My tires on my Syncro are 225/60-16 which is 26.6" tall and I have to say
my speedometer is spot on... the 27x8.5 are a little less than 27" tall so
I would have to agree with your speedo being spot on too.

At 03:20 PM 05/05/2000 -0700, BRENT CHRISTENSEN wrote:
I have always wondered about the accuracy of the Vanagon speedo regardless
of tires, so when I passed one of those portable radar wagons that the
police use to display your speed (as a warning) I had to turn around and
drive past it a few times.

I ran past it 4 or 5 times at speeds of between 25 and 45 mph, with no
other cars aroun d.  In each case, my indicated speed on the radar wagon
display matched my speedo within 1 mph or so.  I am running the 27" BFG
tires, so I was surprised by this.

Anyone have any hard or anecdotal data that refutes this finding?  Anyone
have any comments on the accuracy of the police radar?  (I assume that with
such a large frontal area the Vanagon produces a pretty clear radar image)

Brent Christensen
'89 GL Syncro Westy
Santa Barbara, CA

-- David Marshall - Volkswagen Enthusiast - Quesnel, BC, Canada   --
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