2023 Tire calibration/Tuning

[OffRod150]

Help Please, I did some searches and didnt really see anything since May of last year. Does anyone know if anyone makes a tuner/tire calibration for the 2023 yet? I heard it may be impossible for the 23s but hoping there is someway to at least recalbrate for my 35's?

Side note,... without calibration, my speedo is off 4-5 mph, is that enough to cause fuel/trans and other issues? I seem to get some lag and horrible mileage (15mpg). Especially when pulling my 5500lb travel trailer (6-7mph ughhh) Trying to figure out if its just the 35s, (I know that is alot of it) or if the bigger tires are throwing the computer off and contributing to the mileage?

Any help will be appreciated.

2023 F150 XLT 4wd, Super Crew, 6.5' bed, 3.5 Eco

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[nikon858]

Yes, you can do it with forscan.

https://www.f150gen14.com/forum/threads/2021-f-150-forscan-list-database-spreadsheet.1578/

There’s another thread dedicated to just tire size charges as well.

 

[brfertig]

Apparently there are some saying the truck will calibrate itself by using the onboard GPS in the newer trucks. I have a 2023 as well but have not confirmed this yet as I still have stock tires for the moment.

 

[Graygoose2021]

I think Rough Country has one as well.

 

[Nickelwork87]

i need help, i tried using the tire size calculator and entered my old tire size into the green blocks but noting has changed or maybe i am retard and don't know what i am doing any help would be greatly appreciated.

 

[Boyk1182]

I have a 2023 with 295/65R20 tires, which are 35.1”. I did some trial and error with FORScan and the number you want for 35’s is 2686mm.

 

[Texaswimberley]

I have a 2023 with 295/65R20 tires, which are 35.1”. I did some trial and error with FORScan and the number you want for 35’s is 2686mm.

Which tire are you running? I have the Kendra Klever RT and it’s at 34.76” diameter. Was curious to see how far I’d be off from you. Did you change the 726-15-01 and 726-15-02 and then relearn PCM/TCM? Thanks for the info.

 

[Boyk1182]

Which tire are you running? I have the Kendra Klever RT and it’s at 34.76” diameter. Was curious to see how far I’d be off from you. Did you change the 726-15-01 and 726-15-02 and then relearn PCM/TCM? Thanks for the info.

I have BFG KO2 tires. It was a while ago but I think I followed this process, and used the GPS in the Waze app to check my speed and make sure it was right: https://forscan.org/forum/viewtopic.php?t=2650&start=130

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