Twoamen
Well-Known Member
Well, two dealers and two local garages cannot calibrate the speedometer. Since I increased tire size to 275 60-R20 my speedometer reads approximately 3 mph faster than stated on speedometer. Actually 2,270 mph. Anyhow nobody seems to be able to adjust for tire size. One Ram dealers tech said a service contract needs purchased then your VIN is tag as able to be adjusted for tires and gearing.
Anyone have any technical advice to challenge these dealers please advise.
Anyone have any technical advice to challenge these dealers please advise.