Radial tire (radial tire) radial tire is a structural form of tires, which is different from bias tires, arch tires, pressure regulating tires, etc. The international code name for radial tires is "R", commonly known as "wire tires".
1. Ordinary bias tires are the structure of ordinary bias tires with inner tubes, and bias tires are mainly composed of tread, cord layer, buffer layer and bead. The cord of the cord layer and the buffer layer of ordinary bias tires are crossed and arranged at an angle of less than 90 degrees to the center line of the tread.
2. The cord layer of the radial tire is arranged at an angle of 90 degrees or close to 90 degrees to the center line of the tread, which is consistent with the meridian section of the ply layer tire, much like the meridian on the earth, so it is called a radial tire. Due to this arrangement of cord layers, the number of cord layers of radial tires can be reduced by about 40%-50% compared with ordinary bias tires. The circumferential direction of the radial tire is only connected by rubber, so in order to bear the large tangential force generated during driving and improve the rigidity of the tire, the radial tire also has a number of layers of cord and the radial section at a large angle (angle of 70-75), high strength, not easy to stretch circumferential circumferential circumference similar to the buffer belt layer. The belt layer is generally made of fabric cord (such as glass fiber, polyamide fiber) or steel cord with high strength and little tensile deformation.