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Re: Nitrogen in Tires
On Fri, 19 Jan 2007 07:39:34 -0500, "D.D. Palmer"
<ddpalmer@hotmail.com> wrote:
[color=blue]
>What do you folks know about using nitrogen instead of air in tires?[/color]
If they're doing it for free as part of their normal service, can't
hurt and may help with tire longevity on cars that don't get driven a
lot - where the tires rot out before they wear out.
If they charge for it, or that shop charges more than the guys down
the street for the same tires, forget about it. It's supposed to be
an added draw to get customers, not an added profit center.
Getting the Oxygen (21%) out of the air they use in the tires does
keep the pressure constant in the tires and they don't leak down as
fast (Oxygen molecules are smaller and get through the gaps in the
rubber easier) and the inside rubber lining of the tire doesn't
deteriorate over long periods of time. But IMHO the effects are
minor.
The only place you /have/ to use Nitrogen is on aircraft and
specialty tires that run at ultra high pressures and go up to high
altitudes. Airplane tires run at 300 PSI on the ground, and when you
add in the reduced pressure at 40,000 feet...
--<< Bruce >>--
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