Eli5: Why are car tires filled with air and not just made completely of rubber?
In: Engineering
There are actually designs of no-air rubber tires, so it is a relevant question. There are several factors:
Cost (current design is cheaper)
Performance: most people don’t stop to think just how awesome is that tires can take a beating for literally thousands of km. It’s harder for no air tires to retain their properties for so long. Also it’s hard to beat air tires in shock absorbance.
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