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nitrogen in tires


Lead Wiki Manager
Super Moderator
Jul 18, 2004
Brownsburg, Indiana
Since the air we breathe hear on Mother Earth is 78% nitrogen, simply filling tires with "pure" nitrogen doesn't accomplish much.

The issue with compressed air is that the act of raising the pressure tends to increase the amount of moisture in the air. If the place that fills your tires has a good quality, well-maintained air dryer on the output of their compressor (and most big shops do), then the moisture isn't a problem because it's been removed from the air.

But, if filling your tires with "pure" nitrogen is a cover-up for the fact that they don't have dry air in available in the shop, then the nitrogen thing is worthwhile. In the end, though, I think the nitrogen thing has more to do with separating customers from their money than providing them with a real benefit.
Jan 16, 2008
Wow! I have a choice...

1) Keep a tank of compressed nitrogen in my garage. Check the pressure in the tires every two weeks. Fill as needed.

2) Check the pressure in the tires every two weeks. Fill, as needed, using the air compressor that I use for a dozen other things.