The Carlisle Ultra Sport Radial tire comes in ST235/60R15. It has a Load Index of 108 which means the tire is rated to hold up to 2205 lbs. The tire has a Speed Rating of J so it is rated to go up to 62 mph. The Carlisle Ultra Sport Radial is made for Light Trucks, CUVs and SUVs. It has a Load Range of D, which is also known as 8 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.