There was a time when 14- or 15-inch wheels were considered more than OK for most vehicles. That time is long gone, as sizes have gone way up – and, as revealed by GM design chief Michael Simcoe ...

For years, the 15-inch-diameter wheel was the standard for us 'wheelers. It didn't matter whether we were running 31-inch- or 44-inch-diameter tires on our rigs-most of us used 15-inch wheels.

When stock 15-inch wheels are used, the widest tires that will fit C3 Corvettes on all four corners without rubbing the fiberglass or the frame are generally 245/60R15 or 255/60R15.