Nitrogen gas filled in tyres has had its doubts with a number of people when it comes to filling your tyres with it. Why should one do it? Its expensive. In fact, why should one pay for filling air (or nitrogen) in tyres. Moreover, the compressed air that is filled in tyres is about 80 per cent nitrogen.
Nitrogen 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 basic idea of Nitrogen gas is that it is cooler than compressed air and therefore is useful in any driving conditions.