What is the function of wheels?

[VioletFitz]

Tires are circular elastic rubber products mounted on various vehicles or machinery, making contact with the ground and rolling. They are typically installed on metal rims to support the vehicle body, absorb external shocks, ensure contact with the road surface, and guarantee the vehicle's driving performance. Wheels are rotating components located between the tires and axles that bear loads. Their function is to mount the tires and withstand various forces between the tires and axles. Tires often operate under complex and harsh conditions, experiencing deformation, loads, and extreme temperatures during driving. Therefore, they must possess high load-bearing capacity, traction performance, and shock absorption capabilities. Additionally, they are required to have high wear resistance, flex resistance, as well as low rolling resistance and heat generation.