboratory approved for purposes
of approval or of verification of conformity: ................................................................

7. Date of report issued by that Service: ...........................................................................

8. Number of report issued by that Service: .....................................................................

9. Reason(s) of extension (if applicable): .........................................................................

10. Any remarks: .................................................................................................................

......................................................................................................................................

11. Place:.............................................................................................................................

12. Date: ..............................................................................................................................

13. Signature: ......................................................................................................................

14. Annexed to this communication is a list of documents in the approval file deposited
at the Type Approval Authorities having delivered the approval and which can be
obtained upon request

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Annex 2

Annex 2

Arrangement of approval mark

a = 12 mm min

The above approval mark affixed to a pneumatic tyre shows that the type of tyre
concerned has been approved in the Netherlands (E 4) pursuant to Regulation No. 106
under approval number 002439. The first two digits of the approval number indicate that
the approval was granted in accordance with the requirements of Regulation No. 106 in its
original form.
Note: The approval number must be placed close to the circle and either above or below
the "E" or to the left or right of that letter. The digits of the approval number must be on
the same side of the "E" and face in the same direction. The use of Roman numerals as
approval numbers should be avoided so as to prevent any confusion with other symbols.

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Annex 3

Annex 3

Arrangement of tyre markings

(See paragraphs 3.1. and 3.2. of this Regulation)
Part A: Drive wheel tyres for agricultural tractors
Example of the markings to be borne by types of tyres complying with this Regulation

Minimum heights of markings (mm)

Tyres of rim diameter code
Tyres of nominal section width
Up to 12 13 to 19.5 20 and above

up to 130 b=4 b=6 b=9

c=4 c=4 c=4
135 to 235 b=6 b=6 b=9
c=4 c=4 c=4
240 and above b=9 b=9 b=9
c=4 c=4 c=4

These markings define a drive wheel tyre:

(a) Having a nominal section width of 360;
(b) Having a nominal aspect ratio of 70;
(c) Of radial ply structure (R);
(d) Having a nominal rim diameter of 610 for which the code is 24;
(e) Having a load capacity of 1250 kg, corresponding to load index 116 in
Annex 4;
(f) Classified in the speed category A8 (reference speed 40 km/h);
(g) Allowed to be used additionally at 50 km/h (speed category symbol B)
with a load, capacity of 1150 kg corresponding to the load capacity
index 113 shown in Annex 4;
(h) For fitting without an inner tube ("tubeless");
(i) Having a special tread ("R-2");
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(j) Manufactured during the twenty-fifth week of the year 2006 (see
paragraph 3.2. of this Regulation).
The positioning and order of the markings constituting the tyre designation
are as follows:
(a) The size designation, comprising the prefix (if any), the nominal
section width, the nominal aspect ratio, the type-of-structure symbol
(where applicable) and the nominal rim diameter, must be grouped as
shown in the examples:
360/70 R 24, IF 360/70 R 24, VF 360/70 R 24, IF 800/65 R 32 CFO,
800/70 R 24 CHO;
(b) The service description (load index and the speed category symbol) is
placed near the size designation. It may either precede or follow it or
be placed above or below it;
(c) The symbols "TUBELESS", "R-2" or "DEEP", the optional word
"RADIAL" and the date of production may be at a distance from the
size designation;
(d) The marking of the additional service description inside the circle may
show either the speed category symbol after or below the load index.
Part B: Steering wheel tyres for agricultural and forestry tractors
Example of the markings to be borne by types of tyres complying with this Regulation

Minimum heights of markings (mm)

Tyres of rim diameter code

Tyres of nominal section width
Up to 12 13 to 19.5 20 and above

up to 130 b=4 b=6 b=9

c=4 c=4 c=4
135 to 235 b=6 b=6 b=9
c=4 c=4 c=4
240 and above b=9 b=9 b=9
c=4 c=4 c=4

These markings define a steering wheel tyre:

(a) Having a nominal section width of 250;
(b) Having a nominal aspect ratio of 70;
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Annex 3

(c) Of radial-ply structure (R);

(d) Having a nominal rim diameter of 405 mm, for which the code is 16,
designed for the equipment of non-driven steering axles of agricultural
tractors (FRONT);
(e) Having load capacities of 925 kg, corresponding to the load capacity
index 105 shown in Annex 4;
(f) Classified in the nominal speed category A6 (reference speed
30 km/h);
(g) For fitting without an inner tube "tubeless"; and
(h) Manufactured during the twenty-fifth week of the year 2006 (see
paragraph 3.2. of this Regulation).
The positioning and order of the markings constituting the tyre designation
are as follows:
(a) The size designation, comprising the nominal section width, the
nominal aspect ratio, the type-of-structure symbol (where applicable),
the nominal rim diameter and, optionally the letters "FRONT", must
be grouped as shown in the above example: 250/70 R 16 FRONT;
(b) The service description (the load index and the speed category
symbol) is placed together near the size designation. It may either
precede or follow it or be placed above or below it;
(c) The symbol "TUBELESS", the optional word "RADIAL", the
optional symbol "F-1", and the date of manufacture may be at a
distance from the size designation.
Part C: Implement tyres
Example of the markings to be borne by types of tyres complying with this Regulation

Minimum heights of markings (mm)

Tyres of nominal section width Tyres of rim diameter code

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Annex 3

Up to 12 13 to 19.5 20 and above

up to 130 b=4 b=6 b=9

c=4 c=4 c=4
d=7 d = 12 d = 12
135 to 235 b=6 b=6 b=9
c=4 c=4 c=4
d = 12 d = 12 d = 12
240 and above b=9 b=9 b=9
c=4 c=4 c=4
d = 12 d = 12 d = 12

These markings define an implement tyre:

(a) Having a nominal section width of 250;
(b) Having a nominal aspect ratio of 70;
(c) Of radial-ply structure (R);
(d) Having a nominal rim diameter of 508 mm, for which the code is 20;
(e) Designed primarily for the equipment of implements, agricultural
machinery or agricultural trailers (IMP);
(f) Having load capacities of 690 kg corresponding to the load capacity
index 95 shown in Annex 4 when used on driven axles (traction
application), as identified by the appropriate symbol;
(g) Having load capacities of 1,000 kg when used on non-driven axles
(trailer application) corresponding to the load capacity index 108
shown in Annex 4, as identified by the appropriate symbol;
(h) Both applications being classified in the nominal speed category A6
(reference speed 30 km/h);
(i) For fitting without an inner tube "tubeless"; and
(j) Manufactured during the twenty-fifth week of the year 2006 (see
paragraph 3.2. of the Regulation).
The positioning and order of the markings constituting the tyre designation
are as follows:
(a) The size designation, comprising the nominal section width, the
nominal aspect ratio, the type-of-structure symbol (where applicable),
the nominal rim diameter and optionally the letters 'IMP' must be
grouped as shown in the above example: 250/70 R 20 IMP;
(b) The service description (the load index and the speed category
symbol) and the relevant type of application symbol are placed
together near the size designation. They may either precede or follow
it or be placed above or below it;
(c) The symbol "TUBELESS", I-3 if any, the optional word "RADIAL",
the optional word "IMPLEMENT" and the date of manufacture may
be at a distance from the size designation.
Part D: Tyres for forestry machines
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Annex 3

Example of the markings to be borne by types of tyres complying with this Regulation

↓ ↓ ↓
600/55 – 26.5 b LS-2 b 154 A8 b
↑ ↑ ↑
↓ ↓
TUBELESS c 2506 c
↑ ↑
Minimum heights of markings: b: 9 mm c: 4 mm
These markings define a tyre for forestry machines (LS):
(a) Having a nominal section width of 600;
(b) Having a nominal aspect ratio of 55;
(c) Of diagonal ply structure (-);
(d) Having a nominal rim diameter of 673 mm for which the code is
26.5;
(e) Having an intermediate tread ("LS-2");
(f) Having a load capacity of 3750 kg, corresponding to load index 154 in
Annex 4;
(g) Classified in the speed category A8 (reference speed 40 km/h);
(h) For fitting without an inner tube ("tubeless");
(i) Manufactured during the twenty-fifth week of the year 2006 (see
paragraph 3.2. of this Regulation).
The positioning and order of the markings constituting the tyre designation
are as follows:
(a) The size designation, comprising the nominal section width, the
nominal aspect ratio, the type of structure symbol (where applicable)
and the nominal rim diameter, must be grouped as shown in the above
example: 600/55 – 26.5;
(b) The inscription "LS", followed by the number 1, 2, 3 or 4 as
appropriate, is placed after the size designation, as shown in the above
example: LS-2;
(c) The service description (load index and the speed category symbol) is
placed near the size designation. It may either precede or follow it or
be placed above or below it;
(d) The symbols "TUBELESS" and the date of production may be at a
distance from the size designation.

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Annex 4

Annex 4

List of load capacity indices (LI) and corresponding

maximum mass to be carried (kg)
(See paragraph 2.28. of this Regulation)
LI kg LI kg LI kg LI kg
1 46,2 51 195 101 825 151 3 450
2 47,5 52 200 102 850 152 3 550
3 48,7 53 206 103 875 153 3 650
4 50 54 212 104 900 154 3 750
5 51,5 55 218 105 925 155 3 875
6 53 56 224 106 950 156 4 000
7 54,5 57 230 107 975 157 4 125
8 56 58 236 108 1 000 158 4 250
9 58 59 243 109 1 030 159 4 375
10 60 60 250 110 1 060 160 4 500
11 61,5 61 257 111 1 090 161 4 625
12 63 62 265 112 1 120 162 4 750
13 65 63 272 113 1 150 163 4 875
14 67 64 280 114 1 180 164 5 000
15 69 65 290 115 1 215 165 5 150
16 71 66 300 116 1 250 166 5 300
17 73 67 307 117 1 285 167 5 450
18 75 68 315 118 1 320 168 5 600
19 77,5 69 325 119 1 360 169 5 800
20 80 70 335 120 1 400 170 6 000
21 82,5 71 345 121 1 450 171 6 150
22 85 72 355 122 1 500 172 6 300
23 87,5 73 365 123 1 550 173 6 500
24 90 74 375 124 1 600 174 6 700
25 92,5 75 387 125 1 650 175 6 900
26 95 76 400 126 1 700 176 7 100
27 97,5 77 412 127 1 750 177 7 300
28 100 78 425 128 1 800 178 7 500
29 103 79 437 129 1 850 179 7 750
30 106 80 450 130 1 900 180 8 000
31 109 81 462 131 1 950 181 8 250
32 112 82 475 132 2 000 182 8 500
33 115 83 487 133 2 060 183 8 750
34 118 84 500 134 2 120 184 9 000
35 121 85 515 135 2 180 185 9 250
36 125 86 530 136 2 240 186 9 500
37 128 87 545 137 2 300 187 9 750
38 132 88 560 138 2 360 188 10 000
39 136 89 580 139 2 430 189 10 300
40 140 90 600 140 2 500 190 10 600
41 145 91 615 141 2 575 191 10 900
42 150 92 630 142 2 650 192 11 200
43 155 93 650 143 2 725 193 11 500
44 160 94 670 144 2 800 194 11 800
45 165 95 690 145 2 900 195 12 150
46 170 96 710 146 3 000 196 12 500
47 175 97 730 147 3 075 197 12 850
48 180 98 750 148 3 150 198 13 200
49 185 99 775 149 3 250 199 13 600
50 190 100 800 150 3 350 200 14 000

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Annex 5

Annex 5

Theoretical rim, outer diameter and nominal section width of

tyres of certain size designations
Table 1 (1 of 2)
Agricultural steering wheels - Normal and low Section sizes
Overall
Tyre size Theoretical rim Nominal width Nominal width
diameter (D)
designation width code (A1) (S1) (mm) (d) (mm)
(mm)
4.00 - 9 3 112 460 229
4.00 - 12 3 112 535 305
4.00 - 15 3 112 610 381
4.00 - 16 3 112 630 406
4.00 - 19 3 112 712 483
4.50 - 10 3 121 505 254
4.50 - 16 3 122 655 406
4.50 - 19 3 122 736 483
5.00 - 10 3 130 530 254
5.00 - 12 3 130 580 305
5.00 - 15 4 140 655 381
5.00 - 16 4 140 680 406
5.50 - 16 4 150 710 406
6.00 - 14 5 169 688 356
6.00 - 16 4,5 165 735 406
6.00 - 18 4 160 790 457
6.00 - 19 4,5 165 814 483
6.00 - 20 4,5 165 840 508
6.50 - 10 4,5 175 608 254
6.50 - 16 4,5 175 760 406
6.50 - 20 4,5 175 865 508
7.50 - 16 5,5 205 805 406
7.50 - 18 5,5 205 860 457
7.50 - 20 5,5 205 915 508
8.00 - 16 5,5 211 813 406
9.00 - 16 6 234 855 406
9.50 - 20 7 254 978 508
10.00 - 16 8 274 895 406
11.00 - 16 10 315 965 406
11.00 - 24 10 315 1 170 610

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Table 1 (2 of 2)
Agricultural steering wheels - Normal and low section sizes
Overall
Tyre size Theoretical rim Nominal width Nominal width
diameter (D)
designation width code (A1) (S1) (mm) (d) (mm)
(mm)
Low Section
7.5L - 15 6 210 745 381
8.25/85 - 15 6 210 745 381
9.5L - 15 8 240 785 381
9.5/85 - 15 8 240 785 381
11L - 15 8 280 815 381
11.5/75 - 15 8 280 815 381
7.5L - 16 6 208 746 406
11L - 16 8 279 840 406
14L - 16.1 11 360 985 409
14.0/80 - 16.1 11 360 985 409
14.5/75 - 16.1 11 373 940 409
16.5L - 16.1 14 419 1 072 409

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Annex 5

Table 2 (1 of 5)
Drive wheel tyres for agricultural tractors - Normal section sizes
Nominal section Overall diameter (D) Nominal rim
Tyre size Theoretical rim width (S1) (mm) (mm) diameter (d)
designation width code (A1) (mm)
Radial Diagonal Radial Diagonal
4.00-7 3 112 410 178
4.00-8 3 112 435 203
4.00-9 3 112 460 229
4.00-10 3 112 485 254
4.00-12 3 112 535 305
4.00-18 3 112 690 457
4.50-10 3 121 505 254
5.0 -10 4 135 505 254
5.00-10 3 130 530 254
5.00-12 4 145 580 305
5.00-15 4 145 645 381
6.00-12 4 160 635 305
6.00-16 4 160 735 406
6.5-15 5 167 685 381
6.50-16 5 175 760 406
7.50-18 5,5 205 860 457
8.00-20 6 220 965 508
5-12 4 127 545 305
5-14 4 127 595 356
5-26 4 127 900 660
6-10 5 157 550 254
6-12 5 157 600 305
6-14 5 157 650 356
7-14 5 173 690 356
7-16 6 183 740 406
8-16 6 201 790 406
8-18 7 211 840 457
7.2-20 6 183 845 508
7.2-24 6 183 945 610
7.2-30 6 183 1 095 762
7.2-36 6 183 1 250 914
7.2-40 6 183 1 350 1 016
8.3-16 7 211 790 406

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Annex 5

Table 2 (2 of 5)
Drive wheel tyres for agricultural tractors - Normal section sizes
Nominal section Overall diameter (D) Nominal rim
Tyre size Theoretical rim width (S1) (mm) (mm) diameter (d)
designation width code (A1)
Radial Diagonal Radial Diagonal (mm)
8.3-20 7 211 890 508
8.3-22 7 211 940 559
8.3-24 7 211 211 985 995 610
8.3-26 7 211 1 045 660
8.3-28 7 211 1 095 711
8.3-32 7 211 211 1 190 1 195 813
8.3-36 7 211 211 1 290 1 300 914
8.3-38 7 211 1 350 965
8.3-42 7 211 211 1 440 1 450 1 067
8.3-44 7 211 211 1 495 1 500 1 118
9.5-16 8 241 845 406
9.5-18 8 241 895 457
9.5-20 8 241 241 940 945 508
9.5-22 8 241 995 559
9.5-24 8 241 241 1 040 1 050 610
9.5-26 8 241 1 100 660
9.5-28 8 241 1 140 711
9.5-32 8 241 1 250 813
9.5-36 8 241 241 1 345 1 355 914
9.5-38 8 241 1 405 965
9.5-42 8 241 1 505 1 067
9.5-44 8 241 241 1 550 1 555 1 118
9.5-48 8 241 241 1 650 1 655 1 219

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Table 2 (3 of 5)
Drive wheel tyres for agricultural tractors - Normal section sizes
Nominal section Overall diameter (D) Nominal rim
Tyre size Theoretical rim width (S1) (mm) (mm) diameter (d)
designation width code (A1)
Radial Diagonal Radial Diagonal (mm)
11.2-18 10 284 955 457
11.2-20 10 284 284 995 1 005 508
11.2-24 10 284 284 1 095 1 105 610
11.2-26 10 284 1 155 660
11.2-28 10 284 284 1 200 1 205 711
11.2-36 10 284 284 1 400 1 410 914
11.2-38 10 284 284 1 455 1 460 965
11.2-42 10 284 1 555 1 067
11.2-44 10 284 1 610 1 118
11.2-48 10 284 1 710 1 219
12.4-16 11 315 956 406
12.4-20 11 315 1 045 508
12.4-24 11 315 315 1 145 1 160 610
12.4-26 11 315 1 210 660
12.4-28 11 315 315 1 250 1 260 711
12.4-30 11 315 1 310 762
12.4-32 11 315 315 1 350 1 360 813
12.4-36 11 315 315 1 450 1 465 914
12.4-38 11 315 315 1 500 1 515 965
12.4-42 11 315 1 615 1 067
12.4-46 11 315 1 705 1 168
12.4-52 11 315 1 860 1 321
13.6-16 12 345 1 005 406
13.6-24 12 345 345 1 190 1 210 610
13.6-26 12 345 345 1 260 1 260 660
13.6-28 12 345 345 1 295 1 310 711
13.6-36 12 345 345 1 500 1 515 914
13.6-38 12 345 345 1 550 1 565 965
13.6-48 12 345 1 805 1 219
13.9-36 12 353 1 478 965
14.9/80-24 12 368 1 215 610
14.9-20 13 378 1 165 508
14.9-24 13 378 378 1 245 1 265 610
14.9-26 13 378 378 1 295 1 315 660
14.9-28 13 378 378 1 350 1 365 711
14.9-30 13 378 378 1 400 1 415 762

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Table 2 (4 of 5)
Drive wheel tyres for agricultural tractors - Normal section sizes
Nominal section Overall diameter (D) Nominal rim
Tyre size Theoretical rim width (S1) (mm) (mm) diameter (d)
designation width code (A1)
Radial Diagonal Radial Diagonal (mm)
14.9-38 13 378 378 1 600 1 615 965
14.9-46 13 378 1 824 1 168
15.5-38 14 394 394 1 565 1 570 965
16.9-24 15 429 429 1 320 1 335 610
16.9-26 15 429 429 1 370 1 385 660
16.9-28 15 429 429 1 420 1 435 711
16.9-30 15 429 429 1 475 1 485 762
16.9-34 15 429 429 1 575 1 585 864
16.9-38 15 429 429 1 675 1 690 965
16.9-42 15 429 1 775 1 067
18.4-16.1 16 467 1 137 409
18.4-24 16 467 467 1 395 1 400 610
18.4-26 16 467 467 1 440 1 450 660
18.4-28 16 467 467 1 490 1 501 711
18.4-30 16 467 467 1 545 1 550 762
18.4-34 16 467 467 1 645 1 650 864
18.4-38 16 467 467 1 750 1 750 965
18.4-42 16 467 467 1 850 1 850 1 067
18.4-46 16 467 1 958 1 168

31
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E/ECE/TRANS/505/Rev.2/Add.105/Rev.2
Annex 5

Table 2 (5 of 5)
Drive wheel tyres for agricultural tractors - Normal and low section sizes

Nominal section Overall diameter (D) Nominal rim

Tyre size Theoretical rim width width (S1) (mm) (mm) diameter (d)
designation code (A1)
Radial Diagonal Radial Diagonal (mm)
20.8-34 18 528 528 1 735 1 735 864
20.8-38 18 528 528 1 835 1 835 965
20.8-42 18 528 528 1 935 1 935 1 067
23.1-26 20 587 587 1 605 1 605 660
23.1-30 20 587 587 1 700 1 705 762
23.1-34 20 587 587 1 800 1 805 864
24.5-32 21 622 622 1 800 1 805 813
Low section height
7.5L-15 6 210 745 381
14.9LR-20 13 378 1 100 508
17.5L-24 15 445 445 1 241 1 265 610
19.5L-24 17 495 495 1 314 1 339 610
21L-24 18 533 1 402 610
28.1-26 25 714 1 615 660
28L-26 25 719 714 1 607 1 615 660
30.5L-32 27 775 775 1 820 1 820 813

Notes:
1. The Tyre size designation may be supplemented by an additional figure: ex: 23.1/18 26 instead of 23.1 - 26.
2. Tyres of radial structure are identified by means of the letter "R" in place of " - " (e.g. 23.1R26).
3. Coefficient for the calculation of the overall width: +8 per cent.

