Iris 18 Inch Tires

There is a lot of information on the sidewall of a tire. Typically, you'll find UTQG ratings for treadwear, traction and temperature, the size of the tire, the load rating index number with a speed rating index, the construction type (bias or radial), the D.O.T. compliance code, and construction details. On some tires used as original equipment, you may also find a marking that indicates its OE status.

• 18"