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I think you mean TACH. The speedo is the same ... (archive)

[ Follow Ups ] [ 5-series (E28) Message Board ] [ Msg. Board FAQ ]

Posted by Rob Anderson on January 29, 2001 at 13:50:29:

In Reply to: Speedo is 11.5% fast in 5th gear posted by TCD on January 29, 2001 at 13:09:50:

for the given speed. You have no speedo error by changing the diff, only you will be turning more RPM. Take a look at my technical articles page for a full explination.

M535i SIG Chief Technical Advisor

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