Extreme performance for Extreme conditions Highest comfort and grip in any weather conditions. During winter blizzards, good traction is ensured by the active stud system, central blocks working like a caterpillar and biting ever so stronger into the snow and ice on the road, and by the 3D waffle blades along the edges of tires. On rainy days driving comfort and grip are significantly enhanced by the unique V-shaped tread pattern, which evacuates water faster and more efficiently. The stability of the tire during riding is further improved by the system of should blocks, ensuring more balanced pressure distribution.The UltraGrip Extreme features: -Active Stud System -Large center blocks -Waffle blades -V-shaped tread -Large shoulder blocks The UltraGrip Extreme Actions: -Optimized "stud impulse system" reducing noise and improving comfort and traction -Central blocks ensuring better traction on snow -3D waffle blades along the edges of the tire for considerably better traction on snow and ice -V-shaped tread improving resistance to slush and aquaplaning -Large shoulder blocks enhancing tire performance giving optimum stiffness on dry surfaces UltraGrip Extreme offers you: -More force on the stud when in touch with the ground -Maximized reduction of the braking distance in winter conditions -The central part of the tire is made up of blocks working like a caterpillar which ensures better traction by "biting into" the snow -3D waffle blades improve winter performance without sacrificing stability -Unique V-tread pattern helps to evacuate water faster, to avoid aquaplaning and for better performance on slush -Thanks to larger shoulder blocks the pressure inside the tire is distributed evenly, improving stability on any surface