UTV / ATV Tire Size Calculator

Compare UTV and ATV tire sizes and estimate diameter, revs per mile, and speedometer impact.

Common questions

How much bigger can I go on UTV tires without re-gearing?: 1–2 inches over stock is usually safe. Beyond that, expect noticeable low-end power loss and CVT belt wear without clutch tuning.
Will bigger UTV tires affect the speedometer?: Yes — every 5% increase in diameter reads about 5% slow on the speedometer. GPS is the accurate reference.
Do bigger tires void my UTV warranty?: Sometimes for drivetrain claims. Check with your dealer before going more than 2 inches over stock.