Tires.
it is all about side wall strength. some flex really well but the side wall is easy to cut, water makes this much worse.
unless you have the pockets for the crawlers, the next and I think they are still the best are the swamper sx. steel belted. mud, rocks, snow, sand, they are awesome. it helps to cut the big lugs in half. there are many write ups on how to cut them. but remember it is a balance on traction and how long you want them to last. I would not recommend them for a daily driver as the very nature of the beast they wear fairly fast, they also have a memory. if you leave your truck sit for a few weeks the flat spots are ugly when driving. it only takes about 5 miles for that to go away. but you sure don't want an open coffee cup in the holder!!.
I don't have bead locks and have not lost a bead even down to 5 psi. 8 inch wide rim with 12.5 inch tire mounted on it.
so that a side I think the sx's are the tire for toys.
rims, I have 2 inch back spaced rims and I think they are the ones that you want. my 36 inch swampers just touch the springs at full turn.
as we all like to air down at the trail head. I looked at many things. pulling the valve core... well that sucker shot over my shoulder and was gone. thank goodness for the one in the spare tire. using the screw on adjusters. well I am chatting as the thing let all the air out...
I wanted to air down fast. and I wanted to be able to measure the pressure at the same time.
so I came up with this. they are air compressor drain valves, I mount them on the other side of the rim from the valve stem. they are 1/4 inch NPT threads.
you can get them at Lowe's for about a buck each. 30 psi to 5 in about 30 seconds with 36's. so you have your gauge on the valve stem and open this valve and there you go.. I have a cheap pressure gage 30 to 0 psi, mounted to a filler fitting, to measure the pressure as it go's down
I don't know how many times at the trail head I have had folks come up and ask how I aired down so fast. then copy me.
I came up with this many years ago, posted it up and some guy copied my and posted it on pirate. so now it was his idea. he didn't grab the glory.. just how things went.

edge of rim peal back...
built them but have not tried them yet. With a 36 inch swamper, how out of balance can they be?
not the best example, usually the whole lip is twisted back into the tire.