My experience with 4 Syncros was that the speedo was optomistic on all
of them by about 5-8mph at 70. True speed was 65 or less. Putting on
215-75-15 wheels and tires made it almost exactly right on. Now when the
speedo says 70 I'm really doing 71.

Mark

Noto-Gaudette wrote:
>
> Per Lindgren wrote:
> >The thing is, on both of my Syncros, the radar showns 69 kmh
> >when the Syncro speedo shows 80 kmh. Way off, in other words.
> >Any other noticed this? Will this be better with 215/75R15 tires?
> >
>
> I think so, if your current tire is smaller in diameter than
> 215/75/R15--unless 215/75R15 is so large that your speedo reports a
> speed significantly *under* your actual speed. I don't know if this is
> possible.
>
> For comparing diameters, check out Coyote's tire diameter chart:
> http://www.vanagon.com/info/faq/#tires
>
> I haven't looked into how to adjust the speedometer yet.
>
> -George