Inflating Tyres: Is it Possible to Make Them Lighter?

  • Thread starter Thread starter Himal kharel
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Filling a tire with air does not make it lighter; in fact, using compressed air increases its weight due to the higher density compared to normal air. The net force calculation shows that the weight of the tire plus the weight of the compressed air outweighs the upthrust. While filling a tire with hot air can make it marginally lighter than cold air, the difference is negligible and offers no practical advantage. Therefore, using air to lighten a tire is ineffective. Overall, the consensus is that air does not contribute to reducing the weight of a tire significantly.
Himal kharel
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a man tries to make a tyre lighter by filling air in it. is it possible?
 
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Hi Himal! :wink:

What do you think?

If you had a boat full of tyres, and you wanted to make the boat lighter (so it didn't sink), would air help? :smile:
 
when it is inflated, the volume increases but the air becomes compressed.
the net force will be
actual wt of tube+weight of air-upthrust
m(of tube)*g+V(of inflated tube)*d(compressed air)*g-V(of inflated tube)*d(normal air)*g

A density of compressed air >density of normal air so instead of being lighter it becomes heavier. So it is impossible
 
What about filling the tire with really hot air?
 
olivermsun said:
What about filling the tire with really hot air?

With an equal amount of air in a cold tire and a warm tire, the warm tire is SLIGHTLY lighter. But the difference is so small there is no benefit that you could get from it.
 

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