- Oct 16, 2018
- Reaction score
- Ram Year
- 5.7 HEMI
It seems like changing the tire size on new trucks has gotten a whole lot more difficult. I recently swapped out the basic 265/70R17 (31.7") for a set of 275/60R20 (33") and now my speedo is about 4% off.
AEV told me that their ProCal module no longer works on 2020+ 1500 Classics (even with the security bypass harness) and my dealer said they don't have the ability to change the tire size on newer trucks without going through a Mopar Vehicle Protection contract called Mopar Custom Calibration, but it is not available for my 2022 Classic. (I do see that they are available for DTs and Wranglers but the smallest programmable size is a "measured height" of 33 in, which is going to be too tall for mine anyway.)
Has anyone had any success programming the tire size on their 2022 Classic?