The Mastercraft Courser Trail HD tire comes in LT275/70R17. It has a Load Index of 121 which means the tire is rated to hold up to 3197 lbs. The tire has a Speed Rating of R so it is rated to go up to 106 mph. The UTQG rating is 620AB. 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 Mastercraft Courser Trail HD is made for Light Trucks, CUVs and SUVs. It has a Load Range of E, which is also known as 10 Ply. This is maximum safe carrying capacity of the tire. A higher Load Range allows the tire to carry a heavier load. The tire comes in a Black Side Wall.