[s-cars] Nitrogen in tires?

[Bruce Bell]

It's the moisture content. Dry compressed air works, as RM says, nearly as
well. The F1 guys like to be spot on pressure.

Bruce

>Use of nitrogen in tires is a common practice with racers, because
>tire pressure is critical for best handling.

I'm sure you are correct about the practice, Charlie, but air (primarily a
mixture of 80% N2 & 20% O2) will obey exactly the same gas laws as will
"pure" N2.

>Also figure - race tires are more sensitive to pressure being
>exactly spot-on.  Plus, the benefits of nitrogen allow the pressure
>to be right even on the first lap before the tires are fully heated up.

Again, Charlie, the tire pressure will change essentially the same way on
heating whether air or N2 is used.  This is a nonsense argument.  I'm sure
you have heard it expressed this way but it's still nonsense.