Re: automatic tire deflator for autocross - Saab Performance Bulletin Board - Saabnet.com
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Re: automatic tire deflator for autocross
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Posted by Robert Spahr (more from Robert Spahr) on Thu, 20 Mar 2003 00:31:49 Share Post by Email
In Reply to: automatic tire deflator for autocross, officeboy, Wed, 19 Mar 2003 22:05:39
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I don't know much about the systems you speak of, but I'm sure one could be rigged that is race worthy, although it may be cost prohibitive. Another option that is probably more viable would be to have the tires filled with nitrogen. I've heard there are places that can do this for you, but if you autocross fairly often, and if you're thinking that much into sustaining constant tire pressure I take it you are, I'm sure you could buy a tank of compressed nitrogen gas and a pressure regulator to fill the tires yourself. If you don't know already, the reason that tires can change pressure so drastically under hard use is that when the tire and the air inside the tire heats up, the water vapor in the air expands much quicker than pure nitrogen gas would. Hence, tires filled with nitrogen will remain very constant when warmed up.

The other option I would think about would be to take the tires up to pressure first, although I have never personally autocrossed so I don't know if this is practical or even possible, but it could be an option. Good luck!

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