2. Tires are generally composed of three parts: the outer tire, the inner tire, and the cushion belt. The inner layer of the tire has a good airtight rubber layer, so that the tire gradually to lightweight. The outer tire is mainly composed of carcass cushion layer, tread sidewalls and beads.
3. The automobile tire is one of the important parts of the car. It is in direct contact with the road surface. Together with the automobile suspension, it can reduce the impact of automobile driving, ensure good ride comfort and good adhesion between the wheels and the road surface, so as to improve the traction, braking force and passability of the car.