1、Support all the weight of the vehicle, bear the load of the car, and transfer the force and torque in other directions;

2、Transmit the torque of traction and braking, ensure good adhesion between wheels and road surface, in order to improve the dynamics of the car, braking and throughput;

3、It and the automobile suspension together to moderate the impact of the car driving, attenuation of vibration;

4, to prevent automotive parts and components are subject to severe vibration and early damage, to adapt to the vehicle’s high-speed performance and reduce the noise when driving.