[AT] OT truck tires/driveshaft?

[Stephen Offiler]

Nitrogen is mostly a marketing scam.  (And I know because my career is
related to the sales of automotive tools and equipment for repair and
maintenance).

The ONLY reason it is more stable than ambient air is because nitrogen is
dry, whereas ambient air has humidity.  It's only the water vapor component
of regular ambient air that creates unpredictable pressure changes when the
tire temperature gets above/below the dew point of that water vapor.

It can be an issue for race cars that are very sensitive to tire pressure
and pressure changes.   It is a non-issue for normal vehicles on public
roads.

SO




On Fri, May 16, 2014 at 7:00 AM, charlie hill <charliehill at embarqmail.com>wrote:

> John, I'm sure it is better to use Nitrogen but I'm betting the positive
> effects are minimal in a tire.  I could be wrong.
>
> Charlie
>
> -----Original Message-----
> From: jtchall at nc.rr.com
> Sent: Friday, May 16, 2014 6:20 AM
> To: Antique tractor email discussion group
> Subject: Re: [AT] OT truck tires/driveshaft?
>
> Don't know what the percentage change is but nitrogen is supposedly more
> stable when it comes to temperature change. Some of our CNC Milling centers
> at work use a nitrogen filled counterbalance, of course they are running
> several hundred PSI. These machines date to the late 90's, long before I
> heard of anyone putting it in tires.
>
> John Hall
>
>
> -----Original Message-----
> From: charlie hill
> Sent: Friday, May 16, 2014 2:45 AM
> To: Antique tractor email discussion group
> Subject: Re: [AT] OT truck tires/driveshaft?
>
>   As far as
> the nitrogen inflation, in my opinion that is a scam to begin with.  Yes
> nitrogen is more stable than air but earth's atmosphere
> is nearly 80% nitrogen to begin with plus about 15% Oxygen and some other
> minor, mostly inert gasses.
>
> Charlie
>
> /at
>
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