32
E/ECE/324/Rev.2/Add.105/Rev.2
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2
Annex 5

Table 3
Drive wheel tyres for agricultural tractors - Low section series
Nominal rim
Tyre size Theoretical rim Nominal section Overall diameter
diameter (d)
designation width code (A1) width (S1) (mm) (D) (mm)
(mm)
11.2/78-28 10 296 1 180 711
12.4/78-28 11 327 1 240 711
12.4/78-36 11 327 1 440 914
13.6/78-28 12 367 1 285 711
13.6/78-36 12 367 1 490 914
14.9/78-28 13 400 1 345 711
16.9/78-28 15 452 1 410 711
16.9/78-30 15 452 1 460 762
16.9/78-34 15 452 1 560 864
16.9/78-38 15 452 1 665 965
18.4/78-30 16 490 1 525 762
18.4/78-38 16 490 1 730 965

33
E/ECE/324/Rev.2/Add.105/Rev.2
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2
Annex 5

Table 4
Drive wheel tyres for agricultural tractors - Low section series
Nominal rim
Tyre size Theoretical rim Nominal section Overall diameter
diameter (d)
designation width code (A1) width (S1) (mm) (D) (mm)
(mm)

300/70R20 9 295 952 508

34
E/ECE/324/Rev.2/Add.105/Rev.2
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2
Annex 5

Table 5 (1 of 3)
Agricultural implement tyres - Normal section sizes
Nominal rim
Nominal Overall diameter (D) (mm) diameter (d)
Theoretical
Tyre size section (mm)
rim width
designation width (S1)
code (A1)
(mm) (*)

125 - 15 IMP 3,5 127 590 381

140 - 6 IMP 4,5 135 315 152
165 - 15 IMP 4,5 167 650 381
190-8 IMP 5.50 182 430 203
2.50 - 4 IMP 1,75 68 225 102
2.75 - 4 IMP 1,75 70 234 102
2.50 - 8 IMP 1,5 68 338 203
3.00 - 4 IMP 2,5 90 265 102
3.00 - 8 IMP 2,5 90 367 203
3.00 - 10 IMP 2,5 90 418 254
3.25 - 8 IMP 2,10 84 366 203
3.25 - 16 IMP 1,85 88 590 406
3.50 - 5 IMP 3 95 292 127
3.50 - 6 IMP 2,5 100 343 152
3.50 - 8 IMP 2,5 100 393 203
3.50 - 16 IMP 1,85 92 590 406
4.00 - 4 IMP 3 114 313 102
4.00 - 5 IMP 3 102 310 127
4.00 - 6 IMP 3 114 374 152
4.00 – 8 IMP 3 112 418 425 203
4.00 – 9 IMP 3 112 443 460 229
4.0 – 10 IMP 3 114 455 465 254
4.00 – 10 IMP 3 114 465 475 254
4.00 – 12 IMP 3 112 519 536 305
4.00 – 15 IMP 3 112 595 612 381
4.00 - 16 IMP 3 114 618 406
4.00 – 18 IMP 3 112 672 688 457
4.50 – 19 IMP 3 124 720 733 483
4.00 - 21 IMP 3 112 765 533
4.00/4.50 - 21 IMP 3 110 765 533
4.10 - 4 IMP 3,25 102 268 102
4.10 - 6 IMP 3,25 102 319 152
4.10/3.50-4 IMP 2.10 89 272 101
4.50 - 9 IMP 3 124 466 229
4.50 - 14 IMP 3 124 593 356
4.50 - 16 IMP 3 123 647 406
4.50 - 19 IMP 3 124 720 483
4.80 – 8 IMP 3,75 121 423 449 203
5.00 - 8 IMP 4 145 467 203

35
E/ECE/324/Rev.2/Add.105/Rev.2
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2
Annex 5

Table 5 (2 of 3)
Agricultural implement tyres - Normal section sizes
Tyre size Theoretical rim Nominal section Overall diameter (D) (mm) Nominal rim
designation width code (A1) width (S1) (mm) diameter (d)
(*) (mm)
5.00 - 9 IMP 3,5 141 497 229
5.0 – 10 IMP 4 145 505 517 254
5.0 - 12 IMP 4 145 566 305
5.00 – 12 IMP 4 145 567 580 305
5.00 – 14 IMP 4 145 618 631 356
5.0 - 15 IMP 4 145 642 381
5.00 – 15 IMP 3 130 639 655 381
5.00 - 16 IMP 4 145 669 406
5.00/5.25 - 21 IMP 3 136 824 533
5.50 – 16 IMP 4 150 685 703 406
5.70 - 12 IMP 4,5 146 570 305
5.70 - 15 IMP 4,5 146 647 381
5.90 – 15 IMP 4 150 665 681 381
6 - 6 IMP 4 145 425 152
6.00 - 9 IMP 4,5 169 543 556 229
6 - 12 IMP 5 145 585 305
6.0 - 12 IMP 5 155 569 305
6.00 - 12 IMP 5 152 579 305
6.00 – 16 IMP 4 158 712 729 406
6.00 - 20 IMP 4,5 169 830 508
6.40 - 15 IMP 4,5 163 684 381
6.5 - 15 IMP 5 163 674 381
6.50 - 10 IMP 5 178 597 254
6.50 – 16 IMP 4,5 173 735 754 406
6.50 - 20 IMP 5 176 850 508
6.70 – 15 IMP 4,5 182 704 720 381
6.90 - 9 IMP 5,5 175 545 229
7.00- 12 IMP 5 187 667 685 305
7.00 - 14 IMP 5 170 691 356
7.00 - 15 IMP 5,5 200 744 381
7.00 - 16 IMP 5,5 200 769 406
7.00 - 18 IMP 5,5 200 820 457
7.00 - 19 IMP 5,5 200 845 483
7.50 – 10 IMP 6 214 634 649 254
7.50 - 14 IMP 5,5 194 686 356
7.50 - 15 IMP 6 215 808 381
7.50 – 16 IMP 5,5 202 785 801 406
7.50 – 18 IMP 5,5 202 836 852 457

36
E/ECE/324/Rev.2/Add.105/Rev.2
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2
Annex 5

Table 5 (3 of 3)
Agricultural implement tyres - Normal section sizes
Tyre size Theoretical rim Nominal section Overall diameter (D) (mm) Nominal rim
designation width code (A1) width (S1) (mm) diameter (d)
(mm)
(*)

7.50 – 20 IMP 5,5 202 887 903 508

7.50 – 24 IMP 5,5 202 989 1013 610
7.60 – 15 IMP 5,5 193 734 751 381
8 - 16 IMP 6 211 795 406
8.00 - 12 IMP 5 214 710 305
8.00 - 19 IMP 6 214 888 483
8.00 - 20 IMP 6 214 945 508
8.25 - 15 IMP 6,5 237 835 381
8.25 - 16 IMP 6 229 832 406
8.25 - 20 IMP 6 229 934 508
9.00 - 10 IMP 6 234 696 254
9.00 - 13 IMP 5,5 247 814 330
9.00 - 15 IMP 5,5 247 850 381
9.00 - 16 IMP 6 234 848 406
9.00 - 24 IMP 8 272 1 094 610
10.00 - 12 IMP 6,5 262 790 305
10.00 - 15 IMP 8 274 853 381
10.00 - 16 IMP 8 274 895 406
10.50 - 16 IMP 6,5 280 955 406
11.00 - 12 IMP 6,5 277 835 305
11.00 - 16 IMP 6,5 277 937 406
11.0 - 20 IMP 9 285 950 508
11.25 - 24 IMP 10 325 1 171 610
11.25 - 28 IMP 10 325 1 273 711
11.5 - 24 IMP 10 305 1 070 610
13.50 – 16.1 IMP 11 353 1021 1043 409
14.0 - 24 IMP 12 370 1 170 610
15.0 - 24 IMP 13 400 1 210 610
15.0 - 28 IMP 13 400 1 310 711
17.0 - 28 IMP 15 455 1 390 711
17.0 - 30 IMP 15 455 1 440 762
18.5 - 34 IMP 16 490 1 600 864
20 - 20 IMP 14 520 1 270 508

Notes:
1. The suffix "IMP" may be replaced by the wording "IMPLEMENT" on the tyre sidewall.
2. Tyres of radial structure are identified by means of the letter "R" in place of "-" (e.g. 7.5 L R 15).
3. Overall diameters (D) in column (*) apply to tyres marked with classification code "I-3" – see
paragraph 3.1.8.2. of this Regulation.

37
E/ECE/324/Rev.2/Add.105/Rev.2
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2
Annex 5

Table 6 (1 of 3)
Agricultural implement tyres - Low section sizes

Nominal Overall
Theoretical diameter (D) Nominal rim
Tyre size section
rim width (mm) diameter (d)
designation width (S1)
code (A1) (mm)
(mm) (*)
7.5 L - 15 IMP 6 210 745 381
8.5L – 14 IMP 6 216 721 735 356
9.5L – 14 IMP 7 241 741 757 356
9.5L – 15 IMP 7 241 767 782 381
11L – 14 IMP 8 279 752 770 356
11L – 15 IMP 8 279 777 796 381
11L – 16 IMP 8 279 803 821 406
12.5L – 15 IMP 10 318 823 845 381
12.5L – 16 IMP 10 318 848 870 406
14L - 16.1 IMP 11 356 940 409
16.5L – 16.1 IMP 14 419 1024 1046 409
19 L - 16.1 IMP 16 483 1 087 409
21.5 L - 16.1 IMP 18 546 1 130 409

Notes:
1. The suffix "IMP" may be replaced by the wording "IMPLEMENT" on the Tyre sidewall.
2. Tyres of radial structure are identified by means of the letter "R" in place of " - " (e.g. 7.5 LR 15).

38
E/ECE/324/Rev.2/Add.105/Rev.2
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2
Annex 5

Table 6 (2 of 3)
Agricultural implement tyres - Low section sizes
Overall
Theoretical Nominal section diameter (D) Nominal rim
Tyre size
rim width width (S1) (mm) diameter (d)
designation
code (A1) (mm) (mm)
(*)

205/50 - 10 IMP 7 211 450 254

19.0/45 - 17 IMP 16 491 866 432
15.0/55 - 17 IMP 13 391 850 872 432
10.5/65 - 16 IMP 9 274 755 40
11.0/60 - 16 IMP 9 281 742 406
11.0/65 - 12 IMP 9 281 670 692 305
13.0/65 - 18 IMP 11 336 890 457
13.0/70 - 16 IMP 11 337 890 406
14.0/65 - 16 IMP 11 353 870 406
9.0/70 - 16 IMP 7 226 725 406
11.5/70 - 16 IMP 9 290 815 406
11.5/70 - 18 IMP 9 290 865 457
15.0/70 - 18 IMP 13 391 990 457
16.0/70 - 20 IMP 14 418 1075 1097 508
16.5/70 - 22.5 MP 13 417 1 158 572
20.0/70 - 508 IMP 16 508 1 220 508
8.0/75 - 15 IMP 6,5 199 710 381
9.0/75 – 16 IMP 7 226 749 770 406
10.0/75 - 12 IMP 9 264 685 305
10.0/75 - 15.3 IMP 9 264 760 780 389
10.0/75 - 15.3 IMP 9 264 760 389
10.0/75 - 16 IMP 9 264 805 406
12.0/75 - 18 IMP 9 299 915 937 457
13.0/75 - 16 IMP 11 336 900 406
13.5/75 - 430.9 MP 11 345 945 431
14.5/75 - 20 IMP 12 372 1 060 508
6.5/80 – 12 IMP 5 163 569 588 305
6.5/80 – 15 IMP 5 163 645 663 381
8.50 - 12 IMP 7 235 715 305
10.0/80 – 12 IMP 9 264 710 730 305
10 - 18 IMP 9 260 875 457
10.5/80 – 18 IMP 9 274 885 907 457
11.5/80 – 15.3 IMP 9 290 845 867 389
11.5/80 - 15.3 IMP 9 290 845 389
12.5/80 - 15.3 IMP 9 307 889 389
12.5/80 - 18 IMP 9 308 965 987 457
14.5/80 - 18 IMP 12 372 1060 1082 457

39
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E/ECE/TRANS/505/Rev.2/Add.105/Rev.2
Annex 5

Table 6 (3 of 3)
Agricultural implement tyres - Low section sizes
Tyre size Theoretical Nominal Overall Nominal rim
designation rim width section diameter (D) diameter (d)
code (A1) width (S1) (mm) (mm)
(mm) (*)

15.5/80 - 24 IMP 13 394 1240 1262 610

17.0/80 - 508 IMP 13 426 1200 508
19.5/80 - 20 IMP 16 499 1300 508
21.0/80 - 20 IMP 16 525 1362 508
5.5/85 - 9 IMP 4 145 475 229
10.5/85 - 15.3 IMP 9 274 792 389
13.5/85 - 28 IMP 11 345 1293 711
16.5/85 - 24 IMP 13 417 1322 1344 610
16.5/85 - 28 IMP 13 417 1423 1445 711
Notes:
1. The suffix "IMP" may be replaced by the wording "IMPLEMENT" on the Tyre sidewall.
2. Tyres of radial structure are identified by means of the letter "R" in place of " - " (e.g. 205/50R10).
3. Overall diameters (D) in column (*) apply to tyres marked with classification code "I-3" – see
paragraph 3.1.8.2. of this Regulation.

40
E/ECE/324/Rev.2/Add.105/Rev.2
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2
Annex 5

Table 7 (1 of 4)
Agricultural high flotation tyres
Theoretical Nominal section Overall Nominal rim
Tyre size
rim width width (S1) diameter (D) diameter (d)
designation
code (A1) (mm) (mm) (mm)
9x3.50 - 4 2,75 91 229 101
11x4.00 - 4 3,25 102 280 101
11x4.00 - 5 3 104 272 127
11x7 - 4 6 185 270 101
12x4.00 - 5 3 112 298 127
13x5.00 - 6 3,5 122 320 152
13x6.00-6 5 154 330 152
13x6.00 - 8 5 154 330 203
13x6.50 - 6 5 163 330 152
14x4.50-6 3,5 113 356 152
14x5.00 - 6 4 127 347 152
14x6.00 - 6 4,5 157 340 152
15x6.00 - 6 4,5 155 366 152
16x4.50 - 9 3 105 405 229
16x5.50 - 8 4,25 142 414 203
16x6.50 - 8 5,375 165 405 203
16x7.50 - 8 5,375 188 411 203
17x8.00 - 8 7 203 438 203
17x8.00 - 12 7 203 432 305
18x6.50 - 8 5 163 457 203
18x7.00 - 8 5,5 178 450 203
18x7.50-8 6 191 457 203
18x8.50 - 8 7 214 450 203
18x9.50 - 8 7 235 462 203
19x9.50-8 7,5 240 483 203
19x7.50 - 8 5,5 180 480 203
19x8.00 - 10 7 203 483 254
19x10.00 - 8 8,5 254 483 203
20x8.00-8 6,5 204 508 203
20x8.00 - 10 7 203 500 254
20x9.00-8 7 227 508 203
20x10.00 - 8 8 254 508 203
20x10.00 - 10 8,5 254 508 254
20.5x8.00 - 10 6 208 526 254
21x7.00-10 5,5 177 533 254
21x8.00 - 10 7 203 525 254
AT21x7 - 10 5,5 177 533 254
21x11.00 - 8 8,5 282 518 203
21x11.00 - 10 9 279 525 254
22x8.00 - 10 6 196 556 254
22x8.50 - 12 7 216 551 305
AT22x9 - 8 7 227 559 203
22x10.00 - 8 7 244 572 203
22x10.00 - 10 8,5 254 559 254

41
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E/ECE/TRANS/505/Rev.2/Add.105/Rev.2
Annex 5

Table 7 (2 of 4)
Agricultural high flotation tyres
Tyre size Theoretical Nominal section Overall Nominal rim
designation rim width width (S1) diameter (D) diameter (d)
code (A1) (mm) (mm) (mm)
22x11.00 - 8 8,5 284 546 203
22x11.00 - 10 8,5 254 559 254
AT23x7 - 10 5,5 175 587 254
AT23x8 - 11 6,5 204 584 279
23x8.50 - 12 7 214 575 305
23x9.00 - 12 7,5 229 575 305
23x9.50-12 7 235 577 305
23x10.50 - 12 8,5 264 579 305
AT24x8 - 11 6,5 204 610 279
AT24x9 - 11 7 227 610 279
AT24x10 - 11 8 254 610 279
24x8.50 - 12 7 213 602 305
24x8.50 - 14 7 213 602 356
24x11.00 - 10 8,5 254 607 254
24x12.00-12 9,5 304 610 305
24x13.00 - 12 10,5 325 592 305
25x7.50 - 15 5,5 191 640 381
AT25x8 - 12 6,5 204 635 305
25x8.00-12 6,5 203 635 305
25x8.50 - 14 7 213 645 356
25x10.00-12 8 254 635 305
25x10.50 - 15 8 267 640 381
25x11.00-12 9 279 635 305
AT25x11 - 9 9 281 635 229
AT25x11 - 10 8,5 262 645 254

42
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E/ECE/TRANS/505/Rev.2/Add.105/Rev.2
Annex 5

Table 7 (3 of 4)
Agricultural high flotation tyres
T Theoretical Nominal section Overall Nominal rim
Tyre size
adesignation rim width width (S1) diameter (D) diameter (d)
b code (A1) (mm) (mm) (mm)
l25x12.00 - 9 10 305 635 229
e
25x12.50 - 15 10 310 640 381
726x10.00 - 12 10 310 660 305
26x12.00 - 12 10 310 660 305
(
426x14.00 - 12 12 356 660 305
27x8.50 - 15 7 214 680 381
o
27x9.50 - 15 7 229 686 381
f
27x10.50 - 15 8,5 259 691 381
427x10 - 15.3 9 389
261 685
)
A28x9.00 - 15 7 234 710 381
g28x13 - 15 11,5 330 711 381
r
29x12.00 - 15 10 310 742 381
i
c29x12.50 - 15 10 310 742 381
u29x13.50 - 15 10 381
351 742
l
t31x11.50 - 15 8 301 793 381
u31x12.50 - 15 10 310 792 381
r
31x13.50 - 15 10 351 782 381
a
l31x13.5 - 15 10 351 782 381
31x15.50 - 15 13 391 792 381
h
i31x15.5 - 15 13 391 792 381
g33x12.50 - 15 10 310 843 381
h
33x15.50 - 15 13 391 843 381
f36x13.50 - 15 10 351 909 381
l38x14.00 - 20 11 508
356 991
o
t38x18.00 - 20 14 457 991 508
a38x20.00 - 16.1 16 488 991 409
t
i41x14.00 - 20 11 356 1 067 508
o42x25.00 - 20 20,5 622 1 080 508
n43x13.50 - 22 10 559
360 1 102
t44x18.00 - 20 14 457 1 143 508
y44x41.00 - 20 36 991 1 143 508
r
e48x20.00 - 24 15 457 1 245 610
s48x25.00 - 20 20,5 635 1 245 508
48x31.00 - 20 26 775 1 245 508
54x31.00 - 26 26 775 1 397 660

43
E/ECE/324/Rev.2/Add.105/Rev.2
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2
Annex 5

Tyre size Theoretical Nominal section Overall Nominal rim

designation rim width width (S1) diameter (D) diameter (d)
code (A1) (mm) (mm) (mm)
66x43.00 - 25 36 1 054 1 702 635
66x43.00 - 26 36 1 054 1 702 660
66x44.00 - 25 36 1 118 1 702 635
67x34.00 - 25 30 864 1 727 635
67x34.00 - 26 30 864 1 727 660
67x34.00 - 30 30 864 1 727 762
68x50.00 - 32 44 1 270 1 753 813
VA73x44.00 - 32 36 1 118 1 880 813
DH73x44.00 - 32 36 1 118 1 880 813
DH73x50.00-32 44 1270 1880 813

Notes:
1. These Tyres may be classified in categories of use "Tractor Drive Wheels" or "Implement".
2. Implement Tyres are identified either by suffix "IMP" placed after the Tyre size designation (e.g. 11x4.00 -
4 IMP)or by the word "IMPLEMENT" marked on the Tyre sidewalls.
3. Tyres of radial structure are identified by means of the letter "R" in place of " - " (e.g. 11x4.00 R 4).
4. Coefficient "b" for the calculation of the Overall diameter Dmax:
(a) 1.12 for tyres with Nominal rim Diameter (d) less than 380 mm;
(b) 1.10 for tyres with Nominal rim Diameter (d) 381 mm and above.

44
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E/ECE/TRANS/505/Rev.2/Add.105/Rev.2
Annex 6

Annex 6

Test method for measuring tyre dimensions

1. The tyre shall be mounted on the measuring rim specified by the
manufacturer and is inflated to a pressure specified by the manufacturer.
1.1. To seat the beads do not exceed the inflation pressure marked on the tyre
sidewalls.
1.2. Having properly seated tyre beads on the rim, adjust the pressure to the value
specified for tyre measurements.
2. The tyre fitted on its rim is conditioned to the ambient temperature of the
laboratory for at least 24 hours.
3. The pressure is readjusted to the value specified in paragraph 1.
4. The overall width is measured by calliper at six equally-paced points, account
being taken of the thickness of the protective ribs or bands. The highest
measurement so obtained is taken as the overall width.
5. The outer diameter is determined by measuring the maximum circumference
and dividing the figure so obtained by π (3,1416).

45
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E/ECE/TRANS/505/Rev.2/Add.105/Rev.2
Annex 7

Annex 7

Variation of load capacity with speed

(See paragraphs 2.30. and 2.31. of this Regulation)
Part A: Drive wheel tyres for agricultural tractors
Applicable to tyres classified with categories of use: "Tractor drive wheel"
(see paragraph 2.20. of this Regulation)
Variation of load carrying capacity (per cent)

The above load/speed variations table does not apply to IF and VF Tyres.
The above load/speed variations apply when the tyre is not subjected to sustained high
torque service.
(+) For field applications with sustained high torque service the values shown in the line
30 km/h apply.
(1) These percentages apply only in case of tyres listed in Annex 5, Table 7, with
nominal rim diameter (d) 381 mm and above, marked with speed symbol "B"
.

46
E/ECE/324/Rev.2/Add.105/Rev.2
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2
Annex 7

Part B: Steering wheel tyres for agricultural and forestry tractors

Applicable to tyres classified with category of use "Tractor steering wheels"
and marked "Front" or "F-1" or "F-2" (see paragraph 2.21. of this Regulation)
Variation of load carrying capacity (per cent) (See paragraphs 2.30. and 2.31. of this
Regulation)
Speed Speed category symbol
(km/h) A6 A8
10 +50 +67
15 +43 +50
20 +35 +39
25 +15 +28
30 [0] +11
35 -10 +4
40 -20 [0]
45 - -7

Part C: Implement tyres

Applicable to tyres classified with categories of use: "Implement"
and marked "IMP" or "IMPLEMENT" (see paragraph 2.22. of this
Regulation)
Variation of load carrying capacity (per cent) (see paragraphs 2.30. and 2.31. of this
Regulation)

47
E/ECE/324/Rev.2/Add.105/Rev.2
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2
Annex 7

Part D: Tyres for forestry machines

Applicable to tyres classified with categories of use: "Forestry machines"

(see paragraph 2.41. of this Regulation)
Variation of load carrying capacity (per cent) for tyres marked with speed category
symbol A8
Service condition Speed (km/h) per cent

Road service 20 23
30 7
40 [0]

48
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E/ECE/TRANS/505/Rev.2/Add.105/Rev.2
Annex 8

Annex 8

Test procedure to assess tyre resistance to bursting

1. Preparing the tyre
1.1. Mount a new tyre on the test equipment. Wheels used for the test shall be
suitable to withstand, with no deformation, the highest value of pressure
achievable during the test.
1.2. Carefully centre the tyre beads on the retention device and adjust the outer
distance of the tyre beads to a value corresponding to the width of the rim
specified by the manufacturer pursuant to paragraph 4.1.10. of this
Regulation.
1.3. Fill the tyre with water taking care that all the air inside the tyre is expelled.
2. Test procedure
2.1. Activate the apparatus and increase the pressure of the water inside the tyre
in order to reach progressively the limit given by two and half times the
pressure specified by the tyre manufacturer pursuant to paragraph 4.1.12. of
this Regulation;
2.1.1. In no case, however, the limit value shall be lower than 6 bar (600 kPa) or
higher than 10 bar (1 000 kPa).
2.2. Maintain constant the value of the pressure for at least 10 minutes.
2.3. Decrease, progressively, the pressure of the water to zero and drain the tyre.
2.4. Whilst the pressure of the water inside the tyre is higher than the ambient
pressure, nobody shall stand inside the test room that shall be safely locked.
3. Equivalent test methods
If a method other than that described above is used, its equivalence must be
demonstrated.

49
E/ECE/324/Rev.2/Add.105/Rev.2
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2
Annex 9

Annex 9

Load/speed test procedure

1. Scope and range of application
1.1. This test procedure is applicable for new tyres marked with speed category
symbol "D".
1.2. It serves the purpose to assess the suitability of the tyre for the claimed
performances.
2. Preparing the tyre
2.1. Mount new tyres on the test rim specified by the manufacturer pursuant to
paragraph 4.1.10. of this Regulation.
2.1.1. To seat the beads do not exceed the maximum pressure marked on the tyre
sidewalls.
2.2. Use a new inner tube when testing tyres with inner tubes (i.e. tyres not
bearing the marking "Tubeless").
2.3. With the tyre beads properly seated on the rim, inflate the tyre to the pressure
corresponding to the test pressure specified by the tyre manufacturer for the
type of test programme, pursuant to paragraph 4.1.15. of this Regulation.
2.4. Condition the tyre and wheel assembly at test room temperature for not less
than three hours.
2.5. Readjust the tyre pressure to that specified in paragraph 2.3. above.
2.6. On request of the tyre manufacturer proceed with the test programme as
specified in either of the following paragraphs:
Test procedure in a laboratory on a test drum (paragraph 3. below), or
Test procedure on a road using a trailer (paragraph 4.).
3. Test procedure on a test drum
3.1. Mount the tyre and wheel assembly on the test axle and press it against the
outer face of a smooth power-driven test drum of at least
1,700 mm ± 1 per cent in diameter having a surface at least as wide as the
tyre tread.
3.1.1. Drum widths narrower than the tyre tread pattern may be used if the tyre
manufacturer agrees.
3.2. Test drum speed: 20 km/h.
3.3. Apply to test axle a series of masses in accordance with the load/speed test
programme shown in paragraph 3.4. below, with reference to the test load
which equates:
3.3.1. The mass corresponding to load index marked on the tyre in case of tyres
marked with speed symbol D.

50
E/ECE/324/Rev.2/Add.105/Rev.2
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2
Annex 9

3.4. Load/speed test programme:

Tyre speed category symbol Test step Percentage of the test load Duration (hours)

1 66 per cent 7
D 2 84 per cent 16
3 101 per cent 24

3.4.1. In case of a test drum diameter larger than 1,700 mm ± 1 per cent, the above
"percentage of test load" shall be increased as follows:
F1 = K ·F2

Where:

K
R 1 / R 2  R 2  rT 
R 1  rT 
R1 is the diameter of test drum, in millimeter

R2 is the diameter of the reference test drum of 1,700 mm

rT is the tyre outer diameter (see paragraph 6.2. of this Regulation), in

millimeter
F1 is the percentage of load to be applied for the test drum

F2 is the percentage of load, as per above table, to be applied for

reference test drum of 1,700 mm
Example:
K = 1 for a test drum diameter of 1,700 mm;
In case of a test drum diameter of 3,000 mm and a tyre diameter of 1500 mm:

51
E/ECE/324/Rev.2/Add.105/Rev.2
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2
Annex 9
4.3.1. Temporary interruptions are allowed, but they must be compensated by an
additional run-in of 5 min for every 20 minutes of interruption.
4.4. The tyre pressure must not be corrected and the test load must be kept
constant throughout the test.
4.5. During the test the ambient temperature shall be between 5 C and 30 C or
at another temperature if the manufacturer so agrees.
5. Equivalent test methods
If a method other than those described above is used, its equivalence must be
demonstrated.

