A tiny bit of information about nitrogen to start with: Fighter jets, commercial planes and some armored vehicles that ferry VIPs around the world go with nitrogen in their tires. Ever wondered why?
The fact that nitrogen is more stable than compressed air and is also less corrosive that further results in increasing your tires’ longevity. Not convinced? Nitrogen can also play an important role in increasing and maintaining your fuel efficiency. It has bigger sized molecules as compared to air, so it’s less likely to seep through the tires, meaning you’ll be driving at a stable psi most of the time, again resulting in better fuel consumption.
While Nitrogen forms 78% of normal air that goes into our tires, it also has 21% oxygen along with some water presence; hence it is more likely to rot your wheel than nitrogen. However, another point to it is that modern day cars come with alloy wheels, which are resistant to corrosion.
While air fill ups are free in petrol pumps in India, nitrogen fill ups will set you back by around Rs.25-50/tire. However, the same will further reduce your stops at the pumps for air refilling and will give you linear fuel efficiency figures for long. The same can further increase the life of your tires. Wonder why?
The thing is that all tires gradually lose pressure over time, regardless of the fact whether you drive your car regularly or not. So the 21% of oxygen that’s present in the tire’s air is known to escape the permeable tire body which is why overall handling of the car feels a bit heavy after sometime. Reason- air isn’t stable enough and is very volatile. Oxygen is also one of the reasons for the wear and tear of your tires, as it causes oxidation (eats through the rubber just like metal).