Understanding ATV/UTV Tire Sizing

It's important to know the size of your ATV/UTV tires when you are considering replacing the original equipment (OE) tires. Having the right size tire is important for performance and handling.

ATV/UTV Sizing Explained

While an ATV/UTV tire size looks similar to regular tire sizes, they are not quite the same.

For example:


  • 25 = the overall height of the tire in inches at its proper operating air pressure
  • 10.00 = the width of the tire in inches when inflated to the proper operating air pressure
  • D = the tire's construction type
  • 12 = the wheel size

ATV/UTV tires have a bias ply or a radial construction. They are designated by letters in the tire size. D, as in this example above, is a bias ply construction and R is a radial construction.

What to know when Changing Your ATV/UTV Tire Size

It is very common to increase your tire size when replacing the OE tires. Using a larger tire size can increase ground clearance and give your ATV/UTV a more aggressive appearance. However, you should be very careful to maintain proper spacing between the tires, suspension and the fenders. If you are not the orignal owner, the previous owner may have already modified the tire size. It is important to know the OE tire size on your machine before making a decision to increase the size.

When you change tire sizes, the increase in diameter and the possible increase in weight and width may cause mechanical issues. If you choose to go to a larger tire size, it is suggested that you not increase the height or the width by more than one inch. Size increases greater than this can require adjustments to your ATV/UTV suspension. Modifications as drastic as this can also cause serious changes to the handling and performance of your ATV/UTV. Only higher horsepower machines (900cc or more) should consider larger tire size replacements.

If you have any questions or need any assistance, stop by your local Discount Tire and we'll get you taken care of.

Find a store near you

For more information on this and other tire and wheel services, check out our YouTube Channel or reach out to us on Twitter, Facebook and Instagram.