Eli5: Why and how isn’t there any bicycle tire that is 100% rubber? Like, no air on the inside so no puncture risk isn’t it? Is really technology that far behind yet?

Question

Eli5: Why and how isn’t there any bicycle tire that is 100% rubber? Like, no air on the inside so no puncture risk isn’t it? Is really technology that far behind yet?

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Answer 1

There are solid rubber tires, but they’re heavy and expensive. Pneumatic tires are more practical even with the issue of leaks.