2010 F150 Tire Size Change With Forscan Issues

[brandongarnold02]

I can’t find much into out there about changing the tire size in the VID block. I currently have 35” tires and have tried to change the tire revs in the VID Block only to get a P1635 fault. I’ve even tried to just tried to make it an even 600 to see if that would make it happy. The factory setting is 650 revs. I have notices the factory settings for the gear ratio is incorrect or not configured. Also I have a little piece of info from ford service info that explains there is only a certain range limits set on things like tire and axle ratio. Of course they don’t give you those range limits.