Date:         Wed, 23 Jul 2008 17:41:14 -0700
Reply-To:     "Jeff @ Autostadt West" <vw.doka@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         "Jeff @ Autostadt West" <vw.doka@GMAIL.COM>
Subject:      Re: Tire Question (not the dreaded tire thread at all)
Comments: To: mdrillock <mdrillock@cox.net>
In-Reply-To:  <4887CD06.3040605@cox.net>
Content-Type: text/plain; charset="iso-8859-1"

Sorry... I guess I was confused about what point you were trying to make.

A little revolution now and then is a good thing...

Jeff


-----Original Message-----
From: mdrillock [mailto:mdrillock@cox.net]
Sent: Wednesday, July 23, 2008 5:30 PM
To: Jeff @ Autostadt West
Cc: vanagon@GERRY.VANAGON.COM
Subject: Re: Tire Question (not the dreaded tire thread at all)


Of course it will and thus I did not comment on that part of the prior post.

Bentley page 90.30 explains the accuracy standards VW used in different
years.

It also talks about the calibration number on the face but in a very
backasswards fashion.

Mark

Jeff @ Autostadt West wrote:
> 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
>>
>>
>
>
>