It is nitrogen.
nitrogen
Street cars air (which is manily Oxygen, nitrogen), race cars nitrogen.
Nitrogen
Nitrogen is a dry, inert gas used to inflate airplane tires, off-road truck tires, military vehicle tires, and race car tires for improved performance, more tire mileage and better fuel economy.
Nitrogen
Nitrogen.
nitrogeon is used to inflate race car tyres due to the consistent tyre pressure throughout different tempertures.
Air is used to inflated car tyres but cars can be equipped with nitrogeon inflated tyres but this is usually only beneficial to race cars
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.
The tires of the car
Slicks.
Nitrogen, because it is an inert gas.