The Pirelli PZero (PZ4) tire comes in 305/30R20. It has a Load Index of 99 which means the tire is rated to hold up to 1709 lbs. The tire has a Speed Rating of Y so it is rated to go up to 186 mph. The UTQG rating is 220 AA A. UTQG is a system of ratings that measures the Treadwear, Traction, and Temperature of the tire. Click here to learn more about the UTQG ratings. The tire comes in a Black Side Wall.