Correcting Speedometer/Tire Size in Forscan (15-17 F150) 

Thanks my man! I'm just studying up on Forscan and one of the things I need to do when my ODB2 adapter gets here is change my tire size to the exact tire you did in this video. I've had these 33" tires on my 2015 F150 for 30,000 miles already so it will be nice to get the speedometer finally calibrated. Plus the check engine light came on after about 89,000 miles for the first time. I appreciate your video?

Worked like a charm on my 2020 f150 35x12.50r20. Used the ridge grappler size and it was dead on. Thx!

Just wanted to add I have a 2020 XLT With 35” Toyo open country At3 6.5” lift. I set my tire diameter to 2681 and it was dead on. 2355 was what was set originally. I started with the diameter google suggests and since every tire is different I had to play around with it. I dropped it from 2791 to 2681 in increments of 20 mm till it matched the gps speed on my phone and radar detector.

Just set my 305/55r20 code "0A02" and worked flawlessly!!! Thank you !!!

Dude, you're awesome. Thanks for providing the links to the spreadsheets

Thank you sir! this has my speedometer spot on! great video

Thank you for a thorough and most informative video!

i have a 17 10 speed ecoboost and after i tried the relearn the wrench didn’t go away i don’t know what to do now

I did everything explained in the video and could not get the DTC to clear. I had to revert back to the prior settings. It would be nice when you post the video to please answer all the questions that are posted afterwards. I would like to know how to make this work for my 2017.

amazing, thank you!

I have a 2011 F-150 XL 2wd and it has tires that are roughly 1" taller than stock. Original size was 235/75r17 now has 265/70r17. Truck was fine but after I had the transmission reprogram recall my speedometer reads 10mph fast. At and indicated 70 mph I'm only going 60. The dealer said it's because of the tires but the tire shop said a taller tire will make the speedo slow not fast. Has anyone else had issues after this recall?

Hi dear Please Bdycm is not showing while i am trying the process do you know how to fix it u have mustang 2014

Great video, thank you!

Hi, i still. Have wrench after doing the pcm relearn

Any idea how this might be done for older (early 2000's) Ford trucks? I have a 2003 and Forscan only reports one parameter in the as-built module reading. Also, tire size in a 2003 is not in the BCM, but rather the PCM.

Very helpful. Thanks.

If I have the same 35x12.5 but a 22 wheel instead of a 20 will it make a difference?

Would you possibly know if forscan would be able to fix speedometer on a 2001 ford Escape.

Hello there, Im planing to go from 275/55R20 to 33x12.5r20. If I follow your video and make all the adjustments in forscan I do not have to re gear or tune my truck correct?

Hey, So to "run" the module initiation/relearn vehicle data I assume after you select it, you hit the Play button on lower left? Everyone always says run it but never explain how to perform this.

Thanks for this video! Question - what sync version did you select after starting the software the first time? I have a 2015 f150 lariat - would that be version 2 or 3? I heard that all 2015+ should select v3 but i couldnt verify. Thanks for the help!

Anyone know if this is the same for Ford 6.0? (250/350). Spreadsheet seems to indicate at least mustang is values are correct by calculation.

Hi sr,I installed raptor tires 315/70/17 in my F-150,What numbers do I need to put in forscan for a correct calibration,

I need to change the low miles from a new IC to the right ones in the vehicle which are a little higher I do not want to lower them but to make them higher. How do I do it on a f150 2015 xl

Thanks for this, im new to forescan, well to doing it myself. I imagine it makes no difference if the tire size is with a level, lift, or stock suspension? Will it still work the same as far as speedo/odometer/gas indicators being calibrated?

I still have the wrench on the dash after al the steps

I want to try to add a tpms device to my air ride suspension system but the default pressure threshold seems to apply to two tires at a time. Any way to individually set a tpms threshold? And, any way to add two tpms devices to my ‘16 f150 Lariat? Good video.

In my 2020 f350 it doesn’t have the relearn at the top of screen so I can’t reset the wrench. Any ideas?

I just did this two days ago and I got that wrench and I panicked and restored the code lol thanks for the info man. I have a 2019. But do I need to undo this if I have the truck serviced since I am under warranty.

hey dude.. nice video.. very infomative... do you know if there is a way to have different size tires on the front than those on the rear. I tried it, and it threw all kinds of warning lights and codes (hill assist, back up assist, traction, TPMS and no e-brake).... all these codes from just putting wheels off my 2006 F150 (20x9 on 275/45r20 and 22x10 on 305/45r22 tires)... we are dealing with a 2018 F150 XLT (5.0 w/10 speed)..... any help would greatly be appreciated... thanks... I hope you are having a great 6th of July...

Any way I can do this on my 2011 f150?

What is the link to the 2 tire size calculators

Will that calculator work on a ranger i have a 2000 and i need to fix my speedometer

Anybody successfully calculate and program 37" tires???

Does this also work for 18/19 model year F150s?

Will this work on my ‘18?

Is there a tire size spreadsheet for the 2011MY?

Anyone knows something similar for Ford Fiesta mk8 ? Cheers

How to apply on KM models?

So where can I find the spreadsheet of tire size info? Link please.

Just got new wheels and tires for my 18 f150. 305/55R20. I changed the tire size in forscan and I got the yellow wrench on the cluster? What do I do to get rid of it?

I cant get my wrench light to go away no matter what i do. can someone please help? i have done the relearn multi times and no luck,

Who the eff would name it ForScan.