Air or nitrogen ?
I am not saying this stuff does anything but it seems the factory- not my dealer - sent the car out the door this way.
The Best of Corvette for Corvette Enthusiasts
"Available at leading automobile dealers and service centers everywhere."
Definitely dealer installed, not at the factory.
Last edited by meyerweb; Feb 9, 2016 at 11:28 AM.
The only thing that can make a difference in terms of pressure rise is IF the nitrogen is truly dry (no H2O) and the plain "air" is humid. As the tire heats up, the water in the humid air can vaporize, increasing pressure more than a dry gas will.
Will it hold pressure better? Marginally. Nitrogen molecules are bigger than Oxygen molecules, so the O2 will diffuse through the rubber slightly faster than do the nitrogen molecules. But as others have pointed out, regular "air" is 78% nitrogen anyway, and even if the nitrogen your dealer adds to your tires is pure, they don't evacuate the tire of all the plain "air" first, so you still have a mix of nitrogen and "air" in the tire.
Even if you could get the tire filled with pure nitrogen they will eventually lose pressure, and the pressure will still vary with temperature so you still need to check, and top off, your tires.
The minor advantages of nitrogen simply aren't worth paying for.


























