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      12-03-2011, 07:07 AM   #26
LarThaL
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Drives: 2011 M3
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Location: West Springfield, MA

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Quote:
Originally Posted by jphughan View Post
You wouldn't have this problem if you used nitrogen rather than air. My dealer filled the tires with nitrogen for free, didn't even have to ask.
You do realize that air is 78% Nitrogen to begin with, right? It contains 21% Oxygen and 1% trace gases of which most is Argon.

Also, since the molecular weights of Nitrogen and Oxygen are very similar, filling a tire with air is only 2.5% denser than filling a tire with pure Nitrogen.

Basically, it makes no difference.
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