Originally Posted by
GeorgiaHybrid
Sparkie,
As you can tell from my nick, I'm a bit of a hypermiler. I hang out at greenhybrid.com and cleanmpg.com a lot. The only advantage to running nitrogen in your tires is the pressure will not increase as much as they will with normal air while running at speed.
This will allow you to run increased pressure in your tires without having a major problem (blowing the tire off of the rim at speed). Having said that, most of us do NOT run nitrogen in our tires. We do check them 1 to 2 times a week with a VERY accurate gauge. My DD is a Camry Hybrid that "by the book" should be running 32 psi in the tires. The maximum "cold inflation pressure" on the sidewalls is called out at 51 psi. I use a happy medium of 42 psi, have a good turn in response on the tires, have even wear and the tires run 20 degrees cooler than at 32 psi.
Of course it helps when you keep it clean and slick to cut down air resistance with some of the products here at AG :D