52
E/ECE/324/Rev.2/Add.105/Rev.2
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2
Annex 10

Annex 10

Tyre classification code

(Optional marking)
Classification Nomenclature
code

F-1 Agricultural tractor steering wheel tyres: single rib tread

F-2 Agricultural tractor steering wheel tyres: multiple rib tread
F-3 Steering wheel tyres: industrial service (construction application)
G-1 Garden tractor tyres (implement tyres): traction service
G-2 Garden tractor tyres (implement tyres): flotation traction service
G-3 Garden tractor tyres (implement tyres): maximum flotation service
I-1 Agricultural implement tyres: multi-rib tread
I-2 Agricultural implement tyres: moderate traction service
I-3 Agricultural implement tyres: traction tread
I-4 Agricultural implement tyres: plough tail wheel service
I-5 Agricultural implement tyres: steering service
I-6 Agricultural implement tyres: Smooth tread
LS-1 Logging and forestry service tyres: regular tread
LS-2 Logging and forestry service tyres: intermediate tread
LS-3 Logging and forestry service tyres: deep tread
LS-4 Logging and forestry service tyres: shallow tread
R-1 Agricultural tractor drive wheel tyres: regular tread
R-2 Agricultural tractor drive wheel tyres: cane and rice service (deep tread)
R-3 Agricultural tractor drive wheel tyres: flotation service (shallow tread)
R-4 Drive wheel tyres: industrial service (construction application)

53
E/ECE/324/Rev.2/Add.105/Rev.2
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2
Annex 11

Annex 11

Example of the pictogram to be marked on both tyre

sidewalls of the tyres to explicit the maximum inflation
pressure not to be exceeded for bead seating during tyre
mounting

a = 2 mm min (height of lettering)

b = 12 mm min for tyre section height < 120 mm
18 mm min for tyre section height > 120 mm
c = 14 mm min (width of lettering)

The pictogram must be placed on both sidewalls.

The value of inflation pressure (250 kPa in the example) must be the same as
specified by the tyre manufacturer in paragraph 4.1.14. of this Regulation.

54
E/ECE/324/Rev.2/Add.105/Rev.2/Amend.1−E/ECE/TRANS/505/Rev.2/Add.105/Rev.2/Amend.1

22 June 2015

Agreement

Concerning the Adoption of Uniform Technical Prescriptions for

Wheeled Vehicles, Equipment and Parts which can be Fitted and/or be
Used on Wheeled Vehicles and the Conditions for Reciprocal
Recognition of Approvals Granted on the Basis of these Prescriptions*

(Revision 2, including the amendments which entered into force on 16 October 1995)

_________

Addendum 105 – Regulation No. 106

Revision 2 - Amendment 1

Supplement 11 to the 00 series of amendments – Date of entry into force: 15 June 2015

Uniform provisions concerning the approval of pneumatic tyres for

agricultural vehicles and their trailers

This document is meant purely as documentation tool. The authentic and legal binding text
is: ECE/TRANS/WP.29/2014/50/Rev.1.
_________

UNITED NATIONS

GE.15-
E/ECE/324/Rev.2/Add.105/Rev.2/Amend.1
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2/Amend.1

Paragraph 1., amend to read:

"1. Scope
…
It does not apply to tyre types designated primarily for other purposes, such
as:
(a) Earth-moving equipment;
(b) Industrial and lift trucks."
Paragraph 2.1.3., amend to read:
" Category of use:
…
(g) Forestry machines – standard tread;
(h) Forestry machines – special tread;
(i) Construction applications (IND)."
Insert a new paragraph 2.15.11., to read:
"2.15.11. The letters "IND" after the nominal rim diameter marking in case of tyres for
construction application (industrial tractors)."
Insert a new paragraph 2.42., to read:
"2.42. "Construction application (industrial tractor) tyre" means a tyre designed to
be fitted on industrial tractors, backhoe loaders and other vehicles working in
industrial or construction applications (e.g. loaders, excavators, etc.) or some
agricultural vehicles (e.g. telehandlers)."
Paragraphs 3.1.4.1. and 3.1.4.2., amend to read:
"3.1.4.1. In the case of implement tyre, the service description supplemented with the
relevant application symbol;
3.1.4.2. In the case of implement tyre for mixed applications, two service descriptions
one for "trailer" applications and the other for "traction";"
Paragraph 3.1.7., amend to read:
"3.1.7. The inscriptions "F-1" or "F-2" or "F-3" in the case of a Tractor steering
wheel tyre that is not already marked as per paragraph 2.15.6. above;"
Paragraph 3.1.12., amend to read:
"3.1.12. The inscription "IF" in front of the tyre-size designation when the tyre is
"Improved Flexion Tyre".
The inscription "VF" in front of the tyre-size designation when the tyre is
"Very High Flexion Tyre".
Insert a new paragraph 3.1.13., to read:
"3.1.13. The inscription "R-4" in the case of a construction application tyre, identified in
Annex 5, Table 9, that is not already marked as per paragraph 2.15.11. above."
Paragraph 3.1.13. (former), renumber as paragraph 3.2.
Paragraphs 3.2. to 3.5., renumber as paragraphs 3.3. to 3.6.

2
E/ECE/324/Rev.2/Add.105/Rev.2/Amend.1
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2/Amend.1

Paragraph 6.4.2., add at the bottom of the table a new row, to read:
"
…
Construction Applications 0.96 1.04 0.97 1.07

Annex 3,
Add a new Part E, to read:
"Part E: Tyres for construction applications (industrial tractors)
Example of the markings to be borne by types of tyres complying with this Regulation
b 400/80 – 24 IND b b 156 A8 b b 153 B b
c TUBELESS c c 2513 c
Minimum heights of markings:
b: 9 mm c: 4 mm
These markings define a tyre for construction applications (IND):
(a) Having a nominal section width of 400;
(b) Having a nominal aspect ratio of 80;
(c) Of diagonal ply structure (-);
(d) Having a nominal rim diameter of 610 mm for which the code is 24;
(e) Having a load capacity of 4000 kg, corresponding to load index 156 in
Annex 4;
(f) Classified in the speed category A8 (reference speed 40 km/h) ;
(g) Allowed to be used additionally at 50 km/h (speed category symbol B)
with a load, capacity of 3650 kg corresponding to the load capacity
index 153 shown in Annex 4;
(h) For fitting without an inner tube ("TUBELESS");
(i) Manufactured during the twenty-fifth week of the year 2013 (see
paragraph 3.2. of the Regulation).
The positioning and order of the markings constituting the tyre designation
are as follows:
(a) The size designation, comprising the nominal section width, the
nominal aspect ratio, the type of structure symbol, the nominal rim
diameter and the suffix IND, must be grouped as shown in the above
example: 400/80 – 24 IND;
(b) The service description (load index and the speed category symbol) is
placed near the size designation. It may either precede or follow it or
be placed above or below it;
(c) The symbols "TUBELESS', "R-4" if applicable, and the date of
production may be at a distance from the size designation";
(d) The marking of the additional Service Description inside the circle, if
any, may show either the speed category symbol after or below the
load index.

3
E/ECE/324/Rev.2/Add.105/Rev.2/Amend.1
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2/Amend.1

Annex 5,
Table 1, Note 1, amend to read:
"1. Agricultural steering wheels tyres are identified either by suffix "Front" placed after
the Tyre size designation ( e.g. 4.00 - 9 Front) or by one of the following additional
markings added to the Tyre sidewalls: "F - 1", "F - 2" or "F - 3"".
Add new Tables 8 and 9, to read:
"Table 8
Forestry Tyres – Code Designated sizes
Theoretical Nominal section Overall Nominal rim
Tyre size
rim width width (S1) diameter (D) diameter (d)
designation
code (A1) (mm) (mm) (mm)

23.1-26 LS 20 587 1632 660

24.5-32 LS 21 622 1831 813
28L-26 LS 25 714 1644 660
30.5L-32 LS 27 775 1847 813
35.5L-32 LS 31 902 2011 813

Notes:
1. Forestry Tyres are identified by suffix "LS-2" or "LS-3" placed after the Tyre size designation (e.g. 30.5L- 32 LS-2).
2. Tyres of radial structure are identified by means of the letter "R" in place of "-" (e.g. 30.5LR32 LS).
Table 9
Tyres for construction applications (industrial tractors)

Overall Nominal rim

Theoretical Nominal section
Tyre size diameter (D) diameter (d)
rim width width (S1) (mm)
designation (mm) (mm)
code (A1)
Radial Diagonal Radial Diagonal

14.9-24 13 378 378 1 245 1 240 610

14.9-28 13 378 378 1 350 1 345 711
16.9-24 15 429 429 1 320 1 310 610
16.9-28 15 429 429 1 420 1 410 711
16.9-34 15 429 1 560 864
17.5L-24 15 445 445 1 250 1 241 610
18.4-24 16 467 467 1 395 1 375 610
18.4-26 16 467 1 425 660
18.4-28 16 467 467 1 490 1 477 711
18.4-30 16 467 1 525 762
19.5L-24 17 495 495 1 320 1 314 610
21L-24 18 533 533 1 395 1 378 610
23.1-26 20 587 1 580 660
Notes:
1. These tyres are identified either by suffix "IND", placed after the Tyre size designation (e.g. 14.9-24 IND), or
by the following marking added to the tyre sidewalls: "R – 4".
2. Tyres of radial structure are identified by means of the letter "R " in place of " - " (e.g. 14.9 R 24).
3. Coefficient for the calculation of the overall width of radial tyres: + 8 %."

4
E/ECE/324/Rev.2/Add.105/Rev.2/Amend.1
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2/Amend.1

Annex 7,
Add a new Part E, to read:
"Part E: Tyres for construction applications (industrial tractors)
Applicable to tyres classified with categories of use: "Construction
Applications" (see paragraph 2.42.)
Variation of load carrying capacity (per cent) for tyres marked with speed category
symbol A8
Speed (km/h) Variation of load carrying capacity (%)
Constant load Cyclic applications (+)
5 + 45 + 67 (1)
10 + 25 + 50 (2)
15 + 13 + 34
20 + 9 + 23
25 + 6 + 11
30 + 4 + 7
35 + 2 + 3
40 [0] [0]
45 - 4 - 4
50 - 9 - 9
(+) Cyclic means applications where tyres are used one way laden and return unladen
(e.g loaders).
(1) One way distance 150 m, fully loaded.
(2) One way distance 600 m, fully loaded."

5
E/ECE/324/Rev.2/Add.105/Rev.2/Amend.2−E/ECE/TRANS/505/Rev.2/Add.105/Rev.2/Amend.2

9 November 2015

Agreement
Concerning the Adoption of Uniform Technical Prescriptions for
Wheeled Vehicles, Equipment and Parts which can be Fitted and/or be
Used on Wheeled Vehicles and the Conditions for Reciprocal
Recognition of Approvals Granted on the Basis of these Prescriptions*

(Revision 2, including the amendments which entered into force on 16 October 1995)
_________

Addendum 105 – Regulation No. 106

Revision 2 - Amendment 2

Supplement 12 to the original version of the Regulation – Date of entry into force:
8 October 2015

Uniform provisions concerning the approval of pneumatic tyres for

agricultural vehicles and their trailers

This document is meant purely as documentation tool. The authentic and legal binding text is:
ECE/TRANS/WP.29/2015/10.
_________

UNITED NATIONS

Annex 5,
Table 7 (1 of 4), delete the complete row for the following tyre size designations:
AT21x7–10 and AT22x9–8.
Table 7 (2 of 4), delete the complete row for the following tyre size designations:
AT23x7–10, AT23x8–11, AT24x8–11, AT24x9–11, AT24x10–11, AT25x8–12,
AT25x11–9 and AT25x11–10.

2
E/ECE/324/Rev.2/Add.105/Rev.2/Amend.3−E/ECE/TRANS/505/Rev.2/Add.105/Rev.2/Amend.3

11 July 2016

Agreement

Concerning the Adoption of Uniform Technical Prescriptions for

Wheeled Vehicles, Equipment and Parts which can be Fitted and/or be
Used on Wheeled Vehicles and the Conditions for Reciprocal
Recognition of Approvals Granted on the Basis of these Prescriptions*

(Revision 2, including the amendments which entered into force on 16 October 1995)
_________

Addendum 105 – Regulation No. 106

Revision 2 - Amendment 3

Supplement 13 to the original version of the Regulation – Date of entry into force: 18 June 2016

Uniform provisions concerning the approval of pneumatic tyres for

agricultural vehicles and their trailers

This document is meant purely as documentation tool. The authentic and legal binding text is:
ECE/TRANS/WP.29/2015/109.
_________

UNITED NATIONS

Annex 5,
Table 5, amend to read:
"Table 5 (1 of 3)
Agricultural implement tyres - Normal section sizes
Overall diameter (D) [mm] Nominal rim
Tyre size Theoretical rim Nominal section
diameter (d)
designation width code (A1) width (S1) [mm] (*) [mm]

4.00 - 16 IMP 3 114 618 406

4.00 - 18 IMP 3 112 672 688 457
4.00 - 19 IMP 3 114 694 483
4.00 - 21 IMP 3 112 765 533
…
4.50 - 16 IMP 3 123 647 406
4.50 - 19 IMP 3 124 720 733 483
4.80 - 8 IMP 3,75 121 423 449 203
…

Table 5 (2 of 3)
Agricultural implement tyres - Normal section sizes
Overall diameter (D) [mm] Nominal rim
Tyre size Theoretical rim Nominal section
diameter (d)
designation width code (A1) width (S1) [mm] (*) [mm]
….
6.0 - 12 IMP 5 155 569 305
6.00 - 12 IMP 5 152 579 305
6.00 - 16 IMP 4 158 712 729 406
6.00 - 19 IMP 4,5 169 810 483
6.00 - 20 IMP 4,5 169 830 508
….
Table 5 (3 of 3)
Agricultural implement tyres - Normal section sizes
Overall diameter (D) [mm] Nominal rim
Tyre size Theoretical rim Nominal section
diameter (d)
designation width code (A1) width (S1) [mm] (*) [mm]
…..
8 - 16 IMP 6 211 795 406
8.00 - 6 IMP 7 203 452 152
8.00 - 12 IMP 5 214 710 305
8.00 - 16 IMP 6 206 808 406
8.00 - 19 IMP 6 214 888 483
….

2
E/ECE/324/Rev.2/Add.105/Rev.2/Amend.3
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2/Amend.3

Table 6, amend to read

"Table 6 (2 of 3)
Agricultural implement tyres - Low section sizes
Overall diameter (D) [mm] Nominal rim
Tyre size Theoretical rim Nominal section
diameter (d)
designation width code (A1) width (S1) [mm] (*) [mm]
……
15.0/55 - 17 IMP 13 391 850 872 432
10.5/65 - 16 IMP 9 274 755 406
11.0/60 - 16 IMP 9 281 742 406
…….
10.0/75 - 12 IMP 9 264 685 305
10.0 - 15.3 IMP 9 258 785 389
10.0/75 - 15.3 IMP 9 264 760 780 389
10.0/75 - 16 IMP 9 264 805 406
….
"
Annex 7,
Part D, amend to read:
"Part D: Tyres for forestry machines
Applicable to tyres classified with categories of use: "Forestry machines" (see
paragraph 2.41. of this Regulation)
Variation of load carrying capacity (per cent) for tyres marked with speed category symbols
A6 and A8

Service condition Speed (Km/h) A6 A8

Road service 20 +15 % +23 %

30 0 +7 %
40 -10 % 0
"

3
E/ECE/324/Rev.2/Add.105/Rev.2/Amend.4−E/ECE/TRANS/505/Rev.2/Add.105/Rev.2/Amend.4

22 February 2017

(Revision 2, including the amendments which entered into force on 16 October 1995)
_________

Addendum 105 – Regulation No. 106

Revision 2 - Amendment 4

Supplement 14 to the original version of the Regulation – Date of entry into force:
9 February 2017

Uniform provisions concerning the approval of pneumatic tyres for

agricultural vehicles and their trailers
This document is meant purely as documentation tool. The authentic and legal binding text is:
ECE/TRANS/WP.29/2016/59.
_________

UNITED NATIONS

Annex 4,
Table, amend to read:
"
LI kg LI kg LI kg LI kg
1 46.2 71 345 141 2 575 211 19 500
2 47.5 72 355 142 2 650 212 20 000
3 48.7 73 365 143 2 725 213 20 600
4 50 74 375 144 2 800 214 21 200
5 51.5 75 387 145 2 900 215 21 800
6 53 76 400 146 3 000 216 22 400
7 54.5 77 412 147 3 075 217 23 000
8 56 78 425 148 3 150 218 23 600
9 58 79 437 149 3 250 219 24 300
10 60 80 450 150 3 350 220 25 000
11 61.5 81 462 151 3 450 221 25 750
12 63 82 475 152 3 550 222 26 500
13 65 83 487 153 3 650 223 27 250
14 67 84 500 154 3 750 224 28 000
15 69 85 515 155 3 875 225 29 000
16 71 86 530 156 4 000 226 30 000
17 73 87 545 157 4 125 227 30 750
18 75 88 560 158 4 250 228 31 500
19 77.5 89 580 159 4 375 229 32 500
20 80 90 600 160 4 500 230 33 500
21 82.5 91 615 161 4 625 231 34 500
22 85 92 630 162 4 750 232 35 500
23 87.5 93 650 163 4 875 233 36 500
24 90 94 670 164 5 000 234 37 500
25 92.5 95 690 165 5 150 235 38 750
26 95 96 710 166 5 300 236 40 000
27 97.5 97 730 167 5 450 237 41 250
28 100 98 750 168 5 600 238 42 500
29 103 99 775 169 5 800 239 43 750
30 106 100 800 170 6 000 240 45 000
31 109 101 825 171 6 150 241 46 250
32 112 102 850 172 6 300 242 47 500
33 115 103 875 173 6 500 243 48 750
34 118 104 900 174 6 700 244 50 000
35 121 105 925 175 6 900 245 51 500
36 125 106 950 176 7 100 246 53 000
37 128 107 975 177 7 300 247 54 500
38 132 108 1 000 178 7 500 248 56 000
39 136 109 1 030 179 7 750 249 58 000
40 140 110 1 060 180 8 000 250 60 000
41 145 111 1 090 181 8 250 251 61 500
42 150 112 1 120 182 8 500 252 63 000
43 155 113 1 150 183 8 750 253 65 000
44 160 114 1 180 184 9 000 254 67 000
45 165 115 1 215 185 9 250 255 69 000
46 170 116 1 250 186 9 500 256 71 000
47 175 117 1 285 187 9 750 257 73 000
48 180 118 1 320 188 10 000 258 75 000
49 185 119 1 360 189 10 300 259 77 500
50 190 120 1 400 190 10 600 260 80 000
51 195 121 1 450 191 10 900 261 82 500
52 200 122 1 500 192 11 200 262 85 000
53 206 123 1 550 193 11 500 263 87 500
54 212 124 1 600 194 11 800 264 90 000
55 218 125 1 650 195 12 150 265 92 500
56 224 126 1 700 196 12 500 266 95 000
57 230 127 1 750 197 12 850 267 97 500
58 236 128 1 800 198 13 200 268 100 000
59 243 129 1 850 199 13 600 269 103 000
60 250 130 1 900 200 14 000 270 106 000
61 257 131 1 950 201 14 500 271 109 000
62 265 132 2 000 202 15 000 272 112 000
63 272 133 2 060 203 15 500 273 115 000
64 280 134 2 120 204 16 000 274 118 000
65 290 135 2 180 205 16 500 275 121 000
66 300 136 2 240 206 17 000 276 125 000
1500

2
E/ECE/324/Rev.2/Add.105/Rev.2/Amend.4
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2/Amend.4

LI kg LI kg LI kg LI kg
67 307 137 2 300 207 17 500 277 128 500
68 315 138 2 360 208 18 000 278 132 000
69 325 139 2 430 209 18 500 279 136 000
70 335 140 2 500 210 19 000
"

Annex 5,
Table 4, amend to read:
"Drive wheel tyres for agricultural tractors - Low section series
Nominal rim
Tyre size Theoretical rim Nominal section Overall diameter
diameter (d)
designation (1) width code (A1) width (S1) (mm) (D) (mm)
(mm)

300/70R20 9 295 952 508

320/70R20 10 319 982 508
320/70R24 10 319 1 094 610
320/70R28 10 319 1 189 711
360/70R20 11 357 1 042 508
360/70R24 11 357 1 152 610
360/70R28 11 357 1 251 711
380/70R20 12 380 1 082 508
380/70R24 12 380 1 190 610
380/70R28 12 380 1 293 711
420/70R24 13 418 1 248 610
420/70R28 13 418 1 349 711
420/70R30 13 418 1 398 762
480/70R24 15 479 1 316 610
480/70R26 15 479 1 372 660
480/70R28 15 479 1 421 711
480/70R30 15 479 1 478 762
480/70R34 15 479 1 580 864
480/70R38 15 479 1 681 965
520/70R26 16 516 1 456 660
520/70R30 16 516 1 536 762
520/70R34 16 516 1 640 864
520/70R38 16 516 1 749 965
580/70R38 18 577 1 827 965
(1) "Improved flexion tyres" are identified by means of the letters "IF" added in front of the size
designation (e.g. IF480/70R38) ; "Very high flexion tyres" are identified by means of the letters
"VF" added in front of the size designation (e.g. VF480/70R38) – see paragraph 3.1.12. of this
Regulation.
"

3
E/ECE/324/Rev.2/Add.105/Rev.2/Amend.4
E/ECE/TRANS/505/Rev.1/Rev.2/Add.105/Rev.2/Amend.4

Annex 7,
Part A, amend to read:

"Part A: Drive wheel tyres for agricultural tractors

Applicable to tyres classified with categories of use: "Tractor drive wheel" (see
paragraph 2.20. of this Regulation)
Variation of load carrying capacity (per cent)

Speed category symbol

Speed
(km/h) A2 A6 (+) A8 (+) D (+) A8 (2) D (2) (1)

10 [0] +40 +50 +50 0 0 + 58

15 -6 +30 +34 +34 0 0 + 32
20 -11 +20 +23 +23 0 0 + 26
25 -16 +7 +11 +18,5 0 0 + 19
30 -20 [0] +7 +15 0 0 + 12
35 -24 -5 +3 +12 0 0 + 10
40 -27 -10 [0] +9,5 [0] 0 +6
45 - - -4 +7 -4 0 +2
50 - - -9 +5 -9 0 [0]
55 - - - +3 - 0 -
60 - - - +1,5 - 0 -
65 - - - [0] - [0] -
70 - - - -9 - -9 -

The above load/speed variations apply when the tyre is not subjected to sustained high torque
service.
(+) For field applications with sustained high torque service the values shown in the line
30 km/h apply.
(1) These percentages apply only in case of tyres listed in Annex 5, Table 7, with nominal
rim diameter (d) 381 mm and above, marked with speed symbol "B"
(2) These load/speed variations apply to IF and VF Tyres."

4
E/ECE/324/Rev.2/Add.105/Rev.2/Amend.5−E/ECE/TRANS/505/Rev.2/Add.105/Rev.2/Amend.5

27 April 2018

Agreement
Concerning the Adoption of Harmonized Technical United Nations
Regulations for Wheeled Vehicles, Equipment and Parts which can be
Fitted and/or be Used on Wheeled Vehicles and the Conditions for
Reciprocal Recognition of Approvals Granted on the Basis of these
United Nations Regulations*

(Revision 3, including the amendments which entered into force on 14 September 2017)
_________

Addendum 105 – UN Regulation No. 106

Revision 2 - Amendment 5

Supplement 15 to the original version of the Regulation – Date of entry into force: 10 February
2018

Uniform provisions concerning the approval of pneumatic tyres for

agricultural vehicles and their trailers
This document is meant purely as documentation tool. The authentic and legal binding texts is:
ECE/TRANS/WP.29/2017/70 (as amended by paragraph 71 of the report
ECE/TRANS/WP.29/1131).
_________

UNITED NATIONS

*
Former titles of the Agreement:
Agreement concerning the Adoption of Uniform Conditions of Approval and Reciprocal Recognition of
Approval for Motor Vehicle Equipment and Parts, done at Geneva on 20 March 1958 (original version);
Agreement concerning the Adoption of Uniform Technical Prescriptions for Wheeled Vehicles,
Equipment and Parts which can be Fitted and/or be Used on Wheeled Vehicles and the Conditions for
Reciprocal Recognition of Approvals Granted on the Basis of these Prescriptions, done at Geneva on
5 October 1995 (Revision 2).
E/ECE/324/Rev.2/Add.105/Rev.2/Amend.5
E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.5

Paragraph 1., amend to read:

"1. Scope
This Regulation covers new pneumatic tyres * designed primarily, …..

