5thGenRams Forums
Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!
hypertech
-
Speedometer calibration
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...- Twoamen
- Thread
- bigger tires speedo correction hypertech speed correction speedo calibration speedometer calibration speedometer correction
- Replies: 220
- Forum: 5th Gen General Discussion