Nitrogen
Nitrogen, because it is an inert gas.
Nitrogen and oxygen = Air
nitrogen
Nitrogen
nitrogen
Nitrogen
If you want traction you need the tread. Smooth tires are only used for racing.
It's nitrogen.
nitrogeon is used to inflate race car tyres due to the consistent tyre pressure throughout different tempertures.
The gas man fills the car with gasoline with a special gas can. The gas man may, also, help pull old tires off of race car after lug nuts are loosened if the car does not need fuel or if the car needs little fuel and the gas man finishes his job before any one else.
only other gas i've ever heard of being used is nitrogen.
Nitrogen.