* For the purpose of this Regulation "tyres" means "pneumatic tyres"."

Paragraph 2.1., amend to read:
2.1. "Type of agricultural tyre" means tyres which do not differ in such essential
characteristics as:
(a) The manufacturer’s name;
(b) Tyre-size designation;
(c) Category of use:
(i) Tractor - steering wheel;
(ii) Tractor - drive wheel - standard tread;
(iii) Tractor - drive wheel - special tread;
(iv) Implement - traction;
(v) Implement - trailer;
(vi) Implement - mixed applications;
(vii) Forestry machines – standard tread;
(viii) Forestry machines – special tread;
(ix) Construction applications (IND).
(d) Structure (diagonal or (bias-ply), bias-belted, radial-ply);
(e) Speed category symbol;
(f) Load capacity index;
(g) Tyre cross-section."
Insert a new paragraph 2.2. to read:
"2.2. "Manufacturer" means the person or body who is responsible to the Type
Approval Authority (TAA) for all aspects of the type-approval and for ensuring
the conformity of production."
Insert a new paragraph 2.3. to read:
"2.3. "Brand name/trademark" means the identification of the brand or trademark
as defined by the tyre manufacturer and marked on the sidewall(s) of the tyre.
The brand name/trademark may be the same as that of the manufacturer."
Insert a new paragraph 2.4. to read:
"2.4. "Trade description/commercial name" means an identification of a range of
tyres as given by the tyre manufacturer. It may coincide with the brand
name/trademark."

2
E/ECE/324//Rev.2/Add.105/Rev.2/Amend.5
E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.5

Paragraph 2.16., amend the table by adding diameter code 'd' 28.5 as follows:
…

Value to be used for

"d"
the calculation in
symbol expressed
paras. 6.2.1.
by codes
and 6.4 (mm)

… …
26.5 673
28.5 724
30.5 775

…"
Renumber paragraphs 2.2. to 2.15.7. (former) as paragraphs 2.5. to 2.18.7.
Paragraph 2.15.8., amend to read:
"2.18.8. The letters "IF" before the nominal section width in case of "Improved Flexion
Tyre"."
Insert a new paragraph 2.18.9., to read:
"2.18.9. The letters "VF" before the nominal section width in case of "Very High
Flexion Tyre".
Renumber paragraphs 2.15.9. to 2.42. as paragraphs 2.18.10. to 2.45. and in the new
paragraph 2.23.1., replace "pneumatic tyre" by "tyre".
Paragraph 2.25. (former 2.22.), amend to read:
"2.25. "Implement tyre" means a tyre designed primarily for agricultural machines or
interchangeable towed equipments (vehicles in category S) or for agricultural
trailers (vehicles in category R); however it may also equip either front steering
wheels and drive wheels of agricultural and forestry tractors (vehicles in
category T), but it is not suitable for sustained high torque services; "
Paragraph 2.26. (former 2.23.), amend to read:
"2.26. "Traction tyre" means a tyre designed primarily for the equipment of driven
axles agricultural machinery, excluding sustained high torque services. The
tread pattern of the tyre generally consists of blocks, lugs or cleats. The type
of application is identified with the symbol: "
Paragraph 2.27. (former 2.24.), amend to read:
"2.27. "Trailer tyre" means a tyre designed for the equipment of non-driven (trailed)
axles of interchangeable towed equipments, agricultural machinery or trailers;"
Paragraph 2.28. (former 2.25.), amend to read:
"2.28. "Mixed applications tyre" means a tyre designed to be fitted to either driven
and non-driven axles of interchangeable towed equipments, agricultural
machinery or trailers; "
Paragraph 3.1., amend to read:
"3.1. Tyres submitted for approval shall bear on both sidewalls the following
markings:
3.1.1. The manufacturer's name or the brand name/trademark;"

3
E/ECE/324/Rev.2/Add.105/Rev.2/Amend.5
E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.5

Insert a new paragraph 3.1.2. to read:

"3.1.2. The trade description/commercial name (see paragraph 2.4. of this
Regulation). However, the trade description is not required when it coincides
with the brand name/trademark."
Paragraph 3.1.2., renumber and amend to read:
"3.1.3. The tyre-size designation;"
Renumber paragraphs 3.1.3. to 3.1.3.3. as paragraphs 3.1.4. to 3.1.4.3.
Paragraph 3.1.4., renumber and amend to read:
"3.1.5. The "service description''"
Renumber paragraph 3.1.4.1. as paragraph 3.1.5.1.
Paragraph 3.1.4.2., renumber and amend to read:
"3.1.5.2. In the case of implement tyre for mixed applications, two service descriptions
one for "trailer" applications and the other for "traction" applications, each
supplemented with the relevant symbol (see paragraphs 2.26. and 2.27. above)
as follows:"
Renumber paragraphs 3.1.5. and 3.1.6. as paragraphs 3.1.6. and 3.1.7.
Paragraph 3.1.7., renumber and amend to read:
"3.1.8. The inscriptions "F-1" or "F-2" or "F-3" in the case of a tractor steering wheel
tyre that is not already marked as per paragraph 2.18.6. above; "
Renumber paragraphs 3.1.8. to 3.1.8.2. as paragraphs 3.1.9. to 3.1.9.2.
Paragraph 3.1.9., renumber and amend to read:
"3.1.10. The inscription "IMPLEMENT" in the case of an implement tyre that is not
already marked as per paragraph 2.18.5. above;"
Delete paragraph 3.1.12.
Renumber paragraphs 3.1.10. to 3.1.11. as paragraphs 3.1.11. to 3.1.12.
Paragraph 3.1.13., amend to read:
"3.1.13. The inscription "R-4" in the case of a construction application tyre, identified
in Annex 5, Table 9, that is not already marked as per paragraph 2.18.12.
above. "
Delete paragraph 3.2.
Insert a new paragraph 3.2. to read:
"3.2. Tyres submitted for approval shall bear on one sidewall only the following
markings: "
Paragraph 3.3., renumber and amend to read (delete the reference to footnote 2):
"3.2.1. The date of manufacture in the form of a group of four digits, the first two
showing the week and the last two the year of manufacture"
Paragraph 3.4., renumber and amend to read:
"3.2.2. The type approval mark, the model of which is given in Annex 2. "
Paragraphs 3.5. to 3.5.2., shall be deleted

4
E/ECE/324//Rev.2/Add.105/Rev.2/Amend.5
E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.5

Paragraph 3.5.3., renumber and amend to read:

"3.3. All markings shall be clearly and legibly moulded and produced as part of the
process during manufacture. The use of branding or other methods of marking
after completion of the original manufacturing process is not permitted."
Renumber paragraph 3.6. as paragraph 3.4.
Paragraphs 4.1. to 4.1.2.2., amend to read:
"4.1. The application for approval of a type of tyre for agricultural and forestry
services with regard to this Regulation shall be submitted by the tyre
manufacturer or by his duly accredited representative. It shall specify:
4.1.1. The tyre-size designation;
4.1.2. The manufacturer's name;
4.1.2.1. The brand name(s)/trademark(s);
4.1.2.2. The trade description(s)/commercial name(s)."
In paragraph 5.1. replace "pneumatic tyre" by "tyre".
Paragraph 5.2., amend to read:
"5.2. An approval number shall be assigned to each type approved. Its first two digits
(at present 00, for the Regulation in its original form) shall indicate the series
of amendments incorporating the most recent major technical amendments
made to the Regulation at the time of issue of the approval. The same
Contracting Party shall not assign the same number to another type of tyre
covered by this Regulation."
In paragraphs 5.3. and 5.4., replace "pneumatic tyre" by "tyre".
Paragraph 6.1.1, amend to read:
"6.1.1. The section width shall be obtained by means of the following formula:
S = S1 + K (A - A1),
Where:
S is the "section width" rounded to the nearest millimetre related to the
measuring rim;
S1 is "the nominal section width" in mm, as shown on the sidewall of the
tyre in the tyre designation as prescribed;
A is the width (expressed in mm)4 of the measuring rim, as shown by the
manufacturer in the descriptive note;
A1 is the width of the theoretical rim; it is taken to equal S1 multiplied by
the factor X as specified by the tyre manufacturer; and K is taken to equal 0.4."
Paragraph 6.2.1., amend to read:
"6.2.1. Except as provided by paragraph 6.2.2., the outer diameter of a tyre is
calculated by the following formula:
D=d+2H
Where:
D is the outer diameter expressed in mm;

5
E/ECE/324/Rev.2/Add.105/Rev.2/Amend.5
E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.5

D is the conventional number denoting the nominal rim diameter

expressed in mm (see paragraph 2.16.);
H is the nominal section height rounded to the nearest millimetre and is
equal to:
H = 0.01 • Ra • S1
Where:
Ra is the nominal aspect ratio;
S1 is the "nominal section width" in mm.
All as shown on the sidewall of the tyre in the tyre-size designation in
conformity with the requirements of paragraph 2.15."
Paragraph 6.3.2., amend to read:
"6.3.2. The overall width of a tyre may not exceed the section width determined
pursuant to paragraph 6.1. by more than the following:
Radial construction: +5 per cent
Diagonal (bias) construction: +8 per cent
Calculated value to be rounded to the nearest mm"
Paragraph 6.4.1., amend to read:
"6.4.1. The outer diameter of a tyre must not be outside the values D min and D max
obtained from the following formulae:
D min = d + 2 • Hmin
D max = d + 2 • Hmax
Where
Hmin = H • a , rounded to the nearest mm
Hmax = H • b , rounded to the nearest mm
"H" and "d" are as defined in paragraph 6.2.1.
Coefficients "a" and "b" are specified in paragraph 6.4.2."
In paragraphs 8.1., 9.1. and 10., replace "pneumatic tyre" by "tyre".
Paragraphs 11.1. to 11.3., amend to read:
"11.1. The Contracting Parties to the 1958 Agreement which apply this Regulation
shall communicate to the United Nations Secretariat the names and addresses
of the Technical Services responsible for conducting approval tests and, where
applicable, of the approved test laboratories and of the Type Approval
Authorities which grant approval and to which forms certifying approval, or
extension of approval, or refusal of approval or withdrawal of approval or
production definitively discontinued, issued in other countries, are to be sent.
11.2. The Contracting Parties to the 1958 Agreement which apply this Regulation
may designate laboratories of tyre manufacturers as approved test laboratories.
11.3. Where a Contracting Party to the 1958 Agreement applies paragraph 11.2.
above, it may, if it so desires, be represented at the tests by one or more persons
of its choice."

6
E/ECE/324//Rev.2/Add.105/Rev.2/Amend.5
E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.5

Annex 1, amend to read:

"Communication
……
of a type of tyre for agricultural vehicles pursuant to UN Regulation No. 106"
Item 1. amend to read:
"1. Manufacturer's name and address :.............................................................................."
Item 2. amend to read:
"2. Tyre type designation3...................................................................................................
2.1. Brand name(s)/trademark(s): ........................................................................................
2.2. Trade description(s)/ Commercial name(s): ................................................................"
Delete item 3.
Renumber items 4. to 5.2. as items 3. to 4.2.
Item 5.3., renumber and amend to read:
"4.3. Structure: diagonal or bias-ply/bias belted/radial2"
Renumber paragraphs 5.4 to 14. as paragraphs 4.4. to 13.
Insert Footnote 3, to read:
"
3 A list of brand name(s)/trademark(s) or Trade description(s)/ Commercial name(s) may be annexed to
this communication. "
Annex 2, amend to read:
"…
The above approval mark affixed to a tyre shows that the type of tyre concerned has
been approved in the Netherlands (E 4) pursuant to UN Regulation No. 106 under approval
number 002439.
…"
Annex 5
Table 4, amend to read:
"Drive wheel tyres for agricultural tractors - Low section series

Tyre size Theoretical rim Nominal section Overall diameter Nominal rim
designation (1) width code (A1) width (S1) (mm) (D) (mm) diameter (d)(mm)

IF / VF IF / VF
300/70R20 9 295 952 508
320/70R20 10 319 982 508
320/70R24 10 319 1 094 610
320/70R28 10 319 1 189 711
360/70R20 11 357 1 042 508

7
E/ECE/324/Rev.2/Add.105/Rev.2/Amend.5
E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.5

Tyre size Theoretical rim Nominal section Overall diameter Nominal rim
designation (1) width code (A1) width (S1) (mm) (D) (mm) diameter (d)(mm)

IF / VF IF / VF
360/70R24 11 357 1 152 610
360/70R28 11 357 1 251 711
380/70R20 12 13 380 379 1 082 508
380/70R24 12 13 380 379 1 190 610
380/70R28 12 13 380 379 1 293 711
420/70R24 13 14 418 415 1 248 610
420/70R28 13 14 418 415 1 349 711
420/70R30 13 14 418 415 1 398 762
480/70R24 15 16 479 475 1 316 610
480/70R26 15 16 479 475 1 372 660
480/70R28 15 16 479 475 1 421 711
480/70R30 15 16 479 475 1 478 762
480/70R34 15 16 479 475 1 580 864
480/70R38 15 16 479 475 1 681 965
520/70R26 16 18 516 521 1 456 660
520/70R30 16 18 516 521 1 536 762
520/70R34 16 18 516 521 1 640 864
520/70R38 16 18 516 521 1 749 965
580/70R38 18 20 577 580 1 827 965
(1)"Improved flexion tyres" are identified by means of the letters "IF" added in front of the size
designation (e.g. IF480/70R38) ; "Very high flexion tyres" are identified by means of the letters "VF"
added in front of the size designation (e.g. VF480/70R38) – see paragraphs 2.18.8. and 2.18.9. of this
Regulation."
Table 7, add the following entries:
"

Theoretical Nominal section Overall Nominal rim

Tyre size
rim width width (S1) diameter (D) diameter (d)
designation
code (A1) (mm) (mm) (mm)

…
24X8.00-12 6.5 204 610 305
24X10.00-12 8 254 610 305
26X8.00-12 6.5 204 660 305
26X8.00-14 6.5 204 660 356
27X10.00-14 8 254 686 356
27X12.00-14 9.5 304 686 356
28X9.00-14 7 227 711 356
28X10.00-12 8 254 711 305
28X10.00-15 8 254 711 381

8
E/ECE/324//Rev.2/Add.105/Rev.2/Amend.5
E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.5

Theoretical Nominal section Overall Nominal rim

Tyre size
rim width width (S1) diameter (D) diameter (d)
designation
code (A1) (mm) (mm) (mm)

28X11.00-14 9 281 711 356

28X11.00-15 9 281 711 381
28X12.00-12 9.5 304 711 305
29X9.00-14 7 227 737 356
29X9.00-15 7 227 737 381
29X9.00-16 7 227 737 406
29X9.50-15 7.5 240 737 381
29X11.00-14 9 281 737 356
29X11.00-16 9 281 737 406
30X9.00-14 7 227 762 356
30X10.00-14 8 254 762 356
30X10.00-15 8 254 762 381
30X11.00-14 9 281 762 356
31X10.00-17 8 254 787 432
32X10.00-16 8 254 813 406
32X10.00-18 8 254 813 457
…
"
Table 9, add the following entry:
"

Overall Nominal rim

Theoretical Nominal section
diameter (D) diameter (d)
Tyre size width (S1) (mm)
rim width (mm) (mm)
designation
code (A1)
Radial Diagonal Radial Diagonal

…
11L-16 IND 8 290 850 406
…
"
Annex 11
In the pictogram, the unit, amend to read:
"250 kPa MAX"

9
E/ECE/324/Rev.2/Add.105/Rev.2/Amend.6−E/ECE/TRANS/505/Rev.2/Add.105/Rev.2/Amend.6

16 January 2019

Agreement
Concerning the Adoption of Harmonized Technical United
Nations Regulations for Wheeled Vehicles, Equipment and Parts which
can be Fitted and/or be Used on Wheeled Vehicles and the Conditions
for Reciprocal Recognition of Approvals Granted on the Basis of these
United Nations Regulations*

(Revision 3, including the amendments which entered into force on 14 September 2017)
_________

Addendum 105 – UN Regulation No. 106

Revision 2 - Amendment 6

Supplement 16 to the original version of the Regulation – Date of entry into force:
29 December 2018

Uniform provisions concerning the approval of pneumatic tyres for

agricultural vehicles and their trailers
This document is meant purely as documentation tool. The authentic and legal binding text is:
ECE/TRANS/WP.29/2018/57.
_________

UNITED NATIONS

GE.19-00747(E)


E/ECE/324/Rev.2/Add.105/Rev.2/Amend.6
E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.6

UN Regulation No. 106, amend to read:

"Uniform provisions concerning the approval of pneumatic

tyres for agricultural vehicles and their trailers
Page

Contents
Regulation
1. Scope ................................................................................................................................................... 3
2. Definitions ........................................................................................................................................... 3
3. Markings ............................................................................................................................................. 9
4. Application for approval ..................................................................................................................... 10
5. Approval.............................................................................................................................................. 11
6. Requirements....................................................................................................................................... 12
7. Modification of tyre type and extension of approval .......................................................................... 14
8. Conformity of production .................................................................................................................... 15
9. Penalties for non-conformity of production ........................................................................................ 15
10. Production definitively discontinued ................................................................................................... 15
11. Names and addresses of Technical Services responsible for conducting approval tests,
of test laboratories, and of Type Approval Authorities ...................................................................... 15
Annexes
1 Communication ................................................................................................................................... 18
2 Arrangement of approval mark ........................................................................................................... 20
3 Arrangement of tyre markings ............................................................................................................ 21
4 List of load capacity indices (LI) and corresponding maximum mass to be carried (kg) .................... 28
5 Theoretical rim, outer diameter and nominal section width of tyres of certain size designations ....... 29
6 Test method for measuring tyre dimensions ....................................................................................... 51
7 Variation of load capacity with speed ................................................................................................. 52
8 Test procedure to assess tyre resistance to bursting ............................................................................ 55
9 Load/speed test procedure ................................................................................................................... 56
10 Tyre classification code ....................................................................................................................... 59
11 Example of the pictogram to be marked on both tyre sidewalls of the tyres to explicit the
maximum inflation pressure not to be exceeded for bead seating during tyre mounting .................... 60

2
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E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.6

1. Scope
This Regulation covers new pneumatic tyres* designed primarily, but not
only, for agricultural and forestry vehicles (power-driven vehicles in category
T1), agricultural machines (power-driven and trailed) and agricultural trailers,
and identified by speed category symbols corresponding to speeds of 65 km/h
(speed symbol "D") and below.
It does not apply to tyre types designated primarily for other purposes, such
as:
(a) Earth-moving equipment;
(b) Industrial and lift trucks.

2. Definitions
For the purposes of this Regulation:
2.1. "Type of agricultural tyre" means tyres which do not differ in such essential
characteristics as:
(a) The manufacturer’s name;
(b) Tyre-size designation;
(c) Category of use:
(i) Tractor - steering wheel**;
(ii) Tractor - drive wheel - standard tread;
(iii) Tractor - drive wheel - special tread;
(iv) Implement - traction;
(v) Implement - trailer;
(vi) Implement - mixed applications;
(vii) Forestry machines – standard tread;
(viii) Forestry machines – special tread;
(ix) Construction applications (IND).
(d) Structure (diagonal or (bias-ply), bias-belted, radial-ply);
(e) Speed category symbol;
(f) Load capacity index;
(g) Tyre cross-section.
2.2. "Manufacturer" means the person or body who is responsible to the Type
Approval Authority (TAA) for all aspects of the type-approval and for
ensuring the conformity of production.

1 As defined in the Consolidated Resolution on the Construction of Vehicles (R.E.3.), document

ECE/TRANS/WP.29/78/Rev.6, para. 2. -
www.unece.org/trans/main/wp29/wp29wgs/wp29gen/wp29resolutions.html
* For the purpose of this Regulation "tyres" means "pneumatic tyres"
** See para. 2.24.

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2.3. "Brand name/trademark" means the identification of the brand or trademark

as defined by the tyre manufacturer and marked on the sidewall(s) of the tyre.
The brand name/trademark may be the same as that of the manufacturer.
2.4. "Trade description/commercial name" means an identification of a range of
tyres as given by the tyre manufacturer. It may coincide with the brand
name/trademark.
2.5. For reference on the following terms see explanatory figure in Appendix 1.
2.6. "Structure of a tyre" means the technical characteristics of the tyre carcass.
The following structures are distinguished in particular:
2.6.1. "Diagonal" or "bias-ply" describes a tyre structure in which the ply cords
extend to the bead and are laid at alternate angles of substantially less than
90 to the centreline of the tread;
2.6.2. "Bias-belted" describes a tyre structure of diagonal (bias-ply) type in which
the carcass is restricted by a belt comprising two or more layers of
substantially inextensible cord material laid at alternate angles close to those
of the carcass;
2.6.3. "Radial" describes a tyre structure in which the ply cords extend to the beads
and are laid substantially at 90 to the centreline of the tread, the carcass
being stabilised by an essentially inextensible circumferential belt;
2.7. "Bead" means the part of a tyre which is of such shape and structure as to fit
the rim and hold the tyre on it;
2.8. "Cord" means the strands forming the fabric of the plies in the tyre;
2.9. "Ply" means a layer of rubber-coated parallel cords;
2.10. "Carcass" means that part of a tyre other than the tread and the rubber
sidewalls which, when inflated, bears the load;
2.11. "Tread" means that part of a tyre which comes into contact with the ground;
2.12. "Sidewall" means the part of the tyre, excluding the tread, which is visible
when the tyre, fitted to a rim, is viewed from the side;
2.13. "Section width (S)" means the linear distance between the outsides of the
sidewalls of an inflated tyre, excluding elevations due to labelling (marking),
decoration or protective bands or ribs;
2.14. "Overall width" means the linear distance between the outside of the
sidewalls of an inflated tyre, including labelling (marking), decoration and
protective bands or ribs;
2.15. "Section height (h)" means a distance equal to half the difference between the
outer diameter of the tyre and the nominal rim diameter;
2.16. "Nominal aspect ratio (Ra)" means one hundred times the number obtained
by dividing the number expressing the nominal section height in millimetres
by the number expressing the nominal section width in millimetres;
2.17. "Outer diameter (D)" means the overall diameter of an inflated new tyre;
2.18. "Tyre-size designation" means a designation showing:
2.18.1. The nominal section width (S1). This value must be expressed in mm.
2.18.2. The nominal aspect ratio (Ra).

