ABC Tyrepower and Mechanical Rosebery

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Nitrogen Tyre Inflation

Nitrogen tyre inflation is now available at ABC Tyrepower and Mechanical Rosebery.

Pure nitrogen molecules are much larger than Air molecules and therefore pass through tyre structures approximately three or four times slower. Pure nitrogen has a more consistent rate of expansion and contraction compared to air.

Increases in pressure affect traction and handling and with varying track and tire temperatures changing during the course of motorsport races, the consistency of pure nitrogen is critical; in summary pure nitrogen delivers more value for tyres than Air.

The air we breathe contains 78% nitrogen, 21% oxygen and a 1% mix of Argon, Carbon Dioxide and water vapour.

Nitrogen Inflation

When tyres are filled with Air, the Oxygen molecules are much smaller and pass through tyre structures; hence why tyre pressures reduce.

Pure nitrogen filled tyres retain pressure for much longer, will reduce the possibility of driving on soft tyres and will improve handling and fuel economy. It is therefore preferable in many cases to ensure tyres are filled in pure nitrogen.

As tyres are heated up under use, the pressure increases. The unknown water content makes the tyre pressure unpredictable and inconsistent, making it difficult to know how much grip a tyre has on the road.

Nitrogen vs Oxygen Diagram

It is believed that, in order to achieve optimum tyre performance, a minimum 95% pure nitrogen should be present within all automotive tyres.

Key benefits of replacing Air with Nitrogen in tyre-filling:

  • Tyre pressure stable for longer.
  • Improved tyre wear.
  • Increased pressure stability for improved grip and breaking.
  • Corrosion resistance (through removing the use of Oxygen and water vapour).

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Contact us on (02) 9690 0177 to find out more.