What is an inflation-free flexible tire?

Non-pneumatic tires refer to tires that achieve shock absorption and cushioning performance without air pressure. Pneumatic tires use rubber to seal the air with pressure. When air is compressed, the collision of air molecules on the container wall becomes more intense, which leads to the increase of air pressure and the formation of macroscopic elasticity. So far, no other tire can surpass the superior cushioning performance and low rolling resistance of pneumatic tires. Non-pneumatic tires, that is, tires that do not need to be inflated, only use the materials and structure of the tires themselves to achieve the performance of support and cushioning without the help of air. ① Rubber solid tire. This kind of tire has been produced for hundreds of years. Its main features are heavy weight, poor elasticity, large rolling resistance and large bearing capacity. Suitable for large vehicle with slow moving speed and high load requirement. ② Open structure tires. It is made of polyurethane material and adopts open structure and staggered tube three-dimensional shock absorption. Its advantages are beautiful appearance and light weight, but its disadvantages are low speed and high temperature resistance.