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2.18.3. An indication of the structure, placed in front of the nominal rim diameter
marking, as follows:
2.18.3.1. On diagonal (bias-ply) tyres, the symbol "-" or the letter "D";
2.18.3.2. On radial-ply tyres, the letter "R";
2.18.3.3. On bias-belted tyres, the letter "B".
2.18.4. The conventional number "d" denoting the nominal rim diameter;
2.18.5. Optionally, the letters "IMP" after the nominal rim diameter marking in case
of implement tyres;
2.18.6. Optionally, the letters "FRONT" after the nominal rim diameter marking in
case of tractor steering wheel tyres;
2.18.7. However for tyres listed in Annex 5 the "tyre size designation" is that shown
in the first column of those tables.
2.18.8. The letters "IF" before the nominal section width in case of "Improved
Flexion Tyre".
2.18.9. The letters "VF" before the nominal section width in case of "Very High
Flexion Tyre".
2.18.10. The letters "CFO" after the nominal rim diameter marking in case of
"Improved Flexion" or "Very High Flexion" tractor-drive wheel tyres
specifically designed for the equipments of machines to be used in Cyclic
Field Operations.
2.18.11. The letters "CHO" after the nominal rim diameter marking in case of
standard tractor-drive wheel tyres specifically designed for the equipments of
machines to be used in Cyclic Harvesting Operations.
2.18.12. The letters "IND" after the nominal rim diameter marking in case of tyres for
construction application (industrial tractors);
2.18.12.1. The letters “IND” may be replaced by the letters “SS” or “NHS” after the
nominal rim diameter marking in case of tyres for construction applications
as identified in Annex 5 table 10.
2.19. "Nominal rim diameter (d)" means a conventional number denoting the
nominal diameter of the rim on which a tyre is designed to be mounted and
corresponding to the diameter of the rim expressed either by size codes
(number below 100 - see table for equivalence with millimeters) or in mm
(numbers above 100) but not both;

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Value to be used for Value to be used for Value to be used for

"d" "d" "d"
the calculation in the calculation in the calculation in
symbol expressed symbol expressed symbol expressed
paras. 6.2.1 paras. 6.2.1 paras. 6.2.1
by codes by codes by codes
and 6.4 (mm) and 6.4 (mm) and 6.4 (mm)

4 102 19 483 48 1219

5 127 20 508 50 1270
6 152 21 533 52 1321
7 178 22 559 54 1372
8 203 24 610 14.5 368
9 229 25 635 15.5 394
10 254 26 660 16.5 419
11 279 28 711 17.5 445
12 305 30 762 19.5 495
13 330 32 813 20.5 521
14 356 34 864 22.5 572
15 381 36 914 24.5 622
15.3 389 38 965 26.5 673
16 406 40 1016 28.5 724
16.1 409 42 1067 30.5 775
17 432 44 1118 - -
18 457 46 1168 - -

2.20. "Rim" means the support for a tyre-and-tube assembly, or for a tubeless tyre,
on which the tyre beads are seated;
2.21. "Theoretical rim" means the notional rim whose width would be equal to X
times the nominal section width of a tyre; the value "X" must be specified by
the tyre manufacturer or the reference rim width is that mentioned in Annex 5
for the relevant "tyre size designation";
2.22. "Measuring rim" means the rim on which a tyre is fitted for the measurement
of the dimensions;
2.23. "Tractor-drive wheel tyre" means a tyre designed to be fitted to driven axles
of agricultural and forestry tractors (vehicles in categories T) suitable for
sustained high torque service. The tread pattern of the tyre consists of lugs or
cleats;
2.23.1. "Improved Flexion Tyre" or "Very High Flexion Tyre" describes a tyre
structure in which the carcass is more resistant than that of the corresponding
standard tyre.
2.24. "Tractor steering wheel tyre" means a tyre designed to be fitted to non-driven
axles of agricultural and forestry tractors (motor vehicles in category T). The
tread pattern of the tyre generally consists of circumferential grooves and
ribs;
2.25. "Implement tyre" means a tyre designed primarily for agricultural machines
or interchangeable towed equipments (Category S1 vehicles) or for
agricultural trailers (Category R1 vehicles); however it may also equip either
front steering wheels and drive wheels of agricultural and forestry tractors

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(Category T1 vehicles), but it is not suitable for sustained high torque

services;
2.26. "Traction tyre" means a tyre designed primarily for the equipment of driven
axles agricultural machinery, excluding sustained high torque services. The
tread pattern of the tyre generally consists of blocks, lugs or cleats. The type
of application is identified with the symbol:

2.27. "Trailer tyre" means a tyre designed for the equipment of non-driven (trailed)
axles of interchangeable towed equipments, agricultural machinery or
trailers. The type of application is identified with the symbol:

2.28. "Mixed applications tyre" means a tyre designed to be fitted to either driven
and non-driven axles of interchangeable towed equipments, agricultural
machinery or trailers;
2.29. "Service description" means the association of a load capacity index with a
speed category symbol;
2.29.1. In case of implement tyres the service description is supplemented with the
relevant symbol for the type of application concerned (traction or trailer) as
defined in paragraphs 2.26. and 2.27.
2.30. "Supplementary service description" means an additional service description,
marked within a circle, to identify a special type of service (load rating and
speed category) to which the tyre type is also allowed in addition to the
applicable load variation with speed (see Annex 7);
2.31. "Load-capacity index" means one number which indicates the load the tyre
can carry in single formation at the speed corresponding to the associated
speed category and when operated in conformity with the requirements
governing utilisation specified by the manufacturer. The list of these indices
and their corresponding masses is given in Annex 4;
2.32. "Speed category", the reference speed expressed by the speed category
symbol as shown in the table below:

Speed category symbol Reference speed (km/h)

A2 10
A4 20
A6 30
A8 40
B 50
D 65

2.33. "Table: Variation of load capacity with speed" means the tables in Annex 7
showing as a function of the category of use, the type of application, the load
capacity index and the nominal speed category symbol, the maximum load
rating variations which a tyre can withstand when used at speeds different
from that corresponding to its speed category symbol;
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2.33.1. The table "Variation of load capacity with speed" is not applicable to the
"supplementary service description".
2.34. "Maximum load rating" means the maximum mass the tyre is rated to carry:
2.34.1. It must not exceed the percentage of the value associated with the relevant
load capacity index of the tyre as indicated in the table "Load-capacity
variation with speed" (see paragraphs 2.30. and 2.33. above), with reference
to the category of use, the speed category symbol of the tyre and the speed
capability of the vehicle to which the tyre is fitted;
2.35. "Tread groove" means the space between the adjacent ribs or blocks in the
tread pattern;
2.36. "Tread lug (or cleat)" means the solid-block element protruding from the
base of the tread pattern;
2.37. "Special tread" means a tyre, the tread pattern and structure of which are
primarily designed to ensure in marshy areas a better grip than that of a
standard tread tyre. The tread pattern of the tyre generally consists of lugs or
cleats deeper than those of a standard tyre;
2.38. "Chunking" means the breaking away of small pieces of rubber from the
tread;
2.39. "Cord separation" means the parting of the cords from their rubber coating;
2.40. "Ply separation" means the parting of adjacent plies;
2.41. "Tread separation" means the pulling away of the tread from the carcass;
2.42. "Test rim" means the rim on which a tyre must be fitted for the performance
test;
2.43. "Tyre classification code" means the optional marking detailed in Annex 10
that identifies the category of use and the particular type of tread pattern and
application.
2.44. “Forestry tyre” means a tyre designed to be fitted to machines or equipments
used in forestry applications.
2.45. "Construction application (industrial tractor) tyre" means a tyre designed to
be fitted on industrial tractors, backhoe loaders and other vehicles working in
industrial or construction applications (e.g. loaders, excavators, etc.) or some
agricultural vehicles (e.g. telehandlers).
2.46. NHS (not for highway service) means a tyre primarily designed for use
outside of public roads, but suitable for temporary/incidental use on public
roads.
2.47. SS differentiates tyres for off-highway vehicles such as mini and skid-steer
loaders from other tyres which use similar size designations, but may use
different rim bead seat configurations.

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3. Markings
3.1. Tyres submitted for approval shall bear on both sidewalls the following
markings:
3.1.1. The manufacturer's name or the brand name/trademark;
3.1.2. The trade description/commercial name (see paragraph 2.4. of this
Regulation). However, the trade description is not required when it coincides
with the brand name/trademark.
3.1.3. The tyre-size designation;
3.1.4. An indication of the structure as follows:
3.1.4.1. On diagonal (bias-ply) tyres, no additional marking;
3.1.4.2. On radial-ply tyres, optionally, the word "RADIAL";
3.1.4.3. On bias-belted tyres, the words "BIAS-BELTED";
3.1.5. The "service description'';
3.1.5.1. In the case of implement tyre, the service description supplemented with
the relevant application symbol;
3.1.5.2. In the case of implement tyre for mixed applications, two service descriptions
one for "trailer" applications and the other for "traction" applications, each
supplemented with the relevant symbol (see paragraphs 2.26. and 2.27.
above) as follows:

3.1.6. The supplementary service description, if applicable.

3.1.7. The inscription "DEEP" (or "R-2" or "LS-3" or "HF-3" or "HF-4") in the case
of a special tread tyre;
3.1.7.1. "DEEP" and "R-2" identify special tread tyres for tractor drive wheels.
3.1.8. The inscriptions "F-1" or "F-2" or “F-3” in the case of a tractor steering
wheel tyre that is not already marked as per paragraph 2.18.6. above;
3.1.9. The inscriptions "LS-1", "LS-2", "LS-3" or "LS-4" in the case of log-skidder
tyres for forestry machines.
3.1.9.1. "LS-3" identifies special tread tyres.
3.1.9.2. The inscription 'I-3' for implement tyres with traction tread as identified in
Annex 5, Tables 5 and 6.
3.1.10. The inscription "IMPLEMENT" in the case of an implement tyre that is not
already marked as per paragraph 2.18.5. above;
3.1.11. The word "TUBELESS" if the tyre is designed for use without an inner tube;
3.1.12. The inscription "... bar MAX." (or "… kPa MAX") inside the pictogram
shown in Annex 11, to notify the cold inflation pressure that shall not be
exceeded for bead seating during tyre mounting.

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3.1.13. The inscription "R-3" for tractor drive wheel tyres with shallow tread as
identified in Annex 5, Table 2.
3.1.14. The inscription "R-4" in the case of a construction application tyre, identified in
Annex 5, Table 9, that is not already marked as per paragraph 2.18.12. above.
3.1.15. The inscriptions "HF-1", "HF-2", "HF-3", or "HF-4" in the case of high-
flotation tyres for tractor drive wheels or forestry machines listed in Annex 5
Table 7.
3.1.15.1. "HF-3" and "HF-4" identify special tread tyres.
3.1.16. An indication, in kPa, of the inflation pressure to be adopted for
measurements (as specified in Annex 6 paragraph 1) and for the tyre
resistance to bursting (as specified in Annex 8 paragraph 2.1) and, if
applicable, the load/speed test (as specified in Annex 9 paragraph 2.3). This
marking shall be preceded by the symbol "@" or the word “at” (e.g. “@ 240
kPa” or “at 240 kPa”) and be placed near the service description, either after
or below.
3.1.16.1. However, this indication shall not be mandatory on any tyre first type
approved before the entry into force of Supplement 16 to this Regulation.
3.2. Tyres submitted for approval shall bear, on one sidewall only, the following:
3.2.1. The date of manufacture in the form of a group of four digits, the first two
showing the week and the last two the year of manufacture
3.2.2. A free space sufficiently large to accommodate an approval mark as shown in
Annex 2 to this Regulation.
3.3. All markings shall be clearly and legibly moulded and produced as part of the
process during manufacture. The use of branding or other methods of
marking after completion of the original manufacturing process is not
permitted.
3.4. Annex 3 gives examples of the arrangement of tyre markings.

4. Application for approval

4.1. The application for approval of a type of tyre for agricultural and forestry
services with regard to this Regulation shall be submitted by the tyre
manufacturer or by his duly accredited representative. It shall specify:
4.1.1. The tyre-size designation;
4.1.2. The manufacturer's name;
4.1.2.1. The brand name(s)/trademark(s);
4.1.2.2. The trade description(s)/commercial name(s).
4.1.3. The category of use as defined in paragraph 2.1. of this Regulation;
4.1.4. The structure;
4.1.5. The speed category symbol;
4.1.6. The load-capacity index of the tyre, specifying in case of implement tyres
that for traction (only) and that for trailer application, if applicable;
4.1.7. Whether the tyre is to be fitted with or without an inner tube;
4.1.8. The supplementary service description, if applicable;

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4.1.9. The tyre/rim configuration;

4.1.10. The rim to be used for measurements and the rim to be used for tests;
4.1.11. The rim(s) on which the tyre can be mounted;
4.1.12. The inflation pressure (bar or kPa) for measurements as detailed in paragraph
3.1.16.;
4.1.13. The factor X referred to in paragraph 2.21. or the applicable table of
Annex 5;
4.1.14. The cold inflation pressure that shall not be exceeded for bead seating during
tyre mounting, as specified by the tyre manufacturer for the tyre type;
4.1.15. The test pressure, in kPa (or in bar) as detailed in paragraph 3.1.16..
4.2. On request of the Type Approval Authority, the tyre manufacturer must
also submit a complete technical file for each tyre type containing in
particular sketches or photographs (three copies) to identify the tread
pattern and the envelope of the inflated tyre mounted on the measuring
rim showing the relevant dimensions (see paragraphs 6.1. and 6.2. below)
of the component type submitted for approval. It shall also either contain
the test report issued by an approved test laboratory or be accompanied
by one sample of the tyre type, as requested by the Type Approval
Authority.

5. Approval
5.1. If the type of tyre submitted for approval in pursuance to this Regulation
meets the requirements of paragraph 6. below, approval of that type of tyre
shall be granted.
5.2. An approval number shall be assigned to each type approved. Its first two
digits (at present 00, for the Regulation in its original form) shall indicate the
series of amendments incorporating the most recent major technical
amendments made to the Regulation at the time of issue of the approval. The
same Contracting Party shall not assign the same number to another type of
tyre covered by this Regulation.
5.3. Notice of approval or extension or refusal or withdrawal of approval or
production definitively discontinued of a type of tyre pursuant to this
Regulation shall be communicated to the Parties to the 1958 Agreement
which apply this Regulation, by means of a form conforming to the model in
Annex 1 to this Regulation (E/ECE/TRANS/505/Rev.3, Art. 5).
5.4. There shall be affixed, conspicuously, to every tyre conforming to a type of
tyre approved under this Regulation, in the space referred to in
paragraph 3.2.2. above and in addition to the markings prescribed in
paragraphs 3.1. and 3.2. above, an international approval mark consisting
of:

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5.4.1. A circle surrounding the letter "E" followed by the distinguishing number of
the country which has granted approval.2
5.4.2. The number of this Regulation followed by the letter "R", a dash and the type
approval number.
5.5. The approval mark shall be clearly legible and be indelible.
5.6. Annex 2 to this Regulation gives an example of the arrangement of the
approval mark.

6. Requirements
6.1. Section width of a tyre
6.1.1. The section width shall be obtained by means of the following formula:
S = S1 + K (A - A1),
Where:
S is the "section width" rounded to the nearest millimetre related to the
measuring rim;
S1 is "the nominal section width" in mm, as shown on the sidewall of the
tyre in the tyre designation as prescribed;
A is the width (expressed in mm)3 of the measuring rim, as shown by the
manufacturer in the descriptive note;
A1 is the width of the theoretical rim; it is taken to equal S1 multiplied by
the factor X as specified by the tyre manufacturer; and K is taken to equal
0.4.
6.1.2. However, for the types of tyre for which the size designation is given in the
first column of the tables in Annex 5, the theoretical rim width code A1 3 and
the nominal section width S1 are given opposite the tyre size designation in
those tables.
6.2. Outer diameter of a tyre
6.2.1. Except as provided by paragraph 6.2.2., the outer diameter of a tyre is
calculated by the following formula:
D=d+2H
Where:
D is the outer diameter expressed in mm;
d is the conventional number denoting the nominal rim diameter
expressed in mm (see paragraph 2.19.);
H is the nominal section height rounded to the nearest millimetre and is
equal to:
H = 0.01 • Ra • S1

2 The distinguishing numbers of the Contracting Parties to the 1958 Agreement are reproduced in
Annex 3 to the Consolidated Resolution on the Construction of Vehicles (R.E.3), document
ECE/TRANS/WP.29/78/Rev.6 -
www.unece.org/trans/main/wp29/wp29wgs/wp29gen/wp29resolutions.html
3 Conversion factor from code to mm is 25.4.

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Where:
Ra is the nominal aspect ratio;
S1 is the "nominal section width" in mm.
All as shown on the sidewall of the tyre in the tyre-size designation in
conformity with the requirements of paragraph 2.18.
6.2.2. However, for the types of tyres for which the size designation is given in the
first column of the tables of Annex 5 the outer diameter D and the nominal
rim diameter (d) expressed in mm are given opposite the tyre size designation
in those tables.
6.3. Tyre section width: specification of tolerances
6.3.1. The overall width of a tyre may be less than the section width determined
pursuant to paragraph 6.1., or shown in Annex 5;
6.3.2. The overall width of a tyre may not exceed the section width determined
pursuant to paragraph 6.1. by more than the following:
Radial construction: +5 per cent
Diagonal (bias) construction: +8 per cent
Calculated value to be rounded to the nearest mm;
6.3.3. However, for the types of tyre for which the size designation is given in the
first column of the tables in Annex 5, the allowed percentages are those given
in the relevant tables, if any.
6.4. Tyre outer diameter: specification of tolerances
6.4.1. The outer diameter of a tyre must not be outside the values D min and D max
obtained from the following formulae:
D min = d + 2 • Hmin
D max = d + 2 • Hmax
Where
Hmin = H • a , rounded to the nearest mm
Hmax = H • b , rounded to the nearest mm
"H" and "d" are as defined in paragraph 6.2.1.
Coefficients "a" and "b" are specified in paragraph 6.4.2.
6.4.1.1. For sizes listed in Annex 5: H = 0,5 (D - d)
(for references see paragraph 6.2. above).
6.4.2. Coefficients "a" and "b" are respectively:

Category of use Radial Diagonal (bias)

a b a b

Steering wheels 0,96 1,04 0,96 1,07

Tractor drive wheels and forestry 0,96 1,04 0,96 1,07
machines - normal
Tractor drive wheels and forestry 1,00 1,12 1,00 1,12
machines – special
Implement 0,96 1,04 0,96 1,07
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Construction Applications 0,96 1,04 0,97 1,07

7. Modification of tyre type and extension of approval

7.1. Every modification of a tyre type shall be notified to the Type Approval
Authority which approved the tyre type. That authority may then either:
7.1.1. Consider that the modifications made are unlikely to have an appreciable
adverse effect and that in any case the tyre still meet the requirements; or
7.1.2. Require a further test report from the Technical Service responsible for
carrying out the tests.
7.2. A modification of the tread pattern of the tyre shall not be considered to
necessitate a repetition of the tests prescribed in paragraph 6. of this
Regulation.
7.3. Confirmation or refusal of approval, specifying the alterations, shall be
communicated by the procedure specified in paragraph 5.3. above to the
Parties to the Agreement which apply this Regulation.
7.4. The Type Approval Authority issuing the extension of approval shall assign a
series number for such an extension and inform thereof the other Parties to
the 1958 Agreement applying this Regulation by means of a communication
form conforming to the model in Annex 1 to this Regulation.

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8. Conformity of production
The conformity of production procedures shall comply with those set out in
the Agreement, Schedule 1 (E/ECE/TRANS/505/Rev.3), with the following
requirements:
8.1. The tyres approved under this Regulation shall be so manufactured as to
conform to the type approved by meeting the requirements set forth in
paragraph 6. above.
8.2. The Type Approval Authority which has granted type approval may at any
time verify the conformity control methods applied in each production
facility. For each production facility, the normal frequency of these
verifications shall be once every two years.

9. Penalties for non-conformity of production

9.1. The approval granted in respect of a type of tyre pursuant to this Regulation
may be withdrawn if the requirement laid down in paragraph 8.1. above is
not complied with or if the tyres taken from the series have failed to pass the
tests prescribed in that paragraph.
9.2. If a Party to the Agreement which applies this Regulation withdraws an
approval it has previously granted, it shall forthwith so notify the other
Contracting Parties which apply this Regulation, by means of a
communication form conforming to the model in Annex 1 to this
Regulation.

10. Production definitively discontinued

If the holder of an approval completely ceases to manufacture a type of tyre
approved in accordance with this Regulation, he shall so inform the Type
Approval Authority which granted the approval. Upon receiving the
relevant communication that Authority shall inform thereof the other
Parties to the Agreement which apply this Regulation by means of a
communication form conforming to the model in Annex 1 to this
Regulation.

11. Names and addresses of Technical Services

responsible for conducting approval tests, of test
laboratories, and of Type Approval Authorities
11.1. The Contracting Parties to the 1958 Agreement which apply this Regulation
shall communicate to the United Nations Secretariat the names and addresses
of the Technical Services responsible for conducting approval tests and,
where applicable, of the approved test laboratories and of the Type Approval
Authorities which grant approval and to which forms certifying approval, or
extension of approval, or refusal of approval or withdrawal of approval or
production definitively discontinued, issued in other countries, are to be sent.
11.2. The Contracting Parties to the 1958 Agreement which apply this Regulation
may designate laboratories of tyre manufacturers as approved test
laboratories.

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11.3. Where a Contracting Party to the 1958 Agreement applies paragraph 11.2.
above, it may, if it so desires, be represented at the tests by one or more
persons of its choice.

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Explanatory figure
Type cross section

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Annex 1

Annex 1

Communication
(Maximum format: A4 (210 x 297 mm))

issued by : Name of
administration:
..............................
........
..............................
1
........
concerning:2 Approval granted ..............................
Approval extended ........
Approval refused
Approval withdrawn
Production definitively discontinued

of a type of tyre for motor vehicles pursuant to UN Regulation No. 106

Approval No.: …………………......... Extension No. : ………………….........

1. Manufacturer's name and address: ................................................................................

2. Tyre type designation3...................................................................................................
2.1. Brand name(s)/trademark(s): ........................................................................................
2.2. Trade description(s)/ Commercial name(s): .................................................................
3. If applicable, name and address of manufacturer's representative: ..............................
......................................................................................................................................
4. Summarized description: ..............................................................................................
4.1. Size of tyre: ...................................................................................................................
4.2. Category of use: ............................................................................................................
4.3. Structure: diagonal or bias-ply/bias belted/radial2
4.4. Speed category symbol: ................................................................................................
4.5. Load-capacity index: .....................................................................................................
4.5.1. For traction (implement only): ......................................................................................
4.5.2. For trailer (implement only): .........................................................................................
4.6. Whether the tyre is to be fitted with or without an inner tube .......................................

1 Distinguishing number of the country which has granted/extended/refused/withdrawn approval (see

approval provisions in the Regulation).
2 Strike out what does not apply.
3 A list of brand name(s)/trademark(s) or Trade description(s)/ Commercial name(s) may be annexed to
this communication.

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Annex 1
......................................................................................................................................
4.7. The supplementary service description, if applicable: ..................................................
......................................................................................................................................
5. Technical Service and, where applicable, test laboratory approved for purposes
of approval or of verification of conformity: ................................................................
6. Date of report issued by that Service: ...........................................................................
7. Number of report issued by that Service: .....................................................................
8. Reason(s) of extension (if applicable): .........................................................................
9. Any remarks: .................................................................................................................
......................................................................................................................................
10. Place:.............................................................................................................................
11. Date: ..............................................................................................................................
12. Signature: ......................................................................................................................
13. Annexed to this communication is a list of documents in the approval file deposited
at the Type Approval Authorities having delivered the approval and which can be
obtained upon request

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Annex 2

Annex 2

Arrangement of approval mark

a = 12 mm min

The above approval mark affixed to a tyre shows that the type of tyre concerned has
been approved in the Netherlands (E 4) pursuant to UN Regulation No. 106 under approval
number 002439. The first two digits of the approval number indicate that the approval was
granted in accordance with the requirements of UN Regulation No. 106 in its original form.
Note: The approval number must be placed close to the circle and either above or below
the "E" or to the left or right of that letter. The digits of the approval number must be on the
same side of the "E" and face in the same direction. The use of Roman numerals as
approval numbers should be avoided so as to prevent any confusion with other symbols.

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Annex 3

Arrangement of tyre markings

(See paragraphs 3.1. and 3.2. of this Regulation)

Part A: Drive wheel tyres for agricultural tractors

Example of the markings to be borne by types of tyres complying with this Regulation

Minimum heights of markings (mm)

Tyres of rim diameter code

Tyres of nominal section width (mm)
Up to 12 13 to 19.5 20 and above

up to 130 b=4 b=6 b=9

c=4 c=4 c=4
135 to 235 b=6 b=6 b=9
c=4 c=4 c=4
240 and above b=9 b=9 b=9
c=4 c=4 c=4

These markings define a drive wheel tyre:

(a) Having a nominal section width of 360;
(b) Having a nominal aspect ratio of 70;
(c) Of radial ply structure (R);
(d) Having a nominal rim diameter of 610 for which the code is 24;
(e) Having a load capacity of 1250 kg, corresponding to load index 116 in
Annex 4;
(f) Classified in the speed category A8 (reference speed 40 km/h);
(g) Allowed to be used additionally at 50 km/h (speed category symbol B)
with a load, capacity of 1150 kg corresponding to the load capacity
index 113 shown in Annex 4;
(h) For fitting without an inner tube ("tubeless");
(i) Having a special tread ("R-2");
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(j) Manufactured during the twenty-fifth week of the year 2006 (see
paragraph 3.2. of this Regulation);
(k) Requiring to be inflated to 240 kPa for measurements and tyre
resistance to burst and, if applicable, load/speed test.
The positioning and order of the markings constituting the tyre designation
are as follows:
(a) The size designation, comprising the prefix (if any), the nominal
section width, the nominal aspect ratio, the type-of-structure symbol
(where applicable) and the nominal rim diameter, must be grouped as
shown in the examples:
360/70 R 24, IF 360/70 R 24, VF 360/70 R 24, IF 800/65 R 32 CFO,
800/70 R 24 CHO;
(b) The service description (load index and the speed category symbol) is
placed near the size designation. It may either precede or follow it or
be placed above or below it;
(c) The symbols "TUBELESS", "R-2" or "DEEP", the optional word
"RADIAL" and the date of production may be at a distance from the
size designation;
(d) The marking of the additional service description inside the circle may
show either the speed category symbol after or below the load index;
(e) The inflation pressure to be used for measurement and tests is placed
near the service description. It may either follow or be placed below it.

