Nitrogen gas is chemically a non-flammable, non-toxic inert gas. An inert gas does not fuse with any other gas at any temperature. This basic nature of nitrogen first of all helps in keeping minimum moisture in the tyres. The Nitrogen gas is cooler than compressed air and therefore is useful in any driving conditions. A cooler tyre means that the stress levels on the tyre while moving are lesser. The tread wear and tear is also lesser due to the lesser temperature. Higher temperature in tyres also has a tendency to burst after long hours of running, so nitrogen reduces the chances of tyre burst by 90%. This can prove to be a lifesaver while on the highway where long hours and high speed, both pose a threat to the car and its passengers.