1. Advantages
1) Low rolling resistance and fuel saving: Due to the belt layer, the tangential deformation and relative slip of the crown after the tire hits the ground is much smaller than that of ordinary tires, and the sidewall of radial tires is thin and the radial deformation recovers quickly. These two features are beneficial to reduce the internal wear of the tire and reduce the rolling resistance. Tests have proved that the rolling resistance of radial tires is 20%-30% lower than that of ordinary bias tires, which can save fuel by 5%-10%.
2) The tread has good wear resistance and long service life: when the wheel rolls, the tire landing surface deforms and slips. The deformation promotes slippage, which intensifies the wear of the tread. Because of the radial tire crown rigidity, small deformation, almost no slip, in addition, the crown contact area is large, the unit pressure is small and uniform, so the tread wear is reduced. Tests show that the service life of radial tires is 30%-40% longer than that of bias tires.
3) Large elasticity and good cushioning: Because the radial tire cords are arranged in a radial direction, when the wheel rotates, the deformation of the tire perpendicular to the ground is larger than that of a bias tire. The carcass is soft and elastic, so it improves the smoothness of the car. Sex.
Strong puncture resistance: Because the radial tire has a hard belt layer, it greatly enhances the puncture resistance of the tire crown, reduces the risk of tire blowout, and improves driving safety.
Large adhesion: Radial tires have a larger ground contact area when driving, and at the same time, due to the action of the belt layer, the ground pressure distribution is more uniform, thereby improving the adhesion and reducing the side slip.
2. Disadvantages
1) The sidewall is thin and easy to crack.
2) The sidewall deformation is large and the lateral stability is poor.
3) The manufacturing requirements of radial tires are high and the cost is high.