The TBB TR-66 tire comes in 255/35ZR18. It has a Load Index of 94 which means the tire is rated to hold up to 1477 lbs. The tire has a Speed Rating of W so it is rated to go up to 168 mph. The UTQG rating is 420AA. 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.