1. Advantages
1) Small 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 are much smaller than that of ordinary tires, and the radial tire sidewall is thin, and the radial deformation recovery is fast. These two features help to reduce wear in the tire and reduce rolling resistance. The test proves that the rolling resistance of radial tires is 20%~30% smaller than that of ordinary bias tires, which can save 5%~10% of fuel.
2) The tread has good wear resistance and long service life: when the wheel rolls, the tire landing fox surface is both deformed and slipped, and the deformation promotes slipping, and the slippage aggravates the tread wear. Due to the large crown stiffness, small deformation, and almost no slippage of radial tires, in addition, the crown grounding area is large, the unit pressure is small and uniform, so the tread wear is reduced. The test proves that the service life of radial tires is 30%~40% higher than that of bias tires.
3) Large elasticity and good cushioning: Because the radial tire cord is arranged radially, when the wheel rotates, the deformation of the tire perpendicular to the ground is larger than that of the bias tire, and the carcass is soft and has good elasticity, so the smoothness of the car driving is improved.
Strong anti-puncture ability: Radial tires have a hard belt layer, so the anti-puncture ability of the crown is greatly enhanced, the risk of tire puncture is reduced, and the driving safety is improved.
Large adhesion: radial tires have a large grounding area when driving, and at the same time, due to the action of the belt layer, the ground pressure distribution is more uniform, which improves the adhesion and reduces the sideslip phenomenon.
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.