Max_Morley wrote on 03/21/09 at 19:41:05:The theory is that nitrogen molecules are larger and will leak out at a slower rate. ...............
I agree with Max in that Nitrogen won't leak out as fast.
BUT ... !!!!!!I worked in the Computer Chip Clean-rooms here in Allentown, PA and we found that nitrogen has a tendency to dry things out. They actually use it in sealed boxes to keep things dry. They're called "Nitorgen Dry Boxes". And.... Nitrogen really, really, really likes to dry out rubber.
Any of our epuipment that used N2 had the rubber o-rings go bad and replaced so often that it became part of the preiodic maintainecne schedule.
So.... what happens to the rubber of the inner tube?????
IT DRIES OUT.... Think about riding the twistys and a inner tube that possibly could be going....
Why doesn't it affect car tires??? It does, but the tire is so thick that it wears out first. The MC inner tube isn't as thick!!!!