The Pirelli PZero (PZ4L) Run Flat tire comes in 225/35R20. It has a Load Index of 90 which means the tire is rated to hold up to 1323 lbs. The tire has a Speed Rating of Y so it is rated to go up to 186 mph. The UTQG rating is 320 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.