Re: [VAL] Nitrogen doesn't expand when heated?

["kodiak66joe" <kodiak66joe@xxxxxxxxxx>]

I'm sure notrogen expands with temperature, but  . . . racers use nitrogen
in tires because it doesn't contain water vapor like regular air.  Without
the water vapor expanding the change in tire pressure due to heating of the
tire is much less.  When the tire pressures don't change with temperature,
the handling characteristics of the tires are more predictable, which is
important when you are driving at the limit of adhesion.

I doubt any of this matters on a trailer unless you are racing with your
trailer hitched to the car.  And as a side note, I think it was on a program
called Motorsport Mondial on Speed Channel a couple of years ago that I saw
a racing event with cars pulling trailers (actually it was somewhat a cross
of a race and a demolishion derby).

Joe