Every aspect of Michelin's XC-Series tires has been designed to maximize traction. Now a new rubber mixture improves durability by 10 - 15 percent, and grip by 25 percent, compared with their predecessors. The aggressive, terrain-specific knob patterns bite down hard while resisting chunking. The XC-series casing is designed to absorb impacts with less rebound, so the tires spend more time on the ground - for outstanding acceleration, braking and steering. The new M12 XC tire is highly versatile and excels in a variety of terrains.