The inflation figures on the door are COLD inflation numbers.

If you want the ultimate tire pressures, get the front and rear axles of the
van weighed and adjust the pressure accordingly.  Say the front end weighs
in at 2500lbs and the rear is 2800lbs (1250/1400 per corner).  Your tires
are say 1500 lbs @ 50 PSI.  The formula would be as follows:

 50     RR     50     FF
---- = ----   ---- = ----
1500   1400   1500   1250

RR (rear)  = 46.6 PSI
FF (front) = 41.6 PSI

The above formulas work out well when you are using non-standard tires sizes
like 225/75R16 which will not show up on any door sticker!

David Marshall

Fast Forward Automotive Inc.
4356 Quesnel-Hixon Road
Quesnel BC Canada  V2J 6Z3

http://www.fastforward.ca    mailto:sales@fastforward.ca
Phone: (250) 992 7775        FAX: (250) 992 1160

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-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com]On Behalf
Of Jason Willenbrock
Sent: July 20, 2004 11:36 AM
To: vanagon@GERRY.VANAGON.COM
Subject: syncro-tire pressure

hey all,
my recommended tire presssure for my 14 inch wheels on my 87 syncro westy is
36 in front and 40 in rear.  so this psi is done when cold.  after driving a
some highway miles in this heat the tires heat up significantly and the
pressure of course increases.  the increase is 4 psi all around.  should i
adjust for this increase and let air out, or is this increase taken into
consideration and allowed for?  i don't want my new vc to be working anymore
than it has to. so do i let air aout when a lot of driving is going to be
done, or just don't worry about it and make sure the psi is the same on the
rears and the fronts?

thanks
jason

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