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      11-17-2012, 09:04 AM   #12
M3SQRD
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Drives: E92 M3s, R56 Cooper S
Join Date: Jun 2009
Location: EC

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Every BMW I've owned has had an error between 5-8% and the error is worse at higher speeds (e.g., on the track; also, it appears the speedo "calibration" curve is non-linear). Below 70 mph my errors have all been < 5%.
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