The Bridgestone Potenza Sport A/S tire comes in 225/40R18. It has a Load Index of 92 which means the tire is rated to hold up to 1389 lbs. The tire has a Speed Rating of Y so it is rated to go up to 186 mph. The UTQG rating is 500 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.