Tires are usually mounted on metal rims, which can support the vehicle body, buffer external impacts, achieve contact with the road and ensure the driving performance of the vehicle.
Tires are often used under complex and harsh conditions. They are subject to various deformations, loads, forces, and high and low temperature effects when driving. Therefore, they must have high load-bearing performance, traction performance, and cushioning performance. . At the same time, high wear resistance and flex resistance, as well as low rolling resistance and heat generation are also required.
1. Bridgestone: The tire comfort is relatively good.
2. Michelin: good ability to control rainy days.
3. Goodyear: tires are more wear-resistant.
4. Horse brand: Reduce tire noise.
5. Pirelli: The most outstanding sports performance.
6. Chaoyang and Hankook: they have obvious price advantages and high cost performance.
my country's national regulations require that in addition to the tire specifications, the manufacturer's trademark, level, maximum load and corresponding air pressure, production number, etc. should also be marked on both sides of the tire. In order to facilitate the identification of carcass cords, the sidewalls are also marked with Chinese pinyin letters. For example, M (or no word) means cotton cord tire, R means rayon cord tire, N means nylon tire, Z means radial tire, G means steel wire tire, ZG means steel wire radial, etc.
Today's car tires are further developing in the direction of flatness. The flatness ratio of the height/width ratio [(H/B) , 70 types, and a few cars have used 40 and 45 specifications.
The latest tire series representation method in the United States is to use an "alpha-numeric" mark based on "flatness ratio". For example, a tire is marked F78-14, where F represents the load-bearing capacity of the tire; The first number refers to the "flatness ratio" of H/Bx100. The number 78 means that the height of the tire is 78% of the width. The lower the number, the flatter the tire section is. The second number 14 means that the rim diameter is 14in. The unit of carrying capacity is kg. The letters indicating the carrying capacity and the load it can bear are as follows: A-410, B-445, C-480, D-510, E-540, F-580, G-620, H-685, I-715, K-735, L-760, M- -810, N-850, V-295, W-320, Y-350, Z-375.