Why is Nitrogen better than air for inflating tyres?

Pressure loss
Air is made up of 78% Nitrogen, 21% Oxygen and 1% of other gases. Oxygen found in air is made up of very small molecules which over time permeate or escape the rubber tyre wall. Pure Nitrogen molecules are larger than those found in oxygen and cannot permeate or escape the rubber as easily. This keeps the tyre pressure consistent and stable for up to 3 or 4 times longer than normal air.

Temperature increase
Oxygen is a very unstable gas which contains a high level of moisture. When the temperature of a tyre increases, the unstable nature of oxygen within the tyre wall causes the water vapour to react and expand the tyre. Nitrogen is inert and contains no water vapour which prevents this reaction and keeps your tyre pressure consistent and stable in running. This also ensures the correct amount of rubber is in contact with the road at all times.

Oxidisation build up
Oxygen found in normal air contains a high level of water vapour. When a tyre is inflated with air, it causes “oxidisation” or rusting which begins to deteriorate the rubber as it begins to lose its elasticity and strength. Working from the inside out, oxygen, and its destructive properties increases the inner rusting of alloy wheels, affecting the tyre structure and ultimately the tyre’s performance.

3mm Tread | Winter Tyres | Part-worn Tyres | Nitrogen

 

 

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