[TR] Nitrogen in Tires

[pethier at comcast.net]

> The only difference I can see that has not been mentioned so far is that the 
> Nitrogen is DRY. 

Bingo.

> Water vapor certainly does not follow the gas laws at these 
> conditions and the water vapor may condense at ordinary temperatures and 
> vaporise at higher ones, thus changing the pressure slightly. 

Yes.

> It seems to me 
> that dry air would be just as good as dry Nitrogen.

Yes.  Nitrogen is marketed in dry form, making it convenient to buy.