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I have seen it help, what are you basing your facts on? do you work in this field and know what is really going on?

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I've worked in the automotive industry for many years as well as the HVAC industry as pointed out by my esteemed collegue. I also spent a portion of my youth hanging around my father's tire store and I worked in a garage when I was young......back when there were garages that did all kinds of things like, yes, mount, balance and install tires (we just used air, though!). I also took physics and thermodynamics in University; a change in direction and an opportunity caused me to discontinue my studies before obtaining my engineering degree.

But enough about me;

So, what EXACTLY have you "seen it help?" hmm.... you've measured the temperatures of tires used in identical applications filled with dry compressed air vs. nitrogen? You've run a study with your customers and have checked thier mileage after time and compared the results using air vs. nitrogen on a significantly large cross section to obtain viable statistically significant results? Let's hear what you've learned. I have no problem admitting I'm wrong if you can come up with something factual that dispels my prior contention.

If one car has 35psi in it's tires and one has 30, then yes! all those wonderful claims of increased mileage and lower emmissions and peace on earth are all true! Problem is that you can have the correct tire pressure using AIR.....you just need to check it once in awhile and make sure the pressure is correct. The tires don't care whether they're filled with 80% Nitrogen or 95% Nitrogen, only that they are inflated properly. Oh, and use dry air and you won't have any corrosion issues either.





Dave

some reading;

http://community.discovery.com/eve/forums/a/tpc/f/9701967776/m/2811947799

http://www.cartalk.com/content/columns/Archive/1997/September/05.html

http://blogs.consumerreports.org/cars/2007/10/tires-nitrogen-.html

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A lot of the tire shops are going to a nitrogen fill rather than compressed air. The theory is that nitrogen does not expand and contract with temp changes like compressed air does. For example blow up a balloon, tie it and put it in the freezer. Take it out an hour later and see that it has shrunk. Leave it out in the sun and it will expand. Supposedly nitrogen will not shrink or expand. I am not a chemist, just relaying what I have been told. Green valve stem caps indicate nitrogen filled tires. It is also compatible with normal compressed air.

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