Car tyres in a matrix structure can be divided into different pneumatic tire and tire. Most modern cars use pneumatic tires. High and low air pressure in the tires, pneumatic tyres can be divided into high pressure tires, low voltage and ultra low voltage pregnancies of three. Various types of motor vehicles commonly used low pressure tyres. According to different structure of pneumatic tyre, and divided into two inner tubes and tubeless tires tires. Cars generally use of tubeless tires. Tire ply and buffer layers arranged in different ways, radial tire and tire tires can be divided into two kinds. Commonly used are radial tires on a car. Tire sides were marked.