TECH12 Posted June 11, 2017 Report Share Posted June 11, 2017 I have a R53 Mini Cooper, I have a link G4+ extreme connected to a Dash2 Pro. I'm witching from 215/45/17 tires to 225/45/15 tires so i know the speedo is going to show a faster speed than i'm actually going. Is there a way to make this correction in the ECU? Quote Link to comment Share on other sites More sharing options...
Simon Posted June 11, 2017 Report Share Posted June 11, 2017 (edited) You can correct the driven speed using the driven wheel speed correction %This is found in the chassis and body section in speed sources Edited June 11, 2017 by Simon Quote Link to comment Share on other sites More sharing options...
TECH12 Posted June 12, 2017 Author Report Share Posted June 12, 2017 The equaton is Calibration Number = (Number of Sensor Teeth / Wheel Diameter in meters) * 31.83...With my new diameter 15" which is 0.381 Meters.How do i figure out the number of sensor Teetch? Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 12, 2017 Report Share Posted June 12, 2017 No, you must be looking at DI input calibration. For your car where the wheel speed comes in via CAN bus you only have a % adjustment. So if your speedometer is now reading 5% too fast then you put -5% in the driven wheel speed correction % field. Quote Link to comment Share on other sites More sharing options...
TECH12 Posted June 13, 2017 Author Report Share Posted June 13, 2017 (edited) Thanks, so i will go to the chassis and body section and correct the speed -5% Edited June 13, 2017 by TECH12 Quote Link to comment Share on other sites More sharing options...
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