Funny... I didnt see one thing about Moisture.... :}




Or did i miss it someplace...

apperntly argon is also used. heres what i googled

Argon is used in the tires of luxury cars to protect the rubber from oxygen and to ensure quiet tires when the car moves at fast speeds.

Actually according to the ideal gas law, Pv=nRT, as volume is staying the same and temperature is increasing, pressure will also increase. Nitrogen does not increase in pressure as much as oxygen because it has a higher specific heat and requires more heat energy to increase in temperature.

from what i know nitrogen doesent seep throught the ruber as fast as natural compressed air, besides that its just easier to mesure becaus it isent as afected by temp changes as natural air. if you cant get it free dont wast ur money, i get for free from costco so for me its like why not

If you don't check your tire pressure regularly, nitrogen might be a good choice. Nitrogen filled tires lose pressure slower than the ones filled with air.

Nitrogen Molecules Bigger Than O2 ones
 

That is true, and why tires with nitrogen stay full longer than regular air filled tires. BUT....I ain't gonna be givin' dem fools my $$ for nitrogen. I have 4 air compressors at home.