You can get an approximate (+- 1%) answer at
http://www.volkswagen.org/tiresize.htm you have to remember that this is
100% correct if you do the math, but different tire manufacturers have
variations between other manufactures when it comes to the same size of
tire.

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 Andy Zappe
Sent: April 29, 2002 7:47 AM
To: vanagon@GERRY.VANAGON.COM
Subject: tire size

anyone know what the formula is for changing mpg and speedo readings when i
upgraded to 265/15 tires.

andy
80 vanagon L
85 westy