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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It would make the wheels too hard and too heavy. you really don’t want that in something that rolls. If it is too hard, then it would end up being very difficult to control. especially on something very large but thin like a bicycle. And if it’s heavy, it would be harder to both accelerate and steer, and worst of all, braking would be much much slower. cuz momentum.
Moreover riding on hard and unforgiving terrain like gravel would be a lot harder because rubber would transmit every single little bump. So in a way air also acts as a suspension fork like in motorcycles.
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