Nitrogen in Tyres

Speed thrillers have probably heard of nitrogen in cars, nitrogen in tyres has got nothing to do with boosting your car’s engine performance.

The rubber tyre is a membrane, through which oxygen, in the ambient compressed air, permeates three times faster than nitrogen. The result is that the oxygen slowly leaks out through the rubber walls, and the under-inflation leads to higher tyre wear with a consequent decrease in safety and comfort, and higher fuel costs.

Compressed ambient air is composed of:-

  1. 1% Water vapor and other gases – Escapes up to 250 times faster than Nitrogen
  2. 21% Oxygen – Escapes 3-4 times faster than Nitrogen
  3. 78% Nitrogen – The largest molecule in air, dry and non-flammable.

Nitrogen molecules are large than normal air, nitrogen molecules are the least permeable and stay in your tyre for longer. The target is about reducing oxygen, water vapor and other gases, by use of Nitrogen. By reducing the percentage of oxygen, water vapor and other gases in your tyres from 22% to about 7% or lower, your tyres will maintain proper pressure longer than if you use “plain ambient air”. For example, with 95% nitrogen in your tyres, they retain optimal pressure three to four times longer.

Some of the benefits of filing your tyres with Nitrogen are:-

  1. Improved ride comfort
  2. Improved safety
  3. Increased fuel savings
  4. Improved life of tyre

Nitrogen has long been the accepted gas medium for filling aircraft tyres, racing tyres and heavy mining and construction vehicle tyres.

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