Question

why do we don't inflate helium inside tyres​

Answer 1

Explanation:

If you fill your car tyres with helium gas your car would move as good as filling it with regular compressed air or nitrogen[1]. ... Also due to the light weight of the gas, lighter than air, helium gas is escaping out into space and the earth does not have it in abundance.

But a tire is a heavy thing, and you couldn't put enough helium in one to make it float. At least not in any reasonably sized passenger car tire. Beyond that, helium molecules are small and won't be contained for long – so the gas will leak out of the tires more rapidly than air.

Answer 2

Answer:

Tyre is a heavy thing, and you couldn't put enough helium in one to make it float. At least not in any reasonably sized passenger car tire. Beyond that, helium molecules are small and won't be contained for long – so the gas will leak out of the tires more rapidly than air