The Laufenn X FIT AT tire comes in LT315/70R17. 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 S so it is rated to go up to 112 mph. 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.