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Discussion Starter · #1 · (Edited)
Would helium be stable in tires? Would have to save a pound or two!

Note... just found that the molecules are smaller than air,and would tend to escape right thru the rubber,like a ballon.

Oh well...
 

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Helium.. no

The molecule for helium is the smallest of the monatomic gases and would permeate the tire leaking out more quickly than air. I and other racers use nitrogen as it's expansion chahacteristics are more stable than plain air.
 

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if you did that...then I guess your car would really fly....
 

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I am using nitrogen in 2445's tires. Can't say if it made it faster. Gained 1/2 MPG on the highway. And I have not needed to adjust the pressure from summer to winter.
 
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