Weighing the Benefits of Nitrogen in Tyres in Comparison with Air in Tyres

Nitrogen in Tyres

Why is Nitrogen gas filled in vehicles tyres?

Many vehicles use Nitrogen gas to fill their tyres as there are many compelling reasons for its usage.

First and foremost, chances of the gas migration through the tyres rubber is very less so that it will remain steady for a considerably longer span of time.

Therefore, consistent pressure can always be expected even in the case of tyre heating up considerably.

Also, non-availability of water vapour from normal compressed air means that there will be no pressure change compared to temperature swings.

Further, the absence of water vapour means that the corrosion of aluminium rim or wheel can also be avoided. Hence, there can be more savings by using the gas.

Is Nitrogen in tyres good or bad?

The best part of inflating nitrogen air in the tyres is that it would maintain the pressure for a longer period of time compared to regular air.

The reason behind it is, nitrogen molecules are larger in size compared to oxygen molecules and thus the tyres filled with nitrogen air would have not to leak quickly through tyre valve.

In addition, this improves the fuel efficiency of vehicles. The nitrogen filled tyres would maintain consistent air pressure, which eventually contributes to fuel efficiency.

Nitrogen gas will not drop pressure with change in temperature as the gas is drier compared to regular air.

Advantages of Using Nitrogen in tyres

  • Improved MPG – As compared to compressed air, tyres having the gas will bleed very slowly. The gas can help fix this issue along with a better mileage and improved tyre life.
  • Oxidation blocked – Oxygen induces oxidation and it can convert rubber to brittle. Chances of malfunctioning and flat tyre may increase. If nitrogen is there, it can help in blocking any oxidation of the internal rubber, resulting in improved durability.  
  • Enhanced tyre Life – It is a known fact that a correctly expanded tyre lasts longer. If the gas is used instead of compressed air, it will stay within for greater time. This way, increased tyre life can be expected.
  • The Gas is Greener – The gas can be a superb green initiative. It helps in maintaining an improved mileage, augmented tyre life and less emission. Hence, tyre demand can be minimized resulting in less manufacturing and therefore, less usage of resources. This will have a direct impact on shipment and overall, all of it can contribute towards the environment.

Disadvantages of Nitrogen in tyres

  • May not be Available easily – The gas may not be easily available at all places so that if anyone wants to fill a tyre in an urgency, one may have to travel considerably. Unlike compressed air, Nitrogen dealers may not be available abundantly and that can be quite frustrating at times.  
  • Nitrogen is Comparatively Costlier – Nitrogen pumps may not be available as easily as compared to conventional air pumps. Moreover, they are expensive and each time they can burn a hole in the pocket!

Can you put air in Nitrogen filled tyres?

It is okay to fill in Nitrogen in an otherwise air filled tyre although absolute benefits will not be accrued. However, it can still be helpful without completely purging the air and filling it with nitrogen.

If such a case, water vapour, and oxygen can still be considerably reduced by the use of the gas as compared to a tyre with only normal air in it.

Anyway, once the gas has been used, it is a prudent idea to use it from there on for getting the benefits in the long term. Merely using the gas for a couple of times as top-up may not be enough.

How long does Nitrogen last in car tyres?

Nitrogen is a gas that expands with increasing temperature and contracts at less temperature. Due to this property, when it is used in a tyre, it stays there in it for considerably longer than normal compressed air.

A normally inflated tyre may lose 1.5 psi air in a month whereas, for the gas-filled tyres, the same loss may happen over a period of 3 to 4 months or even longer.

Moreover, during the winter seasons when the ambient temperature drops abruptly, one need not worry for the same as it still stays the same and air loss will not happen.   

How much does it cost to fill your tyres with Nitrogen?

The filling cost can vary considerably, depending upon a number of factors like the tyre pressure, size of the tyre and if any other service by the dealer is being provided along with the fill. However, for each tyre, the price may vary roughly from Rs. 50 to Rs. 100 and it can be subjected to other factors as discussed above.  

These days, there are a large number of dealers who specialize in providing Nitrogen for tyres. Moreover, there are many online tools to find out the nearest dealer that may be offering a nitrogen filling. Here, it should also be mentioned that only an authentic filler should be chosen.

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