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Old 03-16-2007, 10:10 AM   #6
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Join Date: Sep 2004
Location: Atlanta
Posts: 1,820
Originally Posted by Tool Pants
Air is about 80% nitrogen. The oxygen molecules in air are smaller than the nitrogen molecules, so the oxygen escapes from the tire faster.

So if you fill your tires 120% the oxygen molecules will escape and you are left with 100% nitrogen.

Free nitrogen for your tires....
but you'd still have moisture in the tires. elimination of the moisture is the primary reason for filling tires w/ dry nitrogen.
'99 Boxster
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