Stuart,
We've discussed this to some degree. Check out:
Quote:
Personally, I think it is a waste of your good money. $120 to inflate your tires is way past the the point of a useful return on your investment in my opinion. (For your Ferrari - OK. You obviously got money to burn

)
I also have a theory that it could even be dangerous. One reason nitrogen is used in aircraft, racing and special applications is due to its stability in heat. The inflation tables used for your truck tires assume a heat expansion factor of 10%+ for air. Those using nitrogen who don't compensate could be unwittingly creating a premature failure situation thru their well intended act. (I'd like to find more info on the subject.)
Then there is the nuisance factor. Costco put nitrogen in my pick-up tires. I'm always adjusting the pressure for load in the pick-up, and in the Born Free to a lesser degree, depending on load. Costco is 70 miles away and there's no nitrogen in our town. And, where would you find nitrogen when traveling? I think you get the point.
'Just one man's point of view.
Mike