Yeah, I'm on 37 inch BFG and at 70-72 I'm around 2,200-2,300 RPMs. To me I would not waste my time with 4.88's. I did 5.13's and in flat Houston I love the set up. I'm a rock crawler too and the set up it fine. I crawled with the stock 4.10's and now the 5.13's and I did fine with both.
I have 37' BFGs. They do run smaller but they have been nothing but great performers on and off road. Quiet on the road. I have 25,000 miles on them and I'd guess I have another 20,000 before I need a new set. I have done A LOT of rock crawling (in Texas, Moab, Missouri and Arkansas) and the...
I have a Memphis under-seat self-powered sub in my F150 and love it. I'm considering getting one for the Gladiator as well. You wont win any bass contests but once you dial it in it adds nice punch.
https://www.memphiscaraudio.com/product-page/sa110spd
I'm looking at RPM as well. I am wondering if anyone has tried Synergy's Front Track Bar Relocation Bracket???? I have an adjustable track bar but they "claim" their bracket changes or flattens the geometry making it steer better and better suspension travel.