What is nitrogen?
Nitrogen is air from which oxygen has been removed. About 79% of the air is nitrogen.
How is nitrogen used?
During assembly, the tyres are mostly inflated with compressed air. But some professionals may propose exclusively nitrogen-based inflation.
Most tyres can be inflated with air or nitrogen, as long as the pressure recommended by the car manufacturer is observed.
Nitrogen and compressed air can mix very well (when adding pressure, for example).
Benefits of nitrogen
When nitrogen is substituted for oxygen, your tyres lose less air and stay longer at the desired pressure.
Check your tyre pressure, even when your tyres are inflated with nitrogen
Unfortunately, there are other possible sources of leaks (tyre/rim contact area, valve, valve/rim junction, etc.), and neither air nor nitrogen can keep the correct pressure indefinitely. Be sure to check your tyre pressure at least once a month and before a long trip.
Where to fill tyres with nitrogen?
There are no petrol stations where you can fill tyres with nitrogen. This service is chargeable and generally offered by tyre professionals, garages or dealers. Euromaster network across Europe, for example, offers this kind of service.