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      08-13-2007, 10:52 PM   #15
Yal
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Drives: '03 Z4 2.5 Maldives Blue
Join Date: May 2007
Location: Santa Cruz, CA

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As Cliff and I agree, Air is 78% nitrogen. So it's going to be the 21% that is oxygen that leaks out of the tire through the miniscule holes. So, you replace that leaked out 21% with our 78% nitrogen compressed air. Don't you now have about 93% oxygen? My point is that if you don't rotate the air in your tires like you're supposed to, you'll eventually have 99.999% nitrogen anyway.

This is how I win arguments at work and home.
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