Daily Planet on Discovery Channel just showed a short report on Costco tire center filling up tires with pure nitrogen.
While there's the stated benefit of no corrision from oxygen and water molecules, less leakage (supposedly both nitrogen and oxygen molecules leak through rubber but nitrogen at much less rate, even though this is so small I doubt it's even worth mentioning ), I also seem to recall nitrogen molecules expands and contracts less from temperature change which is a huge benefit for race car application.
I am curious though if Costco is actually first purging the volume of "regular" air that is already in the tire/rim cavity when the tire is mounted on the rim before they fill it with nitrogen
This seems to be more gimmick than anything in a consumber application.
While there's the stated benefit of no corrision from oxygen and water molecules, less leakage (supposedly both nitrogen and oxygen molecules leak through rubber but nitrogen at much less rate, even though this is so small I doubt it's even worth mentioning ), I also seem to recall nitrogen molecules expands and contracts less from temperature change which is a huge benefit for race car application.
I am curious though if Costco is actually first purging the volume of "regular" air that is already in the tire/rim cavity when the tire is mounted on the rim before they fill it with nitrogen
This seems to be more gimmick than anything in a consumber application.
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