The dealer cant/wont tune ove a 34" or no one will,i have a set of 35"toyo M /T's on the way & need to correct mine as well,but i also have a tuner coming,i see folks with more then 34's quite often.
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I've got a 11 job 1,it came with 18" wheels,I put 20" wheels on. I need to calabrate the speedo,I searched and no results,any help would be apreceated
Here is what I use to re-calibrate tire size..the 20 is the size that comes from the factory..not sure on the 18...but see the speedo difference on far right.
http://tire-size-conversion.com/tire-size-comparison/
Ford can not adjust above the largest tire size..so the 34.1 is the largest.
I used this on my 15...
http://www.autoanything.com/performance-chips/61A3757A0A0.aspx
if you hold out you will be able to get it around 179.00 after they know you are looking for it... It will not be accurate until you mearsure the new tire on level ground and use that figure. I had 34.1.. 20's..and went to 37x12.5x20...After measuring vs using 37" and on the 3rd time finally figured out what I was doing wrong.. I used 35.75" after compression at the outside edge and she is accurate. This will save you many steps. Good Luck.
Wheel size doesn't make any difference it's tire size that does....lol
The link is showing 2 options, one for an in-line module, and one that plugs into the obd port, which did you use?
I've got a 11 job 1,it came with 18" wheels,I put 20" wheels on. I need to calabrate the speedo,I searched and no results,any help would be apreceated
Will the Hypertech unit correct for the screwed up GPS after I put my 3rd on today?