E46Fanatics - View Single Post - ok its offical, when i installed the nr guages it mess up my speedo
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Old 04-21-2002, 12:16 PM   #6
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Join Date: Dec 1969
Location: SoCal
Posts: 487
My Ride: E92 335i
Did you check your speedo before installing the gauges? I know my car is about 3 mph off just because the difference in tire size (going from stock to aftermarket). Find one of those online tire size calculator things that includes mph adjustment and put in your stock tire size compared to what you have now.

Just a theory...

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