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      11-18-2013, 07:03 AM   #10
cwickberg
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Drives: X1 35i MSport Ultimate,
Join Date: Oct 2013
Location: United States

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Quote:
Originally Posted by Robocheme View Post
Aren't both the speedometer and the odometer readings based on the same things, the wheel rotation and tire diameter?
That is the raw data, from there it gets modified by an ECM. You can recode your car to change tire diameters and also change the readout on your speedometer if you want to... It is data manipulation. AFAIW, the odometer is accurate
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