As far as I know, this doesn't work on the 2014 and under F150's. I believe it is indeed stored in the BCM, but a different location. I would set your as-built back to stock in case you inadvertently changed something unrelated to the tire size.BOSSC351 wrote: ↑Tue Feb 26, 2019 1:48 am275 65 20 Radar Renegade LT tire on a 2013 F-150. Spreadsheet shows 0A45. I input this and I am 6 MPH off. Speedo shows 70 and I am traveling at 76 per the GPS. I have tried the GPS calculation and still off by about the same. What in the world am I doing wrong?
If anyone has been able to get this to work with a 2014 and under, post up what you did so others can try and replicate it.