Mayf; Roundy round racers used nitrogen in their tires for years
because that is what you run your air guns on for pit stops. So you
always had a bottle or two around the shop or pits. Nascar does not
allow air bleeders on the wheels, so we found out that nitrogen will not
build up pressure under heat near as much as air.
Doug Odom in big ditch
DrMayf@aol.com wrote:
>
> The NASCAR guys use Nitrogen in there tires, accoreding to a response from a
> fan question, "because it is more stable. Air contains water wapor in
> quantities that are different every day. This makes control of pressure
> extremely difficult. So we use nitrogen to eliminate that." This was a
> paraphrasing since I am old and cannot remember much. But the main reason was
> water vapor (i.e. humidity). Just another thought.
>
> mayf
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