The Ground Speed Voyager HT tire comes in 235/55ZR18. It has a Load Index of 104 which means the tire is rated to hold up to 1984 lbs. The tire has a Speed Rating of W so it is rated to go up to 168 mph. The UTQG rating is 600 A B. 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.