Part B: Steering wheel tyres for agricultural and forestry tractors

Example of the markings to be borne by types of tyres complying with this Regulation

Minimum heights of markings (mm)

Tyres of rim diameter code

Tyres of nominal section width (mm)
Up to 12 13 to 19.5 20 and above

up to 130 b=4 b=6 b=9

c=4 c=4 c=4
135 to 235 b=6 b=6 b=9
c=4 c=4 c=4
240 and above b=9 b=9 b=9
c=4 c=4 c=4
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These markings define a steering wheel tyre:

(a) Having a nominal section width of 250;
(b) Having a nominal aspect ratio of 70;
(c) Of radial-ply structure (R);
(d) Having a nominal rim diameter of 405 mm, for which the code is 16,
designed for the equipment of non-driven steering axles of agricultural
tractors (FRONT);
(e) Having load capacities of 925 kg, corresponding to the load capacity
index 105 shown in Annex 4;
(f) Classified in the nominal speed category A6 (reference speed
30 km/h);
(g) For fitting without an inner tube "tubeless";
(h) Manufactured during the twenty-fifth week of the year 2006 (see
paragraph 3.2. of this Regulation);
(i) Requiring to be inflated to 240 kPa for measurements and tyre
resistance to burst.
The positioning and order of the markings constituting the tyre designation
are as follows:
(a) The size designation, comprising the nominal section width, the
nominal aspect ratio, the type-of-structure symbol (where applicable),
the nominal rim diameter and, optionally the letters "FRONT", must
be grouped as shown in the above example: 250/70 R 16 FRONT;
(b) The service description (the load index and the speed category
symbol) is placed together near the size designation. It may either
precede or follow it or be placed above or below it;
(c) The symbol "TUBELESS", the optional word "RADIAL", the
optional symbol "F-1", and the date of manufacture may be at a
distance from the size designation;
(d) The inflation pressure to be used for measurement and tests is placed
near the service description. It may either follow or be placed below it.

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Part C: Implement tyres

Example of the markings to be borne by types of tyres complying with this Regulation

Minimum heights of markings (mm)

Tyres of rim diameter code

Tyres of nominal section width (mm)
Up to 12 13 to 19.5 20 and above

up to 130 b=4 b=6 b=9

c=4 c=4 c=4
d=7 d = 12 d = 12
135 to 235 b=6 b=6 b=9
c=4 c=4 c=4
d = 12 d = 12 d = 12
240 and above b=9 b=9 b=9
c=4 c=4 c=4
d = 12 d = 12 d = 12

These markings define an implement tyre:

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(g) Having load capacities of 1,000 kg when used on non-driven axles

(trailer application) corresponding to the load capacity index 108
shown in Annex 4, as identified by the appropriate symbol;
(h) Both applications being classified in the nominal speed category A6
(reference speed 30 km/h);
(i) For fitting without an inner tube "tubeless";
(j) Manufactured during the twenty-fifth week of the year 2006 (see
paragraph 3.2. of the Regulation);
(k) Requiring to be inflated to 240 kPa for measurements and tyre
resistance to burst and, if applicable, load/speed test.
The positioning and order of the markings constituting the tyre designation
are as follows:
(a) The size designation, comprising the nominal section width, the
nominal aspect ratio, the type-of-structure symbol (where applicable),
the nominal rim diameter and optionally the letters 'IMP' must be
grouped as shown in the above example: 250/70 R 20 IMP;
(b) The service description (the load index and the speed category
symbol) and the relevant type of application symbol are placed
together near the size designation. They may either precede or follow
it or be placed above or below it;
(c) The symbol "TUBELESS", I-3 if any, the optional word "RADIAL",
the optional word "IMPLEMENT" and the date of manufacture may
be at a distance from the size designation;
(d) The inflation pressure to be used for measurement and tests is placed
near the service description. It may either follow or be placed below it.

Part D: Tyres for forestry machines

Example of the markings to be borne by types of tyres complying with this Regulation

↓ ↓ ↓ ↓
600/55 – 26.5 b LS-2 b 154 A8 b @ 240 kPa c
↑ ↑ ↑ ↑
↓ ↓
TUBELESS c 2506 c
↑ ↑
Minimum heights of markings: b: 9 mm c: 4 mm
These markings define a tyre for forestry machines:
(a) Having a nominal section width of 600;
(b) Having a nominal aspect ratio of 55;
(c) Of diagonal ply structure (-);
(d) Having a nominal rim diameter of 673 mm for which the code is 26.5;
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(e) Having an intermediate tread ("LS-2");

(f) Having a load capacity of 3750 kg, corresponding to load index 154 in
Annex 4;
(g) Classified in the speed category A8 (reference speed 40 km/h);
(h) For fitting without an inner tube ("tubeless");
(i) Manufactured during the twenty-fifth week of the year 2006 (see
paragraph 3.2. of this Regulation);
(j) Requiring to be inflated to 240 kPa for measurements and tyre
resistance to burst.
The positioning and order of the markings constituting the tyre designation
are as follows:
(a) The size designation, comprising the nominal section width, the
nominal aspect ratio, the type of structure symbol (where applicable)
and the nominal rim diameter, must be grouped as shown in the above
example: 600/55 – 26.5;
(b) The inscription "LS-n" (or "HF-n" in the case of high-flotation tyres)
is placed after the size designation, where n is the number pertaining
to the appropriate classification code as defined in Annex 10 (e.g.
"LS-2" in the example above);
(c) The service description (load index and the speed category symbol) is
placed near the size designation. It may either precede or follow it or
be placed above or below it;
(d) The symbols "TUBELESS" and the date of production may be at a
distance from the size designation;
(e) The inflation pressure to be used for measurement and tests is placed
near the service description. It may either follow or be placed below it.

Part E: Tyres for construction applications (industrial tractors)

Example of the markings to be borne by types of tyres complying with this Regulation
b 400/80 – 24 IND b b 156 A8 b b 153 B b c @ 240 kPa c
c TUBELESS c c 2513 c
Minimum heights of markings:
b: 9 mm c: 4 mm
These markings define a tyre for construction applications (IND):
(a) Having a nominal section width of 400;
(b) Having a nominal aspect ratio of 80;
(c) Of diagonal ply structure (-);
(d) Having a nominal rim diameter of 610 mm for which the code is 24;
(e) Having a load capacity of 4000 kg, corresponding to load index 156 in
Annex 4;
(f) Classified in the speed category A8 (reference speed 40 km/h) ;

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(g) Allowed to be used additionally at 50 km/h (speed category symbol B)

with a load, capacity of 3650 kg corresponding to the load capacity
index 153 shown in Annex 4;
(h) For fitting without an inner tube ("TUBELESS");
(i) Manufactured during the twenty-fifth week of the year 2013 (see
paragraph 3.2. of the Regulation);
(j) Requiring to be inflated to 240 kPa for measurements and tyre
resistance to burst and, if applicable, load/speed test.
The positioning and order of the markings constituting the tyre designation
are as follows:
(a) The size designation, comprising the nominal section width, the
nominal aspect ratio, the type of structure symbol, the nominal rim
diameter and the suffix IND, must be grouped as shown in the above
example: 400/80 – 24 IND;
(b) The service description (load index and the speed category symbol) is
placed near the size designation. It may either precede or follow it or
be placed above or below it;
(c) The symbols "TUBELESS', "R-4" if applicable, and the date of
production may be at a distance from the size designation";
(d) The marking of the additional Service Description inside the circle, if
any, may show either the speed category symbol after or below the
load index;

(e) The inflation pressure to be used for measurement and tests is placed
near the service description. It may either follow or be placed below
it.

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Annex 4

List of load capacity indices (LI) and corresponding

maximum mass to be carried (kg)
(See paragraph 2.28. of this Regulation)

LI kg LI kg LI kg LI kg LI kg LI kg LI kg
0 45 40 140 80 450 120 1 400 160 4 500 200 14 000 240 45 000
1 46.2 41 145 81 462 121 1 450 161 4 625 201 14 500 241 46 250
2 47.5 42 150 82 475 122 1 500 162 4 750 202 15 000 242 47 500
3 48.7 43 155 83 487 123 1 550 163 4 875 203 15 500 243 48 750
4 50 44 160 84 500 124 1 600 164 5 000 204 16 000 244 50 000
5 51.5 45 165 85 515 125 1 650 165 5 150 205 16 500 245 51 500
6 53 46 170 86 530 126 1 700 166 5 300 206 17 000 246 53 000
7 54.5 47 175 87 545 127 1 750 167 5 450 207 17 500 247 54 500
8 56 48 180 88 560 128 1 800 168 5 600 208 18 000 248 56 000
9 58 49 185 89 580 129 1 850 169 5 800 209 18 500 249 58 000
10 60 50 190 90 600 130 1 900 170 6 000 210 19 000 250 60 000
11 61.5 51 195 91 615 131 1 950 171 6 150 211 19 500 251 61 500
12 63 52 200 92 630 132 2 000 172 6 300 212 20 000 252 63 000
13 65 53 206 93 650 133 2 060 173 6 500 213 20 600 253 65 000
14 67 54 212 94 670 134 2 120 174 6 700 214 21 200 254 67 000
15 69 55 218 95 690 135 2 180 175 6 900 215 21 800 255 69 000
16 71 56 224 96 710 136 2 240 176 7 100 216 22 400 256 71 000
17 73 57 230 97 730 137 2 300 177 7 300 217 23 000 257 73 000
18 75 58 236 98 750 138 2 360 178 7 500 218 23 600 258 75 000
19 77.5 59 243 99 775 139 2 430 179 7 750 219 24 300 259 77 500
20 80 60 250 100 800 140 2 500 180 8 000 220 25 000 260 80 000
21 82.5 61 257 101 825 141 2 575 181 8 250 221 25 750 261 82 500
22 85 62 265 102 850 142 2 650 182 8 500 222 26 500 262 85 000
23 87.5 63 272 103 875 143 2 725 183 8 750 223 27 250 263 87 500
24 90 64 280 104 900 144 2 800 184 9 000 224 28 000 264 90 000
25 92.5 65 290 105 925 145 2 900 185 9 250 225 29 000 265 92 500
26 95 66 300 106 950 146 3 000 186 9 500 226 30 000 266 95 000
27 97.5 67 307 107 975 147 3 075 187 9 750 227 30 750 267 97 500
28 100 68 315 108 1 000 148 3 150 188 10 000 228 31 500 268 100 000
29 103 69 325 109 1 030 149 3 250 189 10 300 229 32 500 269 103 000
30 106 70 335 110 1 060 150 3 350 190 10 600 230 33 500 270 106 000
31 109 71 345 111 1 090 151 3 450 191 10 900 231 34 500 271 109 000
32 112 72 355 112 1 120 152 3 550 192 11 200 232 35 500 272 112 000
33 115 73 365 113 1 150 153 3 650 193 11 500 233 36 500 273 115 000
34 118 74 375 114 1 180 154 3 750 194 11 800 234 37 500 274 118 000
35 121 75 387 115 1 215 155 3 875 195 12 150 235 38 750 275 121 500
36 125 76 400 116 1 250 156 4 000 196 12 500 236 40 000 276 125 000
37 128 77 412 117 1 285 157 4 125 197 12 850 237 41 250 277 128 500
38 132 78 425 118 1 320 158 4 250 198 13 200 238 42 500 278 132 000
39 136 79 437 119 1 360 159 4 375 199 13 600 239 43 750 279 136 000

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Annex 5

Theoretical rim, outer diameter and nominal section width of

tyres of certain size designations
Table 1 (1 of 2)
Agricultural steering wheels - Normal and low Section sizes

Tyre size Theoretical rim Nominal width Overall diameter (D) (mm) Nominal width
designation width code (A1) (S1) (mm) (*) (d) (mm)

4.00 - 9 3 112 460 - 229

4.00 - 12 3 112 535 526 305
4.00 - 15 3 112 610 602 381
4.00 - 16 3 112 630 - 406
4.00 - 19 3 112 712 704 483
4.50 - 10 3 121 505 - 254
4.50 - 16 3 122 655 - 406
4.50 - 19 3 122 736 - 483
5.00 - 10 3 130 530 - 254
5.00 - 12 3 130 580 - 305
5.00 - 15 4 140 655 649 381
5.00 - 16 4 140 680 - 406
5.50 - 16 4 150 710 694 406
6.00 - 14 5 169 688 669 356
6.00 - 16 4,5 165 735 720 406
6.00 - 18 4 160 790 - 457
6.00 - 19 4,5 165 814 796 483
6.00 - 20 4,5 165 840 - 508
6.50 - 10 4,5 175 608 - 254
6.50 - 16 4,5 175 760 739 406
6.50 - 20 4,5 175 865 - 508
7.50 - 16 5,5 205 805 782 406
7.50 - 18 5,5 205 860 833 457
7.50 - 20 5,5 205 915 883 508
8.00 - 16 5,5 211 813 813 406
9.00 - 16 6 234 855 827 406
9.50 - 20 7 254 978 - 508
10.00 - 16 8 274 895 - 406
11.00 - 16 10 315 965 935 406
11.00 - 24 10 315 1 170 1138 610

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Table 1 (2 of 2)
Agricultural steering wheels - Normal and low section sizes

Tyre size Theoretical rim Nominal width Overall diameter (D) (mm) Nominal width
designation width code (A1) (S1) (mm) (*) (d) (mm)

Low Section
7.5L - 15 6 210 745 - 381
8.25/85 - 15 6 210 745 - 381
9.5L - 15 8 240 785 - 381
9.5/85 - 15 8 240 785 - 381
11L - 15 8 280 815 783 381
11.5/75 - 15 8 280 815 - 381
7.5L - 16 6 208 746 - 406
11L - 16 8 279 840 808 406
11.5/80 - 15.3 9 290 845 - 389
14L - 16.1 11 360 985 950 409
14.0/80 - 16.1 11 360 985 - 409
14.5/75 - 16.1 11 373 940 904 409
16.5L - 16.1 14 419 1 072 1031 409

Notes:
1. Agricultural steering wheels tyres are identified either by suffix "Front"
placed after the Tyre size designation (e.g. 4.00 - 9 Front) or by one of the
following additional markings added to the Tyre sidewalls: "F-1", "F-2" or
"F-3".
2. Tyres of radial structure are identified by means of the letter "R" in place of " - "
(e.g. 4.00R9).
3. Overall diameters (D) in column (*) apply to tyres for industrial service (construction
applications) marked with classification code "F-3" – see paragraph 3.1.8 of this
Regulation. These tyres may be marked with the suffix "IND" instead of "Front".
4. For diagonal tyres marked on the tyre sidewall with classification code "F-1" (see
paragraph 3.1.8. of this regulation), the overall diameter (D) is to be increased by 12 mm.

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4.00-7 3 - 112 - 410 178

4.00-8 3 - 112 - 435 203
4.00-9 3 - 112 - 460 229
4.00-10 3 - 112 - 485 254
4.00-12 3 - 112 - 535 305
4.00-18 3 - 112 - 690 457
4.50-10 3 - 121 - 505 254
5.0 -10 4 - 135 - 505 254
5.00-10 3 - 130 - 530 254
5.00-12 4 - 145 - 580 305
5.00-15 4 - 145 - 645 381
6.00-12 4 - 160 - 635 305
6.00-16 4 - 160 - 735 406
6.5-15 5 - 167 - 685 381
6.50-16 5 - 175 - 760 406
7.00-16 6 - 183 - 742 406
7.00-18 6 - 183 - 792 457
7.50-16 5,5 205 - 805 - 406
7.50-18 5,5 205 205 880 860 457
8.00-20 6 - 220 - 965 508
5-12 4 - 127 - 545 305
5-14 4 - 127 - 595 356
5-26 4 - 127 - 900 660
6-10 5 - 157 - 550 254
6-12 5 - 157 - 600 305
6-14 5 - 157 - 650 356
7-14 5 - 173 - 690 356
7-16 6 - 183 - 740 406
8-16 6 - 201 - 790 406
8-18 7 - 211 - 840 457
7.2-20 6 - 183 - 845 508
7.2-24 6 - 183 - 945 610
7.2-30 6 - 183 - 1 095 762
7.2-36 6 - 183 - 1 250 914
7.2-40 6 - 183 - 1 350 1 016
8.3-16 7 - 211 - 790 406

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Table 2 (2 of 5)
Drive wheel tyres for agricultural tractors - Normal section sizes

Nominal section Overall diameter (D)

Nominal rim
Tyre size Theoretical rim width (S1) (mm) (mm)
diameter (d)
designation width code (A1)
(mm)
Radial Diagonal Radial Diagonal (*)

8.3-20 7 - 211 - 890 508

8.3-22 7 - 211 - 940 559
8.3-24 7 211 211 985 995 610
8.3-26 7 - 211 - 1 045 660
8.3-28 7 - 211 - 1 095 711
8.3-32 7 211 211 1 190 1 195 813
8.3-36 7 211 211 1 290 1 300 914
8.3-38 7 - 211 - 1 350 965
8.3-42 7 211 211 1 440 1 450 1 067
8.3-44 7 211 211 1 495 1 500 1 118
9.5-16 8 - 241 - 845 406
9.5-18 8 - 241 - 895 457
9.5-20 8 241 241 940 945 508
9.5-22 8 - 241 - 995 559
9.5-24 8 241 241 1 040 1 050 610
9.5-26 8 - 241 - 1 100 660
9.5-28 8 241 - 1 140 - 711
9.5-32 8 - 241 - 1 250 813
9.5-36 8 241 241 1 345 1 355 914
9.5-38 8 - 241 - 1 405 965
9.5-42 8 - 241 - 1 505 1 067
9.5-44 8 241 241 1 550 1 555 1 118
9.5-48 8 241 241 1 650 1 655 1 219

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Table 2 (3 of 5)
Drive wheel tyres for agricultural tractors - Normal section sizes

Nominal section Overall diameter (D)

Nominal rim
Tyre size Theoretical rim width (S1) (mm) (mm)
diameter (d)
designation width code (A1)
(mm)
Radial Diagonal Radial Diagonal (*)

11.2-18 10 - 284 - 955 457

11.2-20 10 284 284 995 1 005 508
11.2-24 10 284 284 1 095 1 105 610
11.2-26 10 - 284 - 1 155 660
11.2-28 10 284 284 1 200 1 205 711
11.2-36 10 284 284 1 400 1 410 914
11.2-38 10 284 284 1 455 1 460 965
11.2-42 10 284 - 1 555 - 1 067
11.2-44 10 284 - 1 610 - 1 118
11.2-48 10 284 - 1 710 - 1 219
12.4-16 11 - 315 - 956 406
12.4-20 11 315 - 1 045 - 508
12.4-24 11 315 315 1 145 1 160 610
12.4-26 11 - 315 - 1 210 660
12.4-28 11 315 315 1 250 1 260 711
12.4-30 11 - 315 - 1 310 762
12.4-32 11 315 315 1 350 1 360 813
12.4-36 11 315 315 1 450 1 465 914
12.4-38 11 315 315 1 500 1 515 965
12.4-42 11 - 315 - 1 615 1 067
12.4-46 11 315 - 1 705 - 1 168
12.4-52 11 315 - 1 860 - 1 321
13.6-16 12 - 345 - 1 005 406
13.6-24 12 345 345 1 190 1 210 610
13.6-26 12 345 345 1 260 1 260 660
13.6-28 12 345 345 1 295 1 310 711
13.6-36 12 345 345 1 500 1 515 914
13.6-38 12 345 345 1 550 1 565 965
13.6-46 12 - 345 - 1 768 1 168
13.6-48 12 345 - 1 805 - 1 219
13.9-36 12 - 353 - 1 478 965
14.9/80-24 12 - 368 - 1 215 610
14.9-20 13 - 378 - 1 165 508
14.9-24 13 378 378 1 245 1 265 610
14.9-26 13 378 378 1 295 1 315 660
14.9-28 13 378 378 1 350 1 365 711
14.9-30 13 378 378 1 400 1 415 762

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Table 2 (4 of 5)
Drive wheel tyres for agricultural tractors - Normal section sizes

Nominal section Overall diameter (D)

Nominal rim
Tyre size Theoretical rim width (S1) (mm) (mm)
diameter (d)
designation width code (A1)
(mm)
Radial Diagonal Radial Diagonal (*)

14.9-38 13 378 378 1 600 1 615 965

14.9-46 13 378 - 1 824 - 1 168
15.5-38 14 394 394 1 565 1 570 965
16.9-24 15 429 429 1 320 1 335 610
16.9-26 15 429 429 1 370 1 385 660
16.9-28 15 429 429 1 420 1 435 711
16.9-30 15 429 429 1 475 1 485 762
16.9-34 15 429 429 1 575 1 585 864
16.9-38 15 429 429 1 675 1 690 965
16.9-42 15 429 - 1 775 - 1 067
18.4-16.1 16 - 467 - 1 137 409
18.4-24 16 467 467 1 395 1 400 610
18.4-26 16 467 467 1 440 1 450 660
18.4-28 16 467 467 1 490 1 501 711
18.4-30 16 467 467 1 545 1 550 762
18.4-34 16 467 467 1 645 1 650 864
18.4-38 16 467 467 1 750 1 750 965
18.4-42 16 467 467 1 850 1 850 1 067
18.4-46 16 467 - 1 958 - 1 168

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Table 2 (5 of 5)
Drive wheel tyres for agricultural tractors - Normal and low section sizes

Nominal section Overall diameter (D)

Nominal rim
Tyre size Theoretical rim width (S1) (mm) (mm)
diameter (d)
designation width code (A1)
(mm)
Radial Diagonal Radial Diagonal (*)

20.8-34 18 528 528 1 735 1 735 864

20.8-38 18 528 528 1 835 1 835 965
20.8-42 18 528 528 1 935 1 935 1 067
23.1-26 20 587 587 1 605 1 605 660
23.1-30 20 587 587 1 700 1 705 762
23.1-34 20 587 587 1 800 1 805 864
24.5-32 21 622 622 1 800 1 805 813
Low section height
7.5L-15 6 - 210 - 745 381
14.9LR-20 13 378 - 1 100 - 508
17.5L-24 15 445 445 1 241 1 265 610
19.5L-24 17 495 495 1 314 1 339 610
21L-24 18 - 533 - 1 402 610
28.1-26 25 - 714 - 1 615 660
28L-26 25 719 714 1 607 1 615 660
30.5L-32 27 775 775 1 820 1 820 813
35.5L-32 31 - 902 - 1981 813
Notes:
1. The Tyre size designation may be supplemented by a rim contour prefix: ex: VA35.5L-32
instead of 35.5L-32.
2. Tyres of radial structure are identified by means of the letter "R" in place of " - "
(e.g. 23.1R26).
3. Coefficient for the calculation of the overall width: +8 per cent.
(*) For Diagonal tyres marked on the tyre sidewall with classification code "R-3" (see
paragraph 3.1.14. of this regulation) the overall diameter (D) is to be reduced by 24
mm.

