This is about the perfect setup. Great look! I much prefer the 18s over the 20s due to the extra sidewall.
Question: Would a 13.50 fit with the modest trimming you performed or do you believe it would have required even more drastic trimming?
Second, you mentioned you put on the Rogue perch collars. Was this necessary to fit the 37s or was this simply because of the stance you wanted?
Thanks!
I agree on the 18's over the 20's. I wanted a little more sidewall for a compliant ride, and on a TRX, I think they look more 'correct'.
In my opinion the 13.50's will require significantly more trimming. The front bumper isnt a big deal because its all plastic, but the rear side will require you to grind down some of the pinch weld. there is a thread on here of a guy having to do that, and I think he was on a +1 offset IIRC, so a -12 is going to be even worse.
I was running the 37 x 12.50s on the stock non-beadlock wheels and they fit fine with no rubbing or trimming required at all and no perch collar, but that is because they are like a +18 offset or something. If you stick with an offset in the +18 range, you do not need to add the collars or trim at all. If you go with a +1 or 0 offset on a 12.5 wide tire, you can probably get away with either the perch collars, or some trimming like I did, but if you go -12 offset, you will need to do both. I am super happy with my setup and the amount of trimming I had to do. If I had to do it all over again I would do the exact same setup I currently have.
On a side note, I was really concerned that the rogue collars would change the suspension feel of the truck, but it did not. I would say it feels about 95% the same as stock, just a hair less loose in the front. I only installed the lower collars not the top plate and the truck sits dead level, but if you put anything in the back, the front sits a tad higher as shown by my photo. (I had my old wheels in the bed, so not that much weight, maybe 160 lbs total.)
Hope that helps. Good Luck.