I think this is done in the maintenance menu on the cluster.I assume Forscan allows for changing tire size from xl tire size to a Lariat rim/tire size.
Depending on what size tire, you may not need to do anything. The outside diameter can be the same if you just get lariat size over the xl/xlt size since it goes from 65 series to 60 series (online tire shopping can show what plus size can be done to stay the same - like a sponsor here discount tire or tirerack).I assume Forscan allows for changing tire size from xl tire size to a Lariat rim/tire size.
Check out my Ultimate Forscan Spreadsheet ! Look for "Adjust OEM Tire Size". you can change to one of the 4 factory options easily. There is a way to set up custom tire diameter too but it is a bit more experimental!Ok. I know it’s done with Forscan on the Bronco.