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Old 11-19-2009, 10:00 AM   #3
indy roadrunner
Montana Master
 
Join Date: Apr 2006
Location: Brownsburg
Posts: 1,186
M.O.C. #5634
NASCAR and Indy Race cars uses nitrogen because the tires run cooler and it maintains a more consistent pressure. Air craft tires uses nitrogen because of less moisture content and does not allow to freeze in tires causing out of balance upon landing. I work for a trucking company and we bought nitrogen generators for all our tire shops around the country and when we mounted new tires they were filled with nitrogen. Truck tires has a lot of pressure and prone to leak issues and the nitrogen being larger molucules slowed that down. Supposedly with tires running cooler and maintaining correct pressure the fuel milage was suppose to increase. We have since discontined that program since when away from our shops a tire needed air say at a truck stop or something it was not available. I believe the term I heard them use was "return on investment". Bottom line - if it is free - why not if you have to pay - reconsider.
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