Michelin Grip'R descent tires are designed for DH racing on varied terrain. the special scoop shaped knob design of the 2.50 helps with grip in mixed terrain, and the back edge of its tread blocks are beveled to help improve braking progressiveness and directional control. the sculpture of the 2.60 is very wide, and uses an asymmetrical staggered moto cross style pattern to help with braking and traction. Features: Anti roll wire bead, reinforced casing, super soft compound. The over sized version in 2.60 width, with its sculpture directly inspired by motocross racing, is designed for the most extreme uses.