Nitrogen

[PPro]

I dont want to really want to bring up a dead thread, but regular air we breathe is usually about 80% nitrogen. I've worked in the paintball industry for about 6 years now and we use both pure nitrogen and regular compressed air from a compressor to fill the tanks that power the guns. Nitrogen is usually cleaner just because when it is bottled they filter it pretty well. Any welding store can rent you a bulk tank filled w/ nitrogen for about $5 a month. They fill up to 6000psi usually. You could fill your tires for about a year on one tank. I usually check my tires once a month and they rarely need air. You could buy a tank from anywhere from $50 to $100 depending on where you look, and fill it to 6k psi for about $15 bucks. That could last most people 2 years worth of air.

All that being said, nitrogen isnt terribly more stable then compressed air, and I dont think you would notice a difference in it. Not worth the extra money, IMO.

 

[Carlos Murphy]

Yep, me too.
Both my Ranger and GMC Suburban got nitrogen when I bought tires from Costco, they use real torque wrenches there too.
I wanted to use nitrogen in my scuba tank but can't find the proper valve assembly.