- 4D sipe system increases the number of shoulder area sipes to help enhance braking and acceleration on snow and ice - 4D sipe system has self-interlocking sipes that maintain tread block stiffness to help provide excellent handling. - Entire sipe system combines to create even pressure across the tread face, which helps increase snow handling performance and cornering grip. - V-shape grooves and deep snow notches help enhance snow traction and performance. - Special tread compound helps adhere to wet and icy surfaces.