only in my bmw tiresjohn said:Anyone ever put Nitrogen or CO2 in their tyres instead of just air? :idea:
Right. I expected someone to call me out with references to Boyle's law or Laussac or some such that proves all gases expand uniformly with respect to temperature rise. It's the moisture content that causes the difference - that's why I mentioned N2's dryness and stability.mikef4uk said:I have never heard of using co2, we used to use n2 in the race car tyres, it does'nt make a great difference to hot or cold running pressures, but what it does do with proper purging is it guarantee's that you will have no moisture in the tyre, moisture in a race tyre is the last thing you need, with race tyres running at 100c and sometimes over the water expansion and subsequent pressue increase is not desireable![]()
"air content table"
Nitrogen N2 78.084 %
Oxygen O2 20.9476 %
Argon Ar 0.934 %
Carbon Dioxide CO2 0.0314 %
Neon Ne 0.001818 %
Methane CH4 0.0002 %
Helium He 0.000524 %
Krypton Kr 0.000114 %
Hydrogen H2 0.00005 %
Xenon Xe 0.0000087 %
Koop said:Right. I expected someone to call me out with references to Boyle's law or Laussac or some such that proves all gases expand uniformly with respect to temperature rise. It's the moisture content that causes the difference - that's why I mentioned N2's dryness and stability.