Recalibration after Leveling and Tire/Wheel Upgrading

[ericadkins]

I’m going to apologize in advance for this long technical question, but I’m a bit of a Ranger neophyte.

I recently purchased a 2024 Ranger XLT (2.7L V6). Love it, and I would love to do some minor upgrading. Specifically, I want to install a 1.5” leveling kit, and add some 265/70R17 Falken Wildpeak AT4Ws on 17” x 8.5” Method 703 wheels. Currently, I have the factory setup (255/70R17s on 17” x 7.5” wheels). However, I’m getting a bit of bewildering information about any modification process.

My understanding of the 6G Rangers is that their systems are quite sensitive. Much of what I’ve read indicates that if I change the vehicle’s stance, and increase the rolling circumference of the tires, the vehicle requires recalibration of all its ADAS systems, as well as recalibration of its speedometer, PCM, TCM/ESC, and AWD/4WD systems.

I just want to level the vehicle 1.5”, and mount slightly larger tires, which increases the rolling circumference by only 1.74%! But sources are still saying it’s enough for the vehicle to start throwing error codes. If all this is accurate, recalibration after leveling the vehicle seems straightforward, and my dealer has said they can do it. However, recalibrating the vehicle after changing to a larger tire/wheel setup appears to be more problematic. Because they’re apparently so 'temperamental', it sounds like it’s difficult to modify newer Rangers, although so many of you have done exactly that. I’ve seen some posts from other members saying, “Just take the truck to a dealer and have them update the wheel size.” But of course, Ford is saying that FDRS won't allow their technicians to recalibrate the vehicle to anything other than factory settings. So that course of action appears to be a brick wall. And it would likely be a disaster for me to attempt the same recalibration on my own using FORScan.

What has everyone’s experience been? I’ve looked through the Ranger6G forum quite extensively and haven’t seen much on recalibration. Could another option be a Ford Performance ProCal voucher ($1200-$1500 CAD)? I would very much appreciate your thoughts, advice and guidance.

Thank you in advance.

Eric in Victoria, BC

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[yoopercharged]

When I put my level and 35s on, I did the ride height recalibration using Forscan and updated my tire size with the Procal tuner. I don't believe you need to recalibrate your ride height on the XLT as they're just "dumb" monotube shocks.

It was extremely easy to change tire size with the Procal tuner and was just a matter of dialing in the revolutions per mile until the speedometer matched my GPS reading in Maps. I know this can also be done with Forscan, which is going to be a much cheaper option if you don't want the tune, but it's also going to be significantly more challenging for someone without experience. The Procal automatically updates all of the modules when you change the revs/mile, but with Forscan you have to update them all manually and risk the truck throwing codes if you mess it up.

I didn't do any ADAS recalibrations, and my adaptive cruise and lane centering seem to be working just as well as before the modifications. This may not be the case for everyone, so I would suggest you make your own educated choice on this matter.

Also, don't forget to adjust your headlight aim so you don't blind oncoming traffic. Good luck!

 

[Jason B]

I did a 2 1/2" level lift, which was actually 2" after said and done. Adjusted headlights and got an alignment. No ADAS or any other calibration. I wouldn't worry about the tire size, it's lest that 1" difference in diameter. The OEM speed cal isn't perfect.

 

[bgn]

I went up 3.6% on tire height on my Maverick and had no issues outside of the small difference in mph and odometer. The windshield camera can easily be kicked into a "learn" mode via Forscan if need be. Then all you need to do is drive it down a marked lane.

 

[White willy]

It’s very easy to adjust the speedo with forscan.
it took a couple of tries to dial it in,but super easy.
Im on a 285 tire,and while a manufacturer claims a certain diameter,there are always small variables.

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