Oversize tires, axle gearing changes and even different tire brands can effect speedometer calibration. In this HD video how-to, the Chrysler DRB III scan tool helps re-program 4WD Mechanix Magazine’s Dodge Ram truck speedometer after a change in tire diameter and axle gearing. See the rest of this HD video series at: www.4WDmechanix.com
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I seriously would love to find a way to adjust the speedometer calibration on my car.