Tyres H, V and W represent each other: H has a top speed of 265,438+00 km/h, V has a top speed of 240 km/h and W has a top speed of 270 km/h.. Tires are made of rubber. Rubber will naturally age after a certain period of use. Generally, tires will age after 4 to 5 years of use. In the actual use of tires, it is mainly based on the specific situation of tires to judge whether to replace them. Tire surface pattern is an intuitive judgment method. When the tire surface pattern is worn to a depth below 1.6 mm, it needs to be replaced. Tires are objects that roll on the ground and are assembled on various vehicles or machinery. According to their uses, tires can be divided into: car tires, light truck tires, construction machinery tires, off-road vehicle tires, agricultural and forestry machinery tires, industrial vehicle tires, motorcycle tires, aviation tires and special vehicle tires.