The Forceum ATZ tire comes in 31X10.50R15. It has a Load Index of 109 which means the tire is rated to hold up to 2271 lbs. The tire has a Speed Rating of Q so it is rated to go up to 100 mph. The Forceum ATZ is made for Light Trucks, CUVs and SUVs. It has a Load Range of C, which is also known as 6 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.