Tubeless tires have the advantages of good air tightness, good heat dissipation, simple structure and light weight. The disadvantage is that repair is more difficult on the way. Wide-section tire: With the increase of vehicle speed, it is required to reduce the center of gravity of the whole vehicle and improve the handling performance, which requires to improve the lateral stability and adhesion performance of the tire to the road surface, so as to ensure the safety of driving at high speed, thus the appearance of low profile tire becomes an inevitable trend.
The ratio of section height H to section width B of Tire H / b is an important parameter representing the structural characteristics of tire, which is called the ratio of height to width of tire, some people also call it the ratio of flat. Since the 1920s, the outside diameter of the car tire has decreased by 25% , the rim diameter has decreased by 35% , the width of the tire and rim has nearly doubled, the aspect ratio of the tire has decreased continuously, the car has reached 0.5, the racing car has reached 0.4, especially wide tires and high-end cars match, more beautiful and generous.
