BuiltPowerStrokeTough
Member
I just installed a 2.5" level with 37x12.50R18s and obviously the speedo is way off. Has anyone been able to adjust for a 37 inch tire with FORScan? Ive seen some online calculations for newer F150s to add larger tires like 35s, but wasnt sure if that translates to the 17+ Super Duties. Anyone found a spreadsheet for 2017+ Super Duty for larger tire size changes? If you were able to program for 37s, did you have any check engine lights or lights on after the change? Did it cause any other issues?