35
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E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.6
Annex 5

Table 3
Drive wheel tyres for agricultural tractors - Low section series

Nominal rim
Tyre size Theoretical rim Nominal section Overall diameter
diameter (d)
designation width code (A1) width (S1) (mm) (D) (mm)
(mm)

11.2/78-28 10 296 1 180 711

12.4/78-28 11 327 1 240 711
12.4/78-36 11 327 1 440 914
13.6/78-28 12 367 1 285 711
13.6/78-36 12 367 1 490 914
14.9/78-28 13 400 1 345 711
16.9/78-28 15 452 1 410 711
16.9/78-30 15 452 1 460 762
16.9/78-34 15 452 1 560 864
16.9/78-38 15 452 1 665 965
18.4/78-30 16 490 1 525 762
18.4/78-38 16 490 1 730 965

36
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E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.6
Annex 5

Table 4
Drive wheel tyres for agricultural tractors - Low section series

Tyre size Theoretical rim Nominal section Overall diameter Nominal rim
designation (1) width code (A1) width (S1) (mm) (D) (mm) diameter (d)(mm)

IF / VF IF / VF
300/70R20 9 - 295 - 952 508
320/70R20 10 - 319 - 982 508
320/70R24 10 - 319 - 1 094 610
320/70R28 10 - 319 - 1 189 711
360/70R20 11 - 357 - 1 042 508
360/70R24 11 - 357 - 1 152 610
360/70R28 11 - 357 - 1 251 711
380/70R20 12 13 380 379 1 082 508
380/70R24 12 13 380 379 1 190 610
380/70R28 12 13 380 379 1 293 711
420/70R24 13 14 418 415 1 248 610
420/70R28 13 14 418 415 1 349 711
420/70R30 13 14 418 415 1 398 762
480/70R24 15 16 479 475 1 316 610
480/70R26 15 16 479 475 1 372 660
480/70R28 15 16 479 475 1 421 711
480/70R30 15 16 479 475 1 478 762
480/70R34 15 16 479 475 1 580 864
480/70R38 15 16 479 475 1 681 965
520/70R26 16 18 516 521 1 456 660
520/70R30 16 18 516 521 1 536 762
520/70R34 16 18 516 521 1 640 864
520/70R38 16 18 516 521 1 749 965
580/70R38 18 20 577 580 1 827 965
(1)"Improved flexion tyres" are identified by means of the letters "IF" added in front of the size
designation (e.g. IF480/70R38) ; "Very high flexion tyres" are identified by means of the letters "VF"
added in front of the size designation (e.g. VF480/70R38) – see paragraphs 2.18.8. and 2.18.9. of this
Regulation.

37
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E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.6
Annex 5

Table 5 (1 of 3)
Agricultural implement tyres - Normal section sizes

Nominal rim
Nominal
Theoretical Overall diameter (D) (mm) diameter (d)
Tyre size section
rim width (mm)
designation width (S1)
code (A1)
(mm) (*)

125 - 15 IMP 3,5 127 590 - 381

140 - 6 IMP 4,5 135 315 - 152
165 - 15 IMP 4,5 167 650 - 381
190-8 IMP 5.50 182 430 - 203
2.50 - 4 IMP 1,75 68 225 - 102
2.75 - 4 IMP 1,75 70 234 - 102
2.50 - 8 IMP 1,5 68 338 - 203
3.00 - 4 IMP 2,5 90 265 - 102
3.00 - 8 IMP 2,5 90 367 - 203
3.00 - 10 IMP 2,5 90 418 - 254
3.25 - 8 IMP 2,10 84 366 - 203
3.25 - 16 IMP 1,85 88 590 - 406
3.50 - 5 IMP 3 95 292 - 127
3.50 - 6 IMP 2,5 100 343 - 152
3.50 - 8 IMP 2,5 100 393 - 203
3.50 - 16 IMP 1,85 92 590 - 406
4.00 - 4 IMP 3 114 313 - 102
4.00 - 5 IMP 3 102 310 - 127
4.00 - 6 IMP 3 114 374 - 152
4.00 – 8 IMP 3 112 418 425 203
4.00 – 9 IMP 3 112 443 460 229
4.0 – 10 IMP 3 114 455 465 254
4.00 – 10 IMP 3 114 465 475 254
4.00 – 12 IMP 3 112 519 536 305
4.00 – 15 IMP 3 112 595 612 381
4.00 - 16 IMP 3 114 618 - 406
4.00 – 18 IMP 3 112 672 688 457
4.00 – 19 IMP 3 114 694 - 483
4.00 - 21 IMP 3 112 765 - 533
4.00/4.50 - 21 IMP 3 110 765 - 533
4.10 - 4 IMP 3,25 102 268 - 102
4.10 - 6 IMP 3,25 102 319 - 152
4.10/3.50-4 IMP 2.10 89 272 - 101
4.50 - 9 IMP 3 124 466 - 229
4.50 - 14 IMP 3 124 593 - 356
4.50 - 16 IMP 3 123 647 - 406
4.50 - 19 IMP 3 124 720 733 483
4.80 – 8 IMP 3,75 121 423 449 203
5.00 - 8 IMP 4 145 467 - 203

38
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E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.6
Annex 5

Table 5 (2 of 3)
Agricultural implement tyres - Normal section sizes

Tyre size Theoretical Nominal Overall diameter (D) (mm) Nominal rim
designation rim width section diameter (d)
code (A1) width (S1) (*) (mm)
(mm)

5.00 - 9 IMP 3,5 141 497 - 229

5.0 – 10 IMP 4 145 505 517 254
5.0 - 12 IMP 4 145 566 - 305
5.00 – 12 IMP 4 145 567 580 305
5.00 – 14 IMP 4 145 618 631 356
5.0 - 15 IMP 4 145 642 - 381
5.00 – 15 IMP 3 130 639 655 381
5.00 - 16 IMP 4 145 669 - 406
5.00/5.25 - 21 IMP 3 136 824 - 533
5.50 – 16 IMP 4 150 685 703 406
5.70 - 12 IMP 4,5 146 570 - 305
5.70 - 15 IMP 4,5 146 647 - 381
5.90 – 15 IMP 4 150 665 681 381
6 - 6 IMP 4 145 425 - 152
6.00 - 9 IMP 4,5 169 543 556 229
6 - 12 IMP 5 145 585 - 305
6.0 - 12 IMP 5 155 569 - 305
6.00 - 12 IMP 5 152 579 - 305
6.00 - 16 IMP 4 158 712 729 406
6.00 - 19 IMP 4,5 169 810 - 483
6.00 - 20 IMP 4,5 169 830 - 508
6.40 - 15 IMP 4,5 163 684 - 381
6.5 - 15 IMP 5 163 674 - 381
6.50 - 10 IMP 5 178 597 - 254
6.50 – 16 IMP 4,5 173 735 754 406
6.50 - 20 IMP 5 176 850 - 508
6.70 – 15 IMP 4,5 182 704 720 381
6.90 - 9 IMP 5,5 175 545 - 229
7.00- 12 IMP 5 187 667 685 305
7.00 - 14 IMP 5 170 691 - 356
7.00 - 15 IMP 5,5 200 744 - 381
7.00 - 16 IMP 5,5 200 769 - 406
7.00 - 18 IMP 5,5 200 820 - 457
7.00 - 19 IMP 5,5 200 845 - 483
7.50 – 10 IMP 6 214 634 649 254
7.50 - 14 IMP 5,5 194 686 - 356
7.50 - 15 IMP 6 215 808 - 381
7.50 – 16 IMP 5,5 202 785 801 406
7.50 – 18 IMP 5,5 202 836 852 457

39
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E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.6
Annex 5

Table 5 (3 of 3)
Agricultural implement tyres - Normal section sizes

Tyre size Theoretical Nominal Overall diameter (D) (mm) Nominal rim
designation rim width section diameter (d)
code (A1) width (S1) (*) (mm)
(mm)

7.50 – 20 IMP 5.5 202 887 903 508

7.50 – 24 IMP 5.5 202 989 1013 610
7.60 – 15 IMP 5.5 193 734 751 381
8 - 16 IMP 6 211 795 - 406
8.00 - 6 IMP 7 203 452 - 152
8.00 - 12 IMP 5 214 710 - 305
8.00 - 16 IMP 6 206 808 - 406
8.00 - 19 IMP 6 214 888 - 483
8.00 - 20 IMP 6 214 945 - 508
8.25 - 15 IMP 6.5 237 835 - 381
8.25 - 16 IMP 6 229 832 - 406
8.25 - 20 IMP 6 229 934 950 508
9.00 - 10 IMP 6 234 696 - 254
9.00 - 13 IMP 5.5 247 814 - 330
9.00 - 15 IMP 5.5 247 850 - 381
9.00 - 16 IMP 6 234 848 - 406
9.00 - 24 IMP 8 272 1 094 - 610
10.00 - 12 IMP 6,5 262 790 - 305
10.00 - 15 IMP 8 274 853 - 381
10.00 - 16 IMP 8 274 895 - 406
10.50 - 16 IMP 6,5 280 955 - 406
11.00 - 12 IMP 6,5 277 835 - 305
11.00 - 16 IMP 6,5 277 937 - 406
11.0 - 20 IMP 9 285 950 - 508
11.25 - 24 IMP 10 325 1 171 - 610
11.25 - 28 IMP 10 325 1 273 - 711
11.5 - 24 IMP 10 305 1 070 - 610
13.50 – 16.1 IMP 11 353 1021 1043 409
14.0 - 24 IMP 12 370 1 170 - 610
15.0 - 24 IMP 13 400 1 210 - 610
15.0 - 28 IMP 13 400 1 310 - 711
17.0 - 28 IMP 15 455 1 390 - 711
17.0 - 30 IMP 15 455 1 440 - 762
18.5 - 34 IMP 16 490 1 600 - 864
20 - 20 IMP 14 520 1 270 - 508

Notes:
1. The suffix "IMP" may be replaced by the wording "IMPLEMENT" on the tyre sidewall.
2. Tyres of radial structure are identified by means of the letter "R" in place of "-" (e.g. 7.5 L R
15).
3. Overall diameters (D) in column (*) apply to tyres marked with classification code "I-3" – see
paragraph 3.1.9.2. of this Regulation.

40
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E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.6
Annex 5

Table 6 (1 of 3)
Agricultural implement and construction applications tyres - Low section sizes

Nominal
Theoretical Overall diameter (D) (mm) Nominal rim
Tyre size section
rim width diameter (d)
designation width (S1)
code (A1) (*) (mm)
(mm)

7.5 L - 15 IMP 6 210 745 - 381

8.5L – 14 IMP 6 216 721 735 356
9.5L – 14 IMP 7 241 741 757 356
9.5L – 15 IMP 7 241 767 782 381
11L – 14 IMP 8 279 752 770 356
11L – 15 IMP 8 279 777 796 381
11L – 16 IMP 8 279 803 821 406
12.5L – 15 IMP 10 318 823 845 381
12.5L – 16 IMP 10 318 848 870 406
14L - 16.1 IMP 11 356 940 - 409
16.5L – 16.1 IMP 14 419 1024 1046 409
19 L - 16.1 IMP 16 483 1 087 - 409
21.5 L - 16.1 IMP 18 546 1 130 1 162 409

41
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E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.6
Annex 5

Table 6 (2 of 3)
Agricultural implement and construction applications tyres - Low section sizes

Overall
Nominal
Theoretical diameter (D) Nominal rim
Tyre size section
rim width (mm) diameter (d)
designation width (S1)
code (A1) (mm)
(mm)
(*)

205/50 - 10 IMP 7 211 450 - 254

19.0/45 - 17 IMP 16 491 866 - 432
15.0/55 - 17 IMP 13 391 850 872 432
10.5/65 - 16 IMP 9 274 755 - 406
11.0/60 - 16 IMP 9 281 742 - 406
11.0/65 - 12 IMP 9 281 670 692 305
13.0/65 - 18 IMP 11 336 890 - 457
13.0/70 - 16 IMP 11 337 890 - 406
14.0/65 - 16 IMP 11 353 870 - 406
9.0/70 - 16 IMP 7 226 725 - 406
11.5/70 - 16 IMP 9 290 815 - 406
11.5/70 - 18 IMP 9 290 865 - 457
15.0/70 - 18 IMP 13 391 990 - 457
16.0/70 - 20 IMP 14 418 1075 1097 508
16.5/70 - 22.5 MP 13 417 1 158 - 572
20.0/70 - 508 IMP 16 508 1 220 - 508
8.0/75 - 15 IMP 6.5 199 710 - 381
9.0/75 – 16 IMP 7 226 749 770 406
10.0/75 - 12 IMP 9 264 685 - 305
10.0 - 15.3 IMP 9 258 785 - 389
10.0/75 - 15.3 IMP 9 264 760 780 389
10.0/75 - 16 IMP 9 264 805 - 406
12.0/75 - 18 IMP 9 299 915 937 457
13.0/75 - 16 IMP 11 336 900 - 406
13.5/75 - 430.9 MP 11 345 945 - 431
14.5/75 - 20 IMP 12 372 1 060 - 508
6.5/80 – 12 IMP 5 163 569 588 305
6.5/80 – 15 IMP 5 163 645 663 381
8.50 - 12 IMP 7 235 715 - 305
10.0/80 – 12 IMP 9 264 710 730 305
10 - 18 IMP 9 260 875 - 457
10.5/80 – 18 IMP 9 274 885 907 457
11.5/80 – 15.3 IMP 9 290 845 867 389
11.5/80 - 15.3 IMP 9 290 845 - 389
12.5/80 - 15.3 IMP 9 307 889 - 389
12.5/80 - 18 IMP 9 308 965 987 457
14.5/80 - 18 IMP 12 372 1060 1082 457

42
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E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.6
Annex 5

Table 6 (3 of 3)
Agricultural implement and construction applications tyres - Low section sizes

Tyre size Theoretical Nominal Overall diameter (D) (mm) Nominal rim
designation rim width section diameter (d)
code (A1) width (S1) (*) (mm)
(mm)

15.5/80 - 24 IMP 13 394 1240 1262 610

17.0/80 - 508 IMP 13 426 1200 - 508
19.5/80 - 20 IMP 16 499 1300 - 508
21.0/80 - 20 IMP 16 525 1362 - 508
5.5/85 - 9 IMP 4 145 475 - 229
10.5/85 - 15.3 IMP 9 274 792 - 389
13.5/85 - 28 IMP 11 345 1293 - 711
16.5/85 - 24 IMP 13 417 1322 1344 610
16.5/85 - 28 IMP 13 417 1423 1445 711
Notes:
1. The suffix "IMP" may be replaced by the wording "IMPLEMENT". In case of tyres marked
with classification code 'I-3' on the tyre sidewall the suffix "IND" may be used in place of
"IMP".
2. Tyres of radial structure are identified by means of the letter "R" in place of " - "
(e.g. 205/50R10).
3. Overall diameters (D) in column (*) apply to tyres marked with classification code "I-3" – see
paragraph 3.1.9.2. of this Regulation.

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Annex 5

Table 7 (1 of 4)
Agricultural high flotation tyres
Theoretical Nominal section Overall Nominal rim
Tyre size
rim width width (S1) diameter (D) diameter (d)
designation
code (A1) (mm) (mm) (mm)
9x3.50 - 4 2.75 91 229 101
11x4.00 - 4 3.25 102 280 101
11x4.00 - 5 3 104 272 127
11x7 - 4 6 185 270 101
12x4.00 - 5 3 112 298 127
13x5.00 - 6 3.5 122 320 152
13x6.00 - 6 5 154 330 152
13x6.00 - 8 5 154 330 203
13x6.50 - 6 5 163 330 152
14x4.50 - 6 3.5 113 356 152
14x5.00 - 6 4 127 347 152
14x6.00 - 6 4.5 157 340 152
15x6.00 - 6 4.5 155 366 152
16x4.50 - 9 3 105 405 229
16x5.50 - 8 4.25 142 414 203
16x6.50 - 8 5.375 165 405 203
16x7.50 - 8 5.375 188 411 203
17x8.00 - 8 7 203 438 203
17x8.00 - 12 7 203 432 305
18x6.50 - 8 5 163 457 203
18x7.00 - 8 5.5 178 450 203
18x7.50-8 6 191 457 203
18x8.50 - 8 7 214 450 203
18x9.50 - 8 7 235 462 203
19x9.50 - 8 7.5 240 483 203
19x7.50 - 8 5.5 180 480 203
19x8.00 - 10 7 203 483 254
19x10.00 - 8 8.5 254 483 203
20x8.00 - 8 6.5 204 508 203
20x8.00 - 10 7 203 500 254
20x9.00 - 8 7 227 508 203
20x10.00 - 8 8 254 508 203
20x10.00 - 10 8.5 254 508 254
20.5x8.00 - 10 6 208 526 254
21x7.00 - 10 5.5 177 533 254
21x8.00 - 10 7 203 525 254
21x11.00 - 8 8.5 282 518 203
21x11.00 - 10 9 279 525 254
22x8.00 - 10 6 196 556 254
22x8.50 - 12 7 216 551 305
22x10.00 - 8 7 244 572 203
22x10.00 - 10 8.5 254 559 254

44
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E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.6
Annex 5

Table 7 (2 of 4)
Agricultural high flotation tyres

Tyre size Theoretical Nominal section Overall Nominal rim

designation rim width width (S1) diameter (D) diameter (d)
code (A1) (mm) (mm) (mm)

22x11.00 - 8 8.5 284 546 203

22x11.00 - 10 8.5 254 559 254
23x8.50 - 12 7 214 575 305
23x9.00 - 12 7.5 229 575 305
23x9.50 - 12 7 235 577 305
23x10.50 - 12 8.5 264 579 305
24x8.00 - 12 6.5 204 610 305
24x8.50 - 12 7 213 602 305
24x8.50 - 14 7 213 602 356
24x10.00 - 12 8 254 610 305
24x11.00 - 10 8.5 254 607 254
24x12.00-12 9.5 304 610 305
24x13.00 - 12 10.5 325 592 305
25x7.50 - 15 5.5 191 640 381
25x8.00 - 12 6.5 203 635 305
25x8.50 - 14 7 213 645 356
25x10.00 - 12 8 254 635 305
25x10.50 - 15 8 267 640 381
25x11.00 - 12 9 279 635 305
25x12.00 - 9 10 305 635 229
25x12.50 - 15 10 310 640 381
26x8.00 - 12 6.5 204 660 305
26x8.00 - 14 6.5 204 660 356
26x10.00 - 12 10 310 660 305
26x12.00 - 12 10 310 660 305
26x14.00 - 12 12 356 660 305
27x8.50 - 15 7 214 680 381
27x9.50 - 15 7 229 686 381
27x10.00 - 14 8 254 686 356
27x10.50 - 15 8.5 259 691 381
27x10 - 15.3 9 261 685 389
27x12.00 - 14 9.5 304 686 356
28x9.00 - 14 7 227 711 356
28x9.00 - 15 7 234 710 381
28x10.00 - 12 8 254 711 305
28x10.00 - 15 8 254 711 381
28x11.00 - 14 9 281 711 356
28x11.00 - 15 9 281 711 381

45
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E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.6
Annex 5

Table 7 (3 of 4)
Agricultural high flotation tyres

Tyre size Theoretical Nominal section Overall Nominal rim

designation rim width width (S1) diameter (D) diameter (d)
code (A1) (mm) (mm) (mm)

28x12.00 - 12 9.5 304 711 305

28x13 - 15 11.5 330 711 381
29x9.00 - 14 7 227 737 356
29x9.00 - 15 7 227 737 381
29x9.00 - 16 7 227 737 406
29x9.50 - 15 7.5 240 737 381
29x11.00 - 14 9 281 737 356
29x11.00 - 16 9 281 737 406
29x12.00 - 15 10 310 742 381
29x12.50 - 15 10 310 742 381
29x13.50 - 15 10 351 742 381
30x9.00 - 14 7 227 762 356
30x10.00 - 14 8 254 762 356
30x10.00 - 15 8 254 762 381
30x11.00 - 14 9 281 762 356
31x10.00 - 17 8 254 787 432
31x11.50 - 15 8 301 793 381
31x12.50 - 15 10 310 792 381
31x13.50 - 15 10 351 782 381
31x13.5 - 15 10 351 782 381
31x15.50 - 15 13 391 792 381
31x15.5 - 15 13 391 792 381
32x10.00 - 16 8 254 813 406
32x10.00 - 18 8 254 813 457
33x12.50 - 15 10 310 843 381
33x15.50 - 15 13 391 843 381
35x16 - 17.5 10.5 406 914 445
36x13.50 - 15 10 351 909 381
38x14.00 - 20 11 356 991 508
38x18.00 - 20 14 457 991 508
38x20.00 - 16.1 16 488 991 409
40x19 - 19.5 15 495 1003 495
41x14.00 - 20 11 356 1 067 508
42x25.00 - 20 20.5 622 1 080 508
43x13.50 - 22 10 360 1 102 559
44x18.00 - 20 14 457 1 143 508
44x41.00 - 20 36 991 1 143 508

46
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E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.6
Annex 5

Table 7 (4 of 4)
Agricultural high flotation tyres

Tyre size Theoretical Nominal section Overall Nominal rim

designation rim width width (S1) diameter (D) diameter (d)
code (A1) (mm) (mm) (mm)

48x20.00 - 24 15 457 1 245 610

48x25.00 - 20 20.5 635 1 245 508
48x31.00 - 20 26 775 1 245 508
54x31.00 - 26 26 775 1 397 660
54x37.00 - 25 32 940 1397 635
57x31.00 - 26 26 775 1473 660
66x43.00 - 25 36 1 054 1 702 635
66x43.00 - 26 36 1 054 1 702 660
66x44.00 - 25 36 1 118 1 702 635
67x34.00 - 25 30 864 1 727 635
67x34.00 - 26 30 864 1 727 660
67x34.00 - 30 30 864 1 727 762
68x50.00 - 32 44 1 270 1 753 813
73x44.00 - 32 36 1 118 1 880 813
VA73x44.00 - 32 36 1 118 1 880 813
DH73x44.00 - 32 36 1 118 1 880 813
DH73x50.00-32 44 1 270 1 880 813
73x50.00-32 44 1 270 1 880 813
76x50.00-32 44 1 270 1 956 813
Notes:
1. These Tyres may be classified in categories of use "Tractor Drive Wheels", "Implement" or, in
the case of tyres with nominal rim diameters of 635 mm and above, also "Forestry Machines".
2. Implement Tyres are identified either by suffix "IMP" placed after the Tyre size designation
(e.g. 11x4.00 - 4 IMP) or by the word "IMPLEMENT" marked on the Tyre sidewalls.
3. Tyres of radial structure are identified by means of the letter "R" in place of " - "
(e.g. 11x4.00 R 4). The Tyre size designation may be supplemented by a rim contour prefix
(eg: VA73x44.00-32 instead of 73x44.00-32)
4. Coefficient "b" for the calculation of the Overall diameter Dmax:
(a) 1.12 for tyres with Nominal rim Diameter (d) less than 380 mm;
(b) 1.10 for tyres with Nominal rim Diameter (d) 381 mm and above.
5. In case of Tyre Size designations not included in this table (e.g. 27x10.00 – 16):
(a) The first number (e.g. 27) represents the overall diameter (D) expressed by code;
i. For tyres with rim diameters of 508 mm and above, add 1 before converting to mm
(b) The second number (e.g. 10.00) represents the nominal section width (S1) expressed by
code, and
(c) The third number (e.g. 16) represents the nominal rim diameter (d) expressed by code –
see point 2.19.
To convert dimensions expressed in code to mm multiply by 25.4 and round to the nearest mm.
The theoretical rim width code (A1) is taken to equal to the nominal section width (S1)
expressed by code multiplied by the factor 0.8 rounded to the nearest 0.5 step.

47
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E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.6
Annex 5

Table 8
Log-Skidder Tyres for Forestry Machines – Code-Designated Sizes

Theoretical Nominal section Overall Nominal rim

Tyre size
rim width width (S1) diameter (D) diameter (d)
designation
code (A1) (mm) (mm) (mm)

16.9-30 LS 15 429 1511 762

18.4-26 LS 16 467 1476 660
18.4-30 LS 16 467 1577 762
18.4-34 LS 16 467 1679 864
23.1-26 LS 20 587 1632 660
24.5-32 LS 21 622 1831 813
28L-26 LS 25 714 1644 660
30.5L-32 LS 27 775 1847 813
35.5L-32 LS 31 902 2011 813

Notes:
1. Log-Skidder Tyres are identified by suffix "LS-1", "LS-2", "LS-3", or "LS-4" placed after the size designation (e.g.
30.5L-32 LS-2).
2. Tyres of radial structure are identified by means of the letter "R" in place of "-" (e.g. 30.5LR32 LS).
3. The Tyre size designation may be supplemented by a rim contour prefix (e.g.: DH35.5L-32 LS instead of
35.5L-32 LS).

