Nitrogen in tires

Thanks everyone for saving me a few bucks on this scam.

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agreed waste of money.

don't use public air that may have a lot of moisture unless you have to have air.

Use a compressor that has a moisture trap so you are putting drier air into your tires.

...since nitrogen is an inert gas you not will have the fluctuation in psi when tires warm up. How true is this statement?

That statement is NOT true. All gasses in a confined enclosure will increase pressure when the temperature increases.

What you gain by using nitrogen is that it is "dry" and does not contain the water vapor most air compressors inject into your tires with the air. The water vapor will add to the change in tire pressure as your tire temperatures change. Air, on average, is between 0.5%-1% water vapor. So without a water trap, a compressor will pump some of this water vapor into your tires along with the air.

If the nitrogen fill is free, I'd take it. If it's an extra charge, forget about it.

By the way, regular old air is 78% nitrogen already. :)

~Rick

Since the air that you breathe is 80% nitrogen, what do you think? Of course nitrogen will fluctuate but maybe a tiny bit less. Just the typical BS to get more of your money.
Unless it is free, nitrogen is a waste of money. Here is a link: Nitrogen or air

Been there done that.

Nitrogen post
Nitrogen II
Nitrogen 3 (2010)

This has been discussed ad nauseum (sp?) in various forums. You will find all kinds of opinions, information and mis-information. Bottom line it is a waste of money.

Here is a definitive analysis