How to use FORScan to adjust tire size

[McJanDK]

Yes.. it went from 6KM/H less to 3KM/H less... but that is because i have 195/55R16 Winter tires on right now. Original born on my car is 205/45R17 because it a Vignale So i guess it will be less then 3KM/H then with those on

[mrmrva]

I am asking because on my MK7.5 I've changed tire size and circumference in BCM and then wrote to IPC but speedo reading is unchanged. I did PCM reset as well but still no change. Strange

[mrmrva]

Does someone know if it is safe to reset IPC? I am wondering if that would help correcting speedo readings after making changes.

[boboch]

I have a 2015 f150 and change circumference in mm. I do not have a TCM to reset at all to reset. I had the relearn for the PCM did that completed successfully, then reset the DTC successfully all DTC come back with none but the PCM. U0422 invalid data from the body control module. Has anyone come across this problem? Any help would greatly be appreciated.

[bigginch]

I have a 2020 f350 dually that i put 35x12.50r17 tires on will this work for me?

[Highmtnford69]

I am a noob. I have an extended license and I’ve been using forscan for all of the easier, more useful programming for my F350 and my second GEN raptor.
I’m loving the site and software so far!
I have followed the information/instructions to a finite “T“ in this thread, and I cannot get my F350 adjusted for 37X12.5/20 inch tires. I have a 2018 F350 6.7L diesel Platinum FX4 SRW longbed. Any help would be much appreciated, thank you in advance!

[Highmtnford69]

Well, from reading most of the threads about unsuccessful speedo calibrations based on the information at the beginning of this thread… I believe that there is a problem with the information provided. And, it seems like this forum allows folks to ask questions, but, nobody is replying with any information to help. Are there any advanced/experts forscan users/programmers, does anybody know how to re-calibrate the speedo on Ford trucks using this awesome platform? Just wondering for all the masses…

[Highmtnford69]

Bump...

[rbentnail]

The problem(s) seem to be not the lack of trying but with the subtle differences in different models and yrs. What worked on my 2013 STX hasn't worked on other model yrs nor even on the same yr but different vehicles. There's lots of suggestions out here from lots of people- maybe folks just get tired of answering the same questions over and over. Sorry to say, there doesn't seem to be a single answer that works for everyone. And let's face, your vehicle isn't one that alot of people own and can advise on.

viewtopic.php?f=13&t=2650

viewtopic.php?f=16&t=17008

viewtopic.php?f=5&t=16100

[Highmtnford69]

The problem(s) seem to be not the lack of trying but with the subtle differences in different models and yrs. What worked on my 2013 STX hasn't worked on other model yrs nor even on the same yr but different vehicles. There's lots of suggestions out here from lots of people- maybe folks just get tired of answering the same questions over and over. Sorry to say, there doesn't seem to be a single answer that works for everyone. And let's face, your vehicle isn't one that alot of people own and can advise on.

viewtopic.php?f=13&t=2650

viewtopic.php?f=16&t=17008

viewtopic.php?f=5&t=16100

thanks for you're reply