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37s are NO problem to clear with a level kit (2" or 2.5" with 1" block in back) and STOCK wheels. If you replace the stock wheels trimming will be required because of the different offset. The problem with 38s are several: 1. All the decent ones are 13.5" wide, so there you have another...

Use the KISS principle and make it easy. Unless you are are racing, slow down a bit and turn TC off. I haven't noticed the problem on my '18 even with TC off, but I don't go balls out on washboard roads, and maybe the heavier weight of the 37s helps.

But it is a beauty....

2020 Raptors are including an extra mode to combat this known phenomenon. It is called "washboard".

Keep your eyes on the bikinis and don't worry...

Running 37s, so I always run 93.

I went from a 17 F-250 to an 18 Raptor. The ONLY thing I miss is sitting up just a little higher in the F-250, but I ameliorated some of that with a level kit and 37s. I don't haul or tow anything heavy, so the Rap is better in every way for me. The Rap is so much better off-road that it is...

Awesome!

I didn't mean that it is a lot in terms of the Rap's capacity. I meant that is fairly heavy and WILL sag the rear suspension, which is what you were concerned about in your post.

Agree with your assessment. 400# is a lot of tongue weight.

What are you going to be towing? Unless it is fairly heavy, you don't need to do anything to it.

That will help your truck more than anything else. Awesome tires.

I just ordered bed and hood graphics from Rocky Mountain graphics. Will post new pics when I get those on.

I just went there and ordered hood and bed (slash) graphics, and American Flag grille letters just for shits and giggles...

Get it.

16 mixed, leveled on 37s, 38 psi, 93 octane.

7 inch lift? Wow, can you show us a pic?

Article on octane degradation: 87 is more susceptible than 93. One point per mo was just a crude rule of thumb that a marine mechanic told me years ago. https://www.sunocoracefuels.com/tech-article/octane-stability-high-octane-vs-low-octane-fuels

LOL, no rub, 16 mpg.

But....but....we runnin' 37s Bro...

Hard to find 91 in GA, usually 87, 89, or 93. Since I use Costco and Sam's, I just go for the 93.

I always put 93 in my boat and waverunner because gasoline degrades about one octane number per month of storage.

Older marine engines, yes, not newer ones though.

It's OK, really....

I have one on mine, runs 37s with no rubbing, no issues. Beautiful Ruby BTW.