Everyone is trying to over complicate the issue. Nitrogen molecules are larger than oxygen molecules. Tires and tubes are semi permeable, therefore oxygen molecules leak out faster. The pressure versus temperature change is very low with the nitrogen as it has little to no moisture. Just my 2 cents
Riley Collins Rutledge, TN Sent from my iPad > On Sep 14, 2016, at 12:36 PM, svd via KRnet <krnet at list.krnet.org> wrote: > > HA! Thanks Larry. From the link you provided: > Nitrogen is a gas and is still affected by changes in ambient temperature > (about one psi for every 10? Fahrenheit). Nitrogen filled tires will require > pressure be added during the fall/winter months as ambient temperatures and > tire pressures drop. Nitrogen is good but can't change the laws of physics. > > So yes N2 does conform to the basic gas law pv=nrt. But why then do many > folk report that there is less change with temperature? Either they are > wrong, or something there?s something interesting here in its subtlety. > > One possibility would be that N2 is an insulator, thus changes temperature > more slowly. But I?ve looked it up - and it appears to be almost exactly > the same. > > So I?m baffled and asked... > > Cheers, > Owen >>
