Installed 37's on Gen3 35 Raptor - no issues.

[linbackr99]

@hyrepower I have the same width wheels at a +6 and the bulge of the tire is outside the fender flare, but the blocky tread bits are in line with the flare. I haven't run mine off road yet, but no spacers or springs in my future due to the consequences for downtravel. Will report on this once I get it offload. On my gen 2, I had 3/4 total lift and didn't want any more because of the impact on ride quality offload. Hopefully this set up works!!! LOL There was exactly 12" at full droop between top of the tire and then fender flare. I'm a bit worried about then full compression room, given the stated 14" of front travel for the 35 package. That said, there is room if the articulation comes upwards at an angle, as it theoretically should do. View attachment 389561

That looks awesome. I have 37" Firestone Destination MT tires mounted on KMC wheels with a +18 offset - hoping it all works and I don't need any kind of lift!! Sounds like I should have gone with the BFGs but have always liked the Destinations a little better . . .

 

[insangsong78]

Two reasons why I want the 37s.. and 1 inch lift.
Door dings and heavier load
The stock 35 sit too low and the side steps are too low to provide door dings protection. My f150 with 2in lift and raptor takeoffs never had a door dings because the high side step blocked all the doors.
I'm pretty sure two of these combined (2 inch lift) will maintain good plush suspension and ding protection.

Yes I hate door dings that much. Looking better is just a plus.

 

[CplRaptor]

Hey Guys, I’m new to the forum and I know this question may be redundant. Has anyone run the raptor r wheels and stock bfg 37s without an issue on a 35 package? I’m mainly wondering if anyone was able to recalibrate the speedometer with forscan? I’m trying to keep the truck as oem as possible but like the raptor r wheels and the ones I’m looking at happen to come with 37s installed. I don’t want to mess with the transmission or the overall ride quality. I’ve run bigger tires on my Ford trucks in the past without an issue but I certainly don’t want sacrifice any capability with how awesome this thing is in stock form. I guess I could also just put 35s on these r wheels as well but they come with the 37s. Thanks for the help and advice.

 

[Raptor404]

Before I had a chance to install the Geiser Springs, I put on the bead lock R wheels and 37 K02’s on stock suspension. No hard running but for daily driving, there were no issues.

 

[CplRaptor]

Good to know. After you installed the springs did you adjust your speedometer to accommodate the larger tire diameter ? If you did what was your method in order to adjust it?

 

[Raptor404]

No I have not. But I need to do that. I can be lazy and take it to the dealer and have them do it. And I might go ahead and get the Ford Performance ecu upgrade.

 

[kirkb]

Good to know. After you installed the springs did you adjust your speedometer to accommodate the larger tire diameter ? If you did what was your method in order to adjust it?

You can use either Forscan or the Ford ProCal tuner to adjust the tire diameter.

 

[CplRaptor]

I like the idea of getting that done with the Ford performance ecu upgrade. Unfortunately, I don’t think the upgrade is available for the 2024 model year. Maybe I’m wrong...?

 

[taquitos]

Changing tire size in forscan is super easy. In BdyCM you change 726-15-02 to C1xx-xxxx. After that you have to run the PCM relearn to clear a DTC that pops up after the BdyCM change.

 

[hanj0208]

I still haven’t updated mine through forscan yet. I noticed it is about 2-3 mph difference.