The main role of the industry tyre tread is to increase the friction between the tread and the road surface to prevent wheel slip, which exactly the same effect with the soles pattern. Tread pattern increases the flexibility of tread grounding, the block can produce greater tangential elastic deformation under the action of tangential force (such as driving force, braking force and lateral force) between the tread and the road surface. Tangential force increases, the tangential deformation increases, the contact surface of the "friction" will also be enhanced, thereby inhibiting the tread and the road slip or slippery trend.Especially passenger car tyre, to ensure passenger safety.