As early as 1836, the Belgian Diez had proposed the idea of ??pneumatic tires. In 1845, civil engineer Robert W. Thomson of Middlesex, England, invented a tire wrapped in leather and filled with air or horsehair, but it was not actually used. In 1888, John Bird Dunlop, a Scottish veterinarian living in Belfast, Ireland, saw that the solid rubber wheels of his son's bicycle were bumping badly on the stone road, so he used a tube that was inflated through a valve and coated with rubber. Protective layer, made a pneumatic tire. This kind of pneumatic tire is wrapped around the wheel. To repair the puncture in the inner tube, you must first soak the rubber with benzene, and then apply rubber after repairing it. This new tire was ridiculed at first, but his son rode the bicycle and won first place in the competition, so the invention gained people's attention. Dunlop patented his invention, gave up his career as a veterinarian, built the world's first tire manufacturing plant, and began producing rubber tires. From 1894 onwards, Dunlop tires were officially used on the early mass-produced "Hildebrand" and "Volmuller" brand motorcycles. The Michelin company of French brothers Andre Michelin and Edouard Michelin invented a removable pneumatic rubber tire in 1892. In the past, only specialized repairmen could deal with tire punctures, but now ordinary people can handle it in a quarter of an hour. It can be repaired. This invention affected the entire world. In 1895, the Michelin brothers sent the "Lightning" car equipped with removable tires for the first time to participate in the Paris-Boll-Paris Automobile Jam. Tire cars officially entered the stage of history and quickly became popular all over the world. In 1908, the Michelin Company developed dual-wheel wheels, which effectively solved the tire load problem of heavy vehicles. In 1937, the Michelin company developed the radial tire. This tire tread, named "fly cage", was reinforced by multiple layers of ply and tightened with layered steel cord layers. These cord layers are arranged vertically with the tire steel wires, which greatly improves the stability of the tire in the driving direction. In 1981, the British company Dunlop invented a new type of tire that allowed the car to continue driving even if it was punctured without the tire coming off the rim. The inner surface of the tire crown is coated with polygel, which acts as both a sealant and a lubricant. The safe life of this tire is only 25,000 kilometers.