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Annex 5

Table 9
Tyres for construction applications (industrial tractors)

Overall Nominal rim

Nominal section
Theoretical diameter (D) diameter (d)
Tyre size width (S1) (mm)
rim width (mm) (mm)
designation
code (A1)
Radial Diagonal Radial Diagonal

10.5/80-18 9 274 274 885 885 457

11L-16 IND 8 290 - 850 - 406
12.5/80-18 9 308 308 965 965 457
12.5-18 11 325 325 990 990 457
12.5-20 11 325 325 1040 1040 508
14.5-20 11 355 355 1095 1095 508
14.9-24 13 378 378 1 245 1 240 610
14.9-28 13 378 378 1 350 1 345 711
16.9-24 15 429 429 1 320 1 310 610
16.9-28 15 429 429 1 420 1 410 711
16.9-34 15 - 429 - 1 560 864
17.5L-24 15 445 445 1 250 1 241 610
18.4-24 16 467 467 1 395 1 375 610
18.4-26 16 - 467 - 1 425 660
18.4-28 16 467 467 1 490 1 477 711
18.4-30 16 - 467 - 1 525 762
19.5L-24 17 495 495 1 320 1 314 610
21L-24 18 533 533 1 395 1 378 610
21L-28 18 - 533 - 1479 711
23.1-26 20 - 587 - 1 580 660
Notes:
1. These tyres are identified either by suffix "IND", placed after the Tyre size designation (e.g. 14.9-
24 IND), or by the following marking added to the tyre sidewalls: "R-4".
2. Tyres of radial structure are identified by means of the letter "R" in place of " - " (e.g. 14.9 R 24).
3. Coefficient for the calculation of the overall width of radial tyres: + 8 %.

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Annex 5

Table 10
Tyres for construction applications (skid-steers / mini-loaders)

Theoretical rim Nominal section Overall Nominal rim diameter (d)

Tyre size designation
width code (A1) width (S1) (mm) diameter (D) (mm) (mm)

7.00–15 5.50 201 762 381

8.25–15 6.00 231 848 381
5.70–12 4.50 146 570 305
5.70–15 4.50 146 647 381
23x8.50–12 7.00 213 574 305
23x8.50–14 7.00 218 584 356
23x10.50–12 8.50 264 579 305
25x8.50–14 7.00 218 635 356
26x12.00–12 10.50 307 648 305
9.00–20 7.00 259 1038 508
10.00–20 7.50 278 1075 508
11.00–20 8.00 293 1104 508
10–16.5 8.25 264 773 419
12–16.5 9.75 307 831 419
14–17.5 10.50 349 921 445
15–19.5 11.75 389 1019 495
15–22.5 11.75 389 1095 572
18–19.5 14 457 1096 495
18–22.5 14 457 1172 572
Notes:
1. Tyres of radial structure are identified by means of the letter "R" in place of "–" (e.g. 12R16.5)
2. Suffixes "IND" or "NHS" or "SS" identify tyres for skid-steers / mini-loaders (see paragraph
2.18.12.1)

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Annex 6

Annex 6

Test method for measuring tyre dimensions

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E/ECE/324/Rev.2/Add.105/Rev.2/Amend.6
E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.6
Annex 7

Annex 7

Variation of load capacity with speed

(See paragraphs 2.33. and 2.34. of this Regulation)

Part A: Drive wheel tyres for agricultural tractors

Applicable to tyres classified with categories of use: "Tractor drive wheel" (see paragraph
2.23. of this Regulation)
Variation of load carrying capacity (per cent)

Speed category symbol

Speed
(km/h) A2 A6 (+) A8 (+) D (+) A8 (1) D (1) (2) (3)

10 0 +40 +50 +50 0 0 + 58 + 56

15 -6 +30 +34 +34 0 0 + 32 + 44
20 -11 +20 +23 +23 0 0 + 26 + 33
25 -16 +7 +11 +18,5 0 0 + 19 + 22
30 -20 0 +7 +15 0 0 + 12 + 11
35 -24 -5 +3 +12 0 0 + 10 +6
40 -27 -10 0 +9,5 0 0 +6 0
45 - - -4 +7 -4 0 +2 -
50 - - -9 +5 -9 0 0 -
55 - - - +3 - 0 - -
60 - - - +1,5 - 0 - -
65 - - - 0 - 0 - -
70 - - - -9 - -9 - -

The above load/speed variations apply when the tyre is not subjected to sustained high
torque service.
(+) For field applications with sustained high torque service the values shown in the line
30 km/h apply.
(1) These load/speed variations apply to IF and VF Tyres.
(2) These percentages apply only in case of tyres listed in Annex 5, Table 7, with
nominal rim diameter (d) 381 mm and above, marked with speed symbol "B"
(3) These percentages apply only in case of diagonal tyres listed in Annex 5, Table 2
‘Drive wheel tyres for agricultural tractors - Normal section sizes’ with nominal
section width (S1) 211 mm and above (i.e. section width code 8.3 and above)
marked with speed symbol "A8".

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E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.6
Annex 7

Part B: Steering wheel tyres for agricultural and forestry tractors

Applicable to tyres classified with category of use "Tractor steering wheels" and marked
"Front" or "F-1" or "F-2" or "F-3" (see paragraph 2.24. of this Regulation)
Variation of load carrying capacity (per cent) (See paragraph 2.33. of this Regulation)

Speed category symbol

Speed
(km/h)
A6 A8

10 +50 +67
15 +43 +50
20 +35 +39
25 +15 +28
30 0 +11
35 -10 +4
40 -20 0
45 - -7

Part C: Implement tyres

Applicable to tyres classified with categories of use: "Implement"

and marked "IMP" or "IMPLEMENT" (see paragraph 2.25. of this Regulation)
Variation of load carrying capacity (per cent) (see paragraphs 2.33. and 2.34. of this Regulation)

Speed category symbol

Speed
(km/h)
A4 A6(*) A8(*) D (1)

10 + 20 + 29 + 40 + 80 + 58
15 + 12 + 21 + 33 + 73 + 32
20 0 + 14 + 26 + 65 + 26
25 -2 +7 + 19 + 58 + 19
30 -5 0 + 12 + 51 + 12
35 - -5 +5 + 44 + 10
40 - - 10 0 + 36 +6
45 - - -5 + 29 +2
50 - - - 10 + 21 0
55 - - - + 14 -
60 - - - +7 -
65 - - - 0 -
70 - - - -9 -
The above load/speed variations apply when the tyre is not subjected to sustained high
torque service.
(*) For tyres with nominal rim diameter code 24 and above, excluding codes 24.5, 26.5,
28.5 and 30.5, Annex 7, Part A applies.
(1) These percentages apply only in case of tyres listed in Annex 5, Table 7, with
nominal rim diameter (d) 381 mm and above, marked with speed symbol "B".

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E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.6
Annex 7

Part D: Tyres for forestry machines

Applicable to tyres classified with categories of use: "Forestry machines" (see

paragraph 2.44. of this Regulation)
Variation of load carrying capacity (per cent) for tyres marked with speed category symbols
A6 and A8 (see paragraphs 2.33. and 2.34. of this Regulation)

Service condition Speed (Km/h) A6 A8

Road service 20 +15 % +23 %

30 0 +7 %
40 -10 % 0

Part E: Tyres for construction applications (industrial tractors or skid-

steers / mini-loaders)

Applicable to tyres classified with categories of use: "Construction Applications" (see

paragraph 2.45.) and marked "IND" or "R-4" or "SS" or "NHS" (see paragraph 2.25. and
2.18.12.1 of this Regulation)
Variation of load carrying capacity (per cent) (see paragraph 2.33. of this Regulation)

Speed (km/h) Speed Category Symbol

A2 A8

Constant load Cyclic applications (+)

5 + 11 + 45 + 67 (1)
10 0 + 25 + 50 (2)
15 - 21 + 13 + 34
20 - 24 + 9 + 23
25 - 28 + 6 + 11
30 - 32 + 4 + 7
35 - 33 + 2 + 3
40 - 34 0 0
45 - 35 - 4 - 4
50 - 37 - 9 - 9
(+) Cyclic means applications where tyres are used one way laden and return unladen
(e.g loaders).
(1) One way distance 150 m, fully loaded.
(2) One way distance 600 m, fully loaded.

Note: speed category symbol A2 applies to tyres marked with suffix "SS" or "NHS"

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Annex 8

Annex 8

Test procedure to assess tyre resistance to bursting

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E/ECE/324/Rev.2/Add.105/Rev.2/Amend.6
E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.6
Annex 9

Annex 9

Load/speed test procedure

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E/ECE/324/Rev.2/Add.105/Rev.2/Amend.6
E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.6
Annex 9

3.4. Load/speed test programme:

Tyre speed category symbol Test step Percentage of the test load Duration (hours)

1 66 per cent 7
D 2 84 per cent 16
3 101 per cent 24

3.4.1. In case of a test drum diameter larger than 1,700 mm ± 1 per cent, the above
"percentage of test load" shall be increased as follows:
F1 = K ·F2

Where:

K
R1 / R 2  R 2  rT 
R1  rT 
R1 is the diameter of test drum, in millimeter

R2 is the diameter of the reference test drum of 1,700 mm

rT is the tyre outer diameter (see paragraph 6.2. of this Regulation), in

millimeter
F1 is the percentage of load to be applied for the test drum

F2 is the percentage of load, as per above table, to be applied for

reference test drum of 1,700 mm
Example:
K = 1 for a test drum diameter of 1,700 mm;
In case of a test drum diameter of 3,000 mm and a tyre diameter of 1500 mm:

K
3000 / 1700  1700  1500  1.12
3000  1500
3.5. The tyre pressure must not be corrected throughout the test and the test load
must be kept constant throughout each of the three test steps.
3.6. During the test the temperature in the test room must be maintained at
between 20 C and 30 C or at another temperature if the manufacturer so
agrees.
3.7. The load/speed test programme must be carried out without interruption.
4. Test procedure on a trailer
4.1. Mount two new tyres of the same type on a trailer
4.2. Apply on the trailer a mass in order that each tyre be equally loaded with a
test load corresponding to the load carrying capacity allowed for that tyre
type at 15 km/h (see load variations in Annex 7).
4.3. Run the trailer at a constant speed of 15 km/h ± 1 km/h for 48 hours.
4.3.1. Temporary interruptions are allowed, but they must be compensated by an
additional run-in of 5 min for every 20 minutes of interruption.
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Annex 9
4.4. The tyre pressure must not be corrected and the test load must be kept
constant throughout the test.
4.5. During the test the ambient temperature shall be between 5 C and 30 C or
at another temperature if the manufacturer so agrees.
5. Equivalent test methods
If a method other than those described above is used, its equivalence must be
demonstrated.

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E/ECE/324/Rev.2/Add.105/Rev.2/Amend.6
E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.6
Annex 10

Annex 10

Tyre classification code

(Optional marking)

Classification Nomenclature
code

F-1 Agricultural tractor steering wheel tyres: single rib tread

F-2 Agricultural tractor steering wheel tyres: multiple rib tread
F-3 Steering wheel tyres: industrial service (construction application)
G-1 Garden tractor tyres (implement tyres): traction service
G-2 Garden tractor tyres (implement tyres): flotation traction service
G-3 Garden tractor tyres (implement tyres): maximum flotation service
HF-1 High-flotation tyres: shallow tread
HF-2 High-flotation tyres: regular tread
HF-3 High-flotation tyres: deep tread
HF-4 High-flotation tyres: extra deep tread
I-1 Agricultural implement tyres: multi-rib tread
I-2 Agricultural implement tyres: moderate traction service
I-3 Agricultural implement tyres: traction tread
I-4 Agricultural implement tyres: plough tail wheel service
I-5 Agricultural implement tyres: steering service
I-6 Agricultural implement tyres: Smooth tread
LS-1 Logging and forestry service tyres: regular tread
LS-2 Logging and forestry service tyres: intermediate tread
LS-3 Logging and forestry service tyres: deep tread
LS-4 Logging and forestry service tyres: shallow tread
R-1 Agricultural tractor drive wheel tyres: regular tread
R-2 Agricultural tractor drive wheel tyres: cane and rice service (deep tread)
R-3 Agricultural tractor drive wheel tyres: flotation service (shallow tread)
R-4 Drive wheel tyres: industrial service (construction application)

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Annex 11

Annex 11

Example of the pictogram to be marked on both tyre

sidewalls of the tyres to explicit the maximum inflation
pressure not to be exceeded for bead seating during tyre
mounting

a = 2 mm min (height of lettering)

b = 12 mm min for tyre section height < 120 mm
18 mm min for tyre section height > 120 mm
c = 14 mm min (width of lettering)
The pictogram must be placed on both sidewalls.
The value of inflation pressure (250 kPa in the example) must be the same as specified by
the tyre manufacturer in paragraph 4.1.14. of this Regulation. "

60
E/ECE/324/Rev.2/Add.105/Rev.2/Amend.7−E/ECE/TRANS/505/Rev.2/Add.105/Rev.2/Amend.7

19 November 2019

(Revision 3, including the amendments which entered into force on 14 September 2017)
_________

Addendum 105 – UN Regulation No. 106

Revision 2 - Amendment 7

Supplement 17 to 00 series of amendments – Date of entry into force: 15 October 2019

Tyres for agricultural vehicles and their trailers

This document is meant purely as documentation tool. The authentic and legal binding text is:
ECE/TRANS/WP.29/2019/5.
_________

UNITED NATIONS

Supplement 17 to the original series of amendments to UN

Regulation No. 106 (Tyres for agricultural vehicles and their
trailers)
Paragraph 1., amend to read:
"1. Scope
1.1. This UN Regulation applies to new pneumatic tyres* designed primarily, but
not only, for agricultural and forestry vehicles in categories T, R and S1.
1.2. This UN Regulation does not apply to the following tyres:
1.2.1. Tyres identified by speed category symbols corresponding to speeds higher
than 65 km/h (i.e. speed category symbols higher than "D").
1.2.2. Tyres designated primarily for other purposes, such as:
a) Earth-moving equipment;
b) Industrial and lift trucks."
Paragraph 3.1.9.2. (former), renumber as 3.1.10.1. and amend to read:
"3.1.10.1. The inscription 'I-3' for implement tyres with traction tread as identified in
Annex 5, Tables 5 and 6."
Annex 5,
Table 5, Note 3, amend to read:
"3. Overall diameters (D) in column (*) apply to tyres marked with classification code "I-
3" – see paragraph 3.1.10.1. of this Regulation."
Annex 5,
Table 6, Note 3, amend to read:
"3. Overall diameters (D) in column (*) apply to tyres marked with classification code "I-
3" – see paragraph 3.1.10.1. of this Regulation."
Annex 5,
Table 7 (3 of 4), amend to read:
Theoretical Nominal section Overall Nominal rim
Tyre size rim width width (S1) diameter (D) diameter (d)
designation5 code (A1) (mm) (mm) (mm)
... ... ... ... ...
36x16-17.5 10.5 406 914 445
... ... ... ... ...

2
E/ECE/324/Rev.2/Add.105/Rev.2/Amend.7
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2/Amend.7

Annex 7, Part E, table, amend to read:

Speed Speed Category Symbol

(km/h)
A2 A8 D

Constant load Cyclic applications (+) Constant load Cyclic applications (+)

5 + 11 + 45 + 67 (1) +67 +92 (1)

10 0 + 25 + 50 (2) +44 +73 (2)
15 - 21 + 13 + 34 +30 +54
20 - 24 + 9 + 23 +26 +42
25 - 28 + 6 + 11 +22 +28
30 - 32 + 4 + 7 +20 +23
35 - 33 + 2 + 3 +18 +19
40 - 34 0 0 +15 +15
45 - 35 - 4 - 4 +12 +12
50 - 37 - 9 - 9 +8 +8
55 - - - +5 +5
60 - - - +3 +3
65 - - - 0 0
70 - - - -9 -9

3
E/ECE/324/Rev.2/Add.105/Rev.2/Amend.8−E/ECE/TRANS/505/Rev.2/Add.105/Rev.2/Amend.8

2 November 2020

(Revision 3, including the amendments which entered into force on 14 September 2017)
_________

Addendum 105 – UN Regulation No. 106

Revision 2 - Amendment 8

Supplement 18 to the original version of the Regulation – Date of entry into force:
25 September 2020

Uniform provisions concerning the approval of pneumatic tyres for

agricultural vehicles and their trailers
This document is meant purely as documentation tool. The authentic and legal binding text is:
ECE/TRANS/WP.29/2020/5.
_________

UNITED NATIONS

GE.20-14489(E)


E/ECE/324/Rev.2/Add.105/Rev.2/Amend.8
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2/Amend.8

Insert a new paragraph 2.18.13. and a new footnote 2, to read:

"2.18.13. The letters ‘LS’ after the nominal rim diameter marking in case of tyres for
forestry machines2
…
2 This marking shall only be mandatory for tyre types approved to this Regulation after the entry into
force of Supplement 18 to the Regulation."
Subsequent footnotes, renumber accordingly.
Paragraphs 3.1.9. and 3.1.9.1., merge and amend to read:
"3.1.9. The inscription ‘LS-3’ identifies special tread tyres in the case of log-skidder
tyres for forestry machines."
Annex 1
Item 4.1., amend to read:
"4.1. The tyre size designation ……………………………………………"
Insert a new item 4.8, to read:
"4.8. Inflation pressure (kPa/bar2) ………………………………………..."
Annex 3
Part C, example, amend to read:
"…

↓ ↓
250/70 R 20 IMP b @ 240 kPa c
↑ ↑
…"
Part D, example, amend to read:
"…

↓ ↓ ↓ ↓
600/55 – 26.5 LS b 154 A8 b @ 240 kPa c
↑ ↑ ↑ ↑
↓ ↓ ↓
TUBELESS c 2506 c LS-3 c
↑ ↑ ↑
…
These markings define a tyre for forestry machines as per paragraph 2.18.13.:
(a) Having a nominal section width of 600;
(b) Having a nominal aspect ratio of 55;
(c) Of diagonal ply structure (-);
(d) Having a nominal rim diameter of 673 mm for which the code is 26.5;
(e) Having a special tread ("LS-3");
(f) Having a load capacity of 3750 kg, corresponding to load index 154 in
Annex 4;
(g) Classified in the speed category A8 (reference speed 40 km/h);

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E/ECE/TRANS/505/Rev.2/Add.105/Rev.2/Amend.8

(h) For fitting without an inner tube ("tubeless");

(i) Manufactured during the twenty-fifth week of the year 2006
(see paragraph 3.2. of this Regulation);
(j) Requiring to be inflated to 240 kPa for measurements and tyre
resistance to burst.
The positioning and order of the markings constituting the tyre designation are
as follows:
(a) The size designation, comprising the nominal section width, the
nominal aspect ratio, the type of structure symbol and the nominal rim
diameter and the suffix LS, must be grouped as shown in the above
example: 600/55 – 26.5 LS;
…"
Annex 6
Paragraph 1, amend to read:
"1. The tyre shall be mounted on the measuring rim specified by the manufacturer
pursuant to paragraph 4.1.10. of this Regulation and is inflated to a pressure
specified by the manufacturer pursuant to paragraph 4.1.12. of this
Regulation."
Annex 7
Part A, table and the below text, amend to read:
"…
Part A: Drive wheel tyres for agricultural tractors
Applicable to tyres classified with categories of use: "Tractor drive wheel" (see
paragraph 2.23. of this Regulation)
Variation of load carrying capacity (per cent)

Speed category symbol

Standard tyres IF tyres VF tyres (2) (3)

Speed
(km/h) A2 A6 (1) A8 (1) D (1) A8 (1) D (1) A8 (1) D (1)

10 0 +40 +50 +50 +27 +27 +10 +10 + 58 + 56

15 -6 +30 +34 +34 +15 +15 +5 +5 + 32 + 44
20 -11 +20 +23 +23 +8 +8 +4 +4 + 26 + 33
25 -16 +7 +11 +18,5 +6 +6 +3 +3 + 19 + 22
30 -20 0 +7 +15 +4 +4 +2 +2 + 12 + 11
35 -24 -5 +3 +12 +2 +2 +1 +1 + 10 +6
40 -27 -10 0 +9,5 0 0 0 0 +6 0
45 - - -4 +7 -4 0 -4 0 +2 -
50 - - -9 +5 -9 0 -9 0 0 -
55 - - - +3 - 0 0 - -
60 - - - +1,5 - 0 0 - -
65 - - - 0 - 0 0 - -
70 - - - -9 - -9 -9 - -

The above load/speed variations apply when the tyre is not subjected to sustained high torque
service.

3
E/ECE/324/Rev.2/Add.105/Rev.2/Amend.8
E/ECE/TRANS/505/Rev.2/Add.105/Rev.2/Amend.8

(1) For field applications with sustained high torque service the values shown in the line
30 km/h apply.
(2) These percentages apply only in case of tyres listed in Annex 5, Table 7, with nominal
rim diameter (d) 381mm and above, marked with speed symbol "B".
(3) These percentages apply only in case of diagonal tyres listed in Annex 5, Table 2
‘Drive wheel tyres for agricultural tractors - Normal section sizes’ with nominal
section width (S1) 211 mm and above (i.e. section width code 8.3 and above) marked
with speed symbol "A8"."

4
E/ECE/324/Rev.2/Add.105/Rev.2/Amend.9−E/ECE/TRANS/505/Rev.2/Add.105/Rev.2/Amend.9

8 December 2021

(Revision 3, including the amendments which entered into force on 14 September 2017)
_________

Addendum 105 – UN Regulation No. 106

Revision 2 - Amendment 9

Supplement 19 to the original version of the Regulation – Date of entry into force:
30 September 2021

Uniform provisions concerning the approval of pneumatic tyres for

agricultural vehicles and their trailers
This document is meant purely as documentation tool. The authentic and legal binding text is:
ECE/TRANS/WP.29/2021/7.
_________

UNITED NATIONS

Paragraph 2.18.13., amend to read:

"2.18.13. The letters ‘LS’ after the nominal rim diameter marking in case of log-skidder
tyres for forestry machines2
…
2
This marking shall only be mandatory for tyre types approved to this Regulation after the entry into
force of Supplement 18 to the Regulation."
Paragraph 3.3., amend to read:
"3.3. The markings referred to in paragraph 3.1. and the approval mark prescribed in
paragraph 5.4. of this Regulation shall be clearly legible, indelible and raised
above or sunk below the tyre surface."
Insert a new paragraph 3.4.1. to read:
"3.4.1. In the case that the date of manufacture is not moulded, it shall be applied not
later than 24 hours after the tyre is removed from the mould."

2
E/ECE/324/Rev.2/Add.105/Rev.2/Amend.10−E/ECE/TRANS/505/Rev.2/Add.105/Rev.2/Amend.10

17 February 2023

(Revision 3, including the amendments which entered into force on 14 September 2017)
_________

Addendum 105 – UN Regulation No. 106

Revision 2 - Amendment 10

Supplement 20 to the original version of the Regulation – Date of entry into force:
4 January 2023

Uniform provisions concerning the approval of pneumatic tyres for

agricultural vehicles and their trailers
This document is meant purely as documentation tool. The authentic and legal binding text is:
ECE/TRANS/WP.29/2022/86.
_________

UNITED NATIONS

GE.23-02964(E)
E/ECE/324/Rev.2/Add.105/Rev.2/Amend.10
E/ECE/TRANS/505//Rev.2/Add.105/Rev.2/Amend.10

Paragraph 2.6.1., amend to read:

"2.6.1. "Diagonal" or "bias-ply" describes a tyre structure in which the ply cords
extend to the beads and are laid at alternate angles of substantially less than
90° to the centre line of the tread;"
Paragraph 2.6.2., amend to read:
“2.6.2. "Bias belted" describes a tyre structure in which the ply cords that extend to
the beads are laid at alternate angles of substantially less than 90° to the centre
line of the tread, the structure being restricted by a belt comprising one or more
layers of substantially inextensible cord material.”
Paragraph 2.18., amend to read:
“2.18. "Tyre-size designation" is for the tyre sizes listed in Annex 5 of this Regulation
the designation shown in the first column of the tables in Annex 5 and for other
tyre sizes a designation showing:”
Paragraph 2.18.7., delete.
Paragraph 2.18.13., renumber as paragraph 2.18.7.
Paragraph 2.23.1., renumber as paragraph 2.48.

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