Tire size will directly affect the speedometer accuracy, irregardless of
where the speedo cable hooks up.

Jeff

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com]On Behalf
Of mdrillock
Sent: Wednesday, July 23, 2008 4:43 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Tire Question (not the dreaded tire thread at all)

Sorry to nitpick but the number on the face is for the number of speedo
cable revolutions per increment of distance, miles or kms. On 2wd
Vanagons the cable turns at the same speed as the left front tire so
your answer works. Most other VWs, including Syncro Vanagons, use a
cable driven from gearing inside the trans or front diff and so these
take speedos with a much different number even though they may use the
same size tires.

Mark

Todd Last wrote:
> If you look closely in your Bently manual, it states that it is federal
law that all US vehicles speedomers read less than the actual speed - up to
a 5% difference is allowed as of 1997.
>
> (of course changing tires will effect how your speedo reads.)
> The number at the bottom of your speedometer is how many revolutions per
mile your speedometer is calibrated for at the factory.
>
>
> Todd
> '88 Westy
>