I've seen it down in North Carolina. It's supposedly what Nascar fills it's tires with. Why on earth would people fill their tires with Nitrogen? Does it actually pose any benefits whatsoever?

 

Oxygen is your tire’s worst enemy. Air is about 78% nitrogen, 21% oxygen, and 1% other. Nitrogen is inert, non combustible, and non corrosive. Oxygen on the other hand is a destructive element. When tires are exposed to air, a long term and continuing deterioration begins - the oxidation of the rubber in the tire. What happens to a rubber band over time? It loses its elasticity and strength. This same process occurs in tires inflated with air as the oxygen attacks the rubber molecules, working from the inside out until the oxygen permeates the tire structure and ultimately the tread.
Read more here http://www.tirelast.com/id15.html

 

hmmmm i have nitrogen at work, i might use that to fill my tires then.

 

Costco evidently uses nitrogen to fill tires with where I live. If you are low they will fill them up again.

 

yeah my costco does that over here too now.