I don't pretend to be an expert, but I was told that the benefit to nitro is
that air pressure in most tires disipates through the tire at about 1 pound
per month. Apparently nitrogen does not disapate to the same extent.
On 1/2/08, Bob Clerc <kerplunk@clercfamil
>
>
> > If you believe that, then you have never taken a class in chemistry.
> > That stability story is one of the nonfacts that nitrogen tire fill
> > equipment makers use to push their pretty much worthless machines.
> > Nitrogen, oxygen and all the other gases that make up air expand and
> > contract at exactly the same rate with temperature. Pick up a
> > chemistry text and read the chapters on "gas laws."
> >
> > The only added value to filling tires with nitrogen is for the person
> > selling the service.
> >
> > Les
>
> Then why does Costco fill all the tires they sell with nitrogen. You
> cannot buy nitrogen from them--it is only something they provide at no
> cost for their new tires. I don't believe that Costco is run by idiots.
> There must be some value. In my case, the only difference I've seen is a
> much, much lower of air loss due to migration. But that is a very
> worthwhile difference for me.
>
> Bob Clerc
> @ Casa Grande, AZ
>
>
--
W. Brent Everett CFP
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