Nitrogen in Tires: Pros and Cons

A flat tire
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Pro: Less Leakage From Tires

Air escapes through the tire’s molecular structure as the rubber flexes and stretches while rolling. An atom of nitrogen is a tiny bit bigger than an atom of oxygen, and therefore less able to permeate rubber and escape from a tire.

The math is complicated, but the deal is that air escapes from a tire 1.6 times faster than nitrogen. Keep in mind, however, that even if you have nitrogen inside your tires, you can’t control the oxygen in the surrounding atmosphere, which is still affecting your tires from the outside in.

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