[Vwdiesel] Speedometer issue

[mikitka]

One easy way to see if your speedo is correct is to borrow someones GPS. My
91 Jetta is off by 5mph, when I'm going 60mph on my speedo the GPS is
reading 55mph. It gets worse as I go up, when it reads 80mph I'm only doing
70mph on my GPS. For the longest time I thought I was doing well but
everyone was still passing me. 

Nick

-----Original Message-----
From: vwdiesel-bounces at vwfans.com [mailto:vwdiesel-bounces at vwfans.com] On
Behalf Of Tony and Lillie
Sent: Friday, September 19, 2008 11:42 PM
To: awaytothesea at yahoo.com; vwdiesel at vwfans.com
Subject: Re: [Vwdiesel] Speedometer issue

The factory size is 175/70-13 or 185/60-14. So, those tires are a bit tall, 
which will cause the car go faster relative to the speedometer.

However, there are different gears also.

Tony Hoffman

----- Original Message ----- 
Subject: [Vwdiesel] Speedometer issue


>
> Does anyone know if there are different gears that drive the speedometer 
> on a 1981 Rabbit diesel pick-up? I changed the transmission from a 4-speed

> to a 5-speed (code F0) and also upped the rim and tires from 13's to 14's 
> keeping about the same height (as I had 185/75/13, now I have 185/70/14). 
> Now my speedometer appears to be reading a bit low, but I have yet to 
> figure out how much. I believe I can go out on the freeway and see if it 
> matches mile markers, but if it's off how do I calculate the error? Also, 
> if I need a different speedo drive gear, where might I purchase one?
>
> Caleb
> 
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