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

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

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Anonymous 0 Comments

One of the major issues that people forget about is heat.

Tires are compressed against the road, they flex with every revolution, and flexing rubber creates heat. At higher speeds, that rapid flexing creates so much heat they they basically start to melt and fall apart.

That’s why you only see solid rubber tires on low-speed vehicles like lawnmowers and forklifts, and it’s why there’s laws limiting the top speed of vehicles with solid rubber tires.

EX: [Tex. Transp. Code § 545.361](https://casetext.com/statute/texas-codes/transportation-code/title-7-vehicles-and-traffic/subtitle-c-rules-of-the-road/chapter-545-operation-and-movement-of-vehicles/subchapter-h-speed-restrictions/section-545361-special-speed-limitations): “(b) An operator of a vehicle equipped with solid rubber or cushion tires may not drive at a speed of more than 10 miles per hour.”

[AZ Transp. Code 28-706](https://www.azleg.gov/ars/28/00706.htm), [SD Codified Laws 32-25-6.2](https://sdlegislature.gov/Statutes/32-25-6), etc.

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