Will I need to recalibrate my speedo?
#1
Will I need to recalibrate my speedo?
Hey - right now I have 16.5x12 rims with 39x15 Mickey Thompson Baja Belts. I am thinking about getting the 39x18's, a guy offered me a great deal on a set plus a good bit of $$ on a trade in for the tires I have now.
My question is - if I get the wider tires will I have to recalibrate my speedometer? I would assume no, since they will be the same diameter and overall height, but is anyone an expert in these matters that could verify this???
thanks!
My question is - if I get the wider tires will I have to recalibrate my speedometer? I would assume no, since they will be the same diameter and overall height, but is anyone an expert in these matters that could verify this???
thanks!
#2
#5
F150aGoGo,
This thread explains what's involved with recalibrating a 1997-1998 4R70W:
https://www.f150online.com/forums/sh...threadid=98075
The 1999 and later models require that the computer be reprogramed by an aftermarket computer chip. Or, at the dealership.
This thread explains what's involved with recalibrating a 1997-1998 4R70W:
https://www.f150online.com/forums/sh...threadid=98075
The 1999 and later models require that the computer be reprogramed by an aftermarket computer chip. Or, at the dealership.