Eli5 Why do tires use air instead of solid rubber all the wsy?

Question

Wouldnt a solid rubber tire do the same job with no risk of punctures?

In: 296

Answer 1

rubber is heavy, air is light.

rubber is also significantly stiffer than air, which is a problem that can be addressed with a different suspension philosophy. its the unsprung mass that kills the idea. all that mass on the wheels themselves really dampens engine performance, steering feel, and suspension response times. imagine strapping weights to your hands and feet then going for a swim.