The Evolution M/T tires gives you the confidence to power through mud and tackle dirt roads. Earth Diggers tackle tricky terrain with large blocks with alternating mud scallops that forcefully dig into loose dirt, sand or sticky mud. Mud Slingers get extra grip from the deep wide trenches that continuously clear thick mud from the tire. The Trail Grip Sidewall powers over trail obstacles with "climbers" that grab rocks and sticks, providing strong resistance to rubbing. Stone Barriers boost durability via ridges designed to help protect against damage from sharp rocks and expel lodged stones.