One of the questions we get the most is, “Can I fit this tire.” And since the Polaris RZR XP 1000 still dominates the trails every weekend, we decided to answer that question for all of you RZR 1K riders. We’ll cover the max tire size you can fit on a stock machine, what options you have to fit bigger tires, and all the considerations you need to make when you do go big. This is your guide to RZR XP 1000 max tire sizes.