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-   -   FORScan tire size issues (https://www.f150forum.com/f38/forscan-tire-size-issues-449045/)

Brodden01 06-11-2019 09:30 PM

FORScan tire size issues
 
I need help with FORScan. I'm trying to change the tire size from a 275/65r18 to 275/70r18. I thought I was supposed to change 726-12-01 to like 09ff but it didn't allow that. I do not have access to the laptop used until tomorrow.

LexPD 06-11-2019 11:11 PM

I don’t believe anyone has gotten forscan to actually change the tire size. I think the only way anyone has gotten it to work on a sub 2015 model is by using a programmer.

M0RRIS 06-11-2019 11:48 PM

The sticky at the top should have the info you seek.

jdunk54nl 06-12-2019 11:18 AM

Worked on my 2014, but 2011-2013 haven't had success.

LexPD 06-12-2019 11:24 AM


Originally Posted by jdunk54nl (Post 6228099)
Worked on my 2014, but 2011-2013 haven't had success.

Interesting. I didnít know it would work on a 2014. Do you know what the difference is between 13 and 14 that would make it work?

i successfully stopped hyperflash with forscan. Maybe Iíll give the tires a shot to see if Iím lucky. I know some 2012 and 2013 guys were unsuccessful with hyperflash removal. I know the most recent update added a lot of plain English settings compared to previous versions. Maybe thatís why I was successful removing hyperflash.

jdunk54nl 06-12-2019 11:30 AM


Originally Posted by LexPD (Post 6228105)
Interesting. I didn’t know it would work on a 2014. Do you know what the difference is between 13 and 14 that would make it work?

i successfully stopped hyperflash with forscan. Maybe I’ll give the tires a shot to see if I’m lucky. I know some 2012 and 2013 guys were unsuccessful with hyperflash removal. I know the most recent update added a lot of plain English settings compared to previous versions. Maybe that’s why I was successful removing hyperflash.

No clue, it might also be late model 14's compared to early models. My truck production date (or at least in service date) was July 2014 so it might have been close enough to the 2015's production that it got some of the different circuitry.

LexPD 06-12-2019 11:31 AM


Originally Posted by jdunk54nl (Post 6228111)
No clue, it might also be late model 14's compared to early models. My truck production date was July 2014 so it might have been close enough to the 2015's production that it got some of the different circuitry.

That would make sense. These trucks and their electrical system are confusing and frustrating.

Spiky 06-12-2019 12:20 PM

The "plain english" settings in Forscan have nothing to do with it. That just means the programmer is confident enough in a particular value change to make it a menu item. It is still doing the same work, changing a hex value in the Ford module, you just don't see it directly. It's all based on the Ford hardware, whatever the differences are.

LexPD 06-12-2019 12:51 PM


Originally Posted by Spiky (Post 6228171)
The "plain english" settings in Forscan have nothing to do with it. That just means the programmer is confident enough in a particular value change to make it a menu item. It is still doing the same work, changing a hex value in the Ford module, you just don't see it directly. It's all based on the Ford hardware, whatever the differences are.

No Iím clear on that. What I meant was the developer had confidently found the appropriate values to make the changes. In other words, maybe the developer was able to successfully find the correct formula to make the tire setting change functional.

Spiky 06-12-2019 03:07 PM

Rnlcomp has posted that IDS also does not work. It's a Ford problem with how the PCM responds to the different kinds of access.


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