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Re: Going to look at a '71 B tomorrow

Subject: Re: Going to look at a '71 B tomorrow
Date: Fri, 17 Dec 1999 12:39:02 EST
In a message dated 12/17/99 11:15:53 AM Eastern Standard Time, writes:

<< I could be wrong here but isn't the "weight per square inch" (ie.,
 contact pressure) dictated by the tire pressure and not the width of the
 tire.  I would think the a narrow tire would have a contact patch that's
 longer in the axial direction of the car but not any smaller. >>

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Tire pressure is a factor, but less so than the tire width.  A higher 
pressure will result in a slightly smaller contact patch in any tire, 
therefore giving more lbs/sq. in.  A wider tire will probably have a shorter 
contact patch, but will still be wider and create a larger patch than a 
narrow tire.  Also, higher tire pressure will not make a wide tire narrower 
unless the pressure is way up there.

Allen Hefner
SCCA Philly Region Rally Steward
'77 Midget
'92 Mitsubishi Expo LRV Sport

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