Dave Eastwood (Gadgetman) - Club Chairman Posted March 24, 2013 Share Posted March 24, 2013 I think that was one of the points Fifth Gear were making; the average garage isn't/can't do the job properly, so the tyres are usually filled with a contaminated mix. This can then end up being as bad or worse. Quote Link to comment Share on other sites More sharing options...
Matt Seabrook Posted March 24, 2013 Share Posted March 24, 2013 Correct the best you can hope for from going to a tyre shop/garage to do is fill the tyre with OFN then let it all out by removing the valve core refill and repeat the process and then on the third time fill with OFN. You still will not have got rid of all the air but you cant practically pull a vacuum in a tyre to remove all air. Quote Link to comment Share on other sites More sharing options...
Hammy Posted March 24, 2013 Share Posted March 24, 2013 I've used air since I saw James Bond breathing from a tyre under water. You never know when this might be useful. 3 Quote Link to comment Share on other sites More sharing options...
KenP Posted March 24, 2013 Share Posted March 24, 2013 Still working my way thought my stock of SteveD's bottled farts he was selling on here some time ago so not had a need to go to nitrogen! Quote Link to comment Share on other sites More sharing options...
martyblues Posted March 24, 2013 Share Posted March 24, 2013 Still working my way thought my stock of SteveD's bottled farts he was selling on here some time ago so not had a need to go to nitrogen! Not to be used underwater, as previous post Quote Link to comment Share on other sites More sharing options...
Wile E. Coyote Posted March 24, 2013 Share Posted March 24, 2013 the gas does not expand like oxygen with heat. Isn't nitrogen subject to the ideal gas equation (PV = nRT)? Surely if V, n, and R are constants (which they would be in a leak free, constant volume, container), then any increase in temperature (T) must result in an increase in pressure (P)? 1 Quote Link to comment Share on other sites More sharing options...
Graham0127 Posted March 24, 2013 Share Posted March 24, 2013 Steve D,I agree ,total b@ll@x. Buy a preesure guage & check tyres regularly. Quote Link to comment Share on other sites More sharing options...
BEN99W Posted March 24, 2013 Share Posted March 24, 2013 The Nissan GTR's tyres are filled with Nitrogen from the factory, so there must be some value to it. But then it's a heavy, hard cornering car which probably gets a lot of heat in its tyres and I expect Nissan are able to make a proper job of putting the nitrogen in rather than rely on Kwikfit Barry with a bottle of gas. Ben Quote Link to comment Share on other sites More sharing options...
KenP Posted March 24, 2013 Share Posted March 24, 2013 Not to be used underwater, as previous post Quote Link to comment Share on other sites More sharing options...
Matt Seabrook Posted March 25, 2013 Share Posted March 25, 2013 The Nissan GTR's tyres are filled with Nitrogen from the factory, so there must be some value to it. But then it's a heavy, hard cornering car which probably gets a lot of heat in its tyres and I expect Nissan are able to make a proper job of putting the nitrogen in rather than rely on Kwikfit Barry with a bottle of gas. Ben There sure is some value in it. It makes great marketing for Nissan. Look at our car it's so special it need fancy gas in it's tyres Or am I being cynical Quote Link to comment Share on other sites More sharing options...
Paul Gibney - Lancashire AO Posted March 25, 2013 Author Share Posted March 25, 2013 Cynical, a little. I guess it doesn't matter what's in them, nitrogen,air,helium whatever. so long as they keep us on the black stuff .... Quote Link to comment Share on other sites More sharing options...
nefarious_ Posted March 26, 2013 Share Posted March 26, 2013 Isn't nitrogen subject to the ideal gas equation (PV = nRT)? Surely if V, n, and R are constants (which they would be in a leak free, constant volume, container), then any increase in temperature (T) must result in an increase in pressure (P)? Boyles Law Quote Link to comment Share on other sites More sharing options...
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