The fact that they were talking about the spare tire rack fitting 37s makes me think yes when combined with one other fact:
- The Raptor is 6inches wider, in order to accommodate 35s.
There's "fitting" the tire into the wheel wells and the bodywork, but the concern is the "jounce" aspect.
When the truck gets jumped, and the tires get pushed up into the bodywork, NOW what tire fits.
That is a much different demand than the "Does my tire rub in the parking lot at full lock" standard.
When this 6,500lb beast gets jumped and the tires get pushed hard up into the body,
NOW what fits.
The raptor is designed to fit those big 35in tires, with the bounce, with the travel, etc.
It's 6in wider.
The TRX, is what, 8inches wider?
Not an accident, like everything else on this truck, it was on purpose.
I think they can take a 36 or a 37.
The tradeoffs: Now it can't do 120mph, might effect the load rating, the heavier tires will effect the payload (Add 10lbs per side and now we're "down" to the 1200s), and the 0-60 won't be as fast.
All those things would effect the bragging rights vs raptor, and the absolute pistol-whipping the hellcat engine is putting on the ecoboost.
It may also effect the traction on pavement in terms of cornering, launching, absolute speed, etc.
It will probably eat mud terrain tires in burnouts by accident
My guess? sight unseen? Yes it will fit larger than 35s, and if you do it, it's your choice with the tradeoffs associated with doing that.