A tire is an annular elastic rubber product installed on the wheel rim of a vehicle. Its main function is to support the weight of the vehicle, transmit driving force and braking force, buffer road impact, and ensure the safety and comfort of vehicle travel. It is widely used in various types of vehicles such as automobiles, motorcycles, and bicycles. Specifications Size identification: Taking the example of an automobile tire, the common format is 205/55 R16, where 205 is the tire width (mm), 55 is the aspect ratio (tire height / tire width), R indicates radial structure, and 16 is the wheel rim diameter (inches). Load index: Represented by numbers, for example, 91 corresponds to a maximum load of 615kg, with different numbers corresponding to different load capacities. Speed rating: Represented by letters, such as V corresponds to a maximum speed of 240km/h, H corresponds to 210km/h, etc., to match the performance needs of different vehicle models. Material Main rubber: A mixture of natural rubber and synthetic rubber (such as styrene-butadiene rubber, butadiene rubber) to balance elasticity and wear resistance. Skeleton material: The tire body uses polyester cord, nylon cord, etc., to enhance tire strength; the belt layer is mostly steel cord to improve impact resistance and stability. Auxiliary materials: Carbon black is added to improve wear resistance, sulfur is used for vulcanization molding, and there are plasticizers, antioxidants, and other additives to improve performance.
