I keep hearing of all the benefits of nitrogen learned from NASCAR and the airline industry including longer constant tire pressure, less moisture, better MPG, and longer tread and side-wall life.

After reading numerous articles on the science of why nitrogen-air is better than oxygenated air, I can't see a downside to trying this. Since our X5 tires are really expensive (specially with 20's+) it seems like a no brainier. I'd like to know if anyone here has real-world experience with nitrogen filled tires.

Thanks-
Kevin