Subject: [200q20v] Speedo off

C1J1Miller at C1J1Miller at
Thu Jul 27 17:09:55 EDT 2000

I'd also expect the spedo to read a hair higher on worn tires versus brand new, and to vary among brands a bit... plus higher speeds tend to exagerate the amount it seems off (let's say the spedo is about 3% off; at 30mph that's about 1mph; at 100 that's about 3mph off, at 120 it's 4mph off.  If it is 6% off, at 30 that's 2mph, at 60 thats 3.5 mph off, at 90 thats 5.5 mph off).

If it is noticeably off on those "measured miles" then you're probably in need of an adjustment.

In a message dated Thu, 27 Jul 2000  4:01:48 PM Eastern Daylight Time, "Glen Dustin Powell" <gpowell at> writes:

I'll make a guess here that Audi does this intentinally for
liability purposes. They don't want to be sued 'cause someone
gets a speeding ticket and tries to blame it on speedo error,
they want to 'off' on the safe side. Some sno tahrs are also
larger diamater and they need a safety factor here too.


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