Tire flat ratio
The aspect ratio is the percentage of the tire's cross-sectional height to the maximum width of its cross-section. Tires with high aspect ratio have relatively high comfort due to their long sidewall and strong cushioning capacity, but they have a poor feeling on the road surface and weak lateral resistance when cornering; On the contrary, tires with low aspect ratio and large inner diameter have a large ground contact area and a large pressure on the tire due to the short sidewall and wide tread, which is very sensitive to the road surface, strong lateral resistance when cornering, and strong vehicle handling.
Tire tread
In addition to the appearance, the tire pattern also directly affects the handling of the car, whether there is noise, drainage performance, wear resistance, etc. The most common tire patterns are five types: horizontal groove pattern, straight groove pattern, straight groove pattern, block pattern and asymmetrical pattern. Among them, according to the editor of maigoo, the horizontal groove pattern has good friction, the straight groove pattern has low driving resistance, which is suitable for the outdoor driving needs of SUVs, and the block pattern is suitable for mud or snow, while the asymmetrical pattern has better drainage.
Tire width
The width of the tire is determined by the width of the wheel, and the width of the tread also determines the grip of the tire. However, due to the increase in rolling resistance of wide tires, fuel consumption will also increase. So in the classification of tires, models that pursue performance will choose wider tires, but if it is an economy car for families, then its tread will not be very wide.
Tire performance index
Car tires must have three signs of tire wear, traction and heat generation, referred to as "three T". The wear index refers to the identification of the wear performance and service life of the tire tread, the higher the value, the more wear-resistant the tire; The tire traction index, which measures the adhesion performance of the tire to the ground, is divided into four levels: AA, A, B, and C, with AA being the highest; The heat generation index, which refers to the heat generation ability of the tire, is related to the high-speed performance of the tire, and is divided into three grades: A, B and C, with grade A being the best.