I am currently running an old set of these on it.
BFGoodrich*All-Terrain T/A KO
So old they are not even listed anywhere. They will wear out soon enough. They were given to me mounted on stock 3rd generation rims, long before I purchased the truck.
I have a set of these, also mounted on stock rims.
These are not so old and at least 50% tread. I was in the right place at the right time and paid $100 with caps and lug nuts. They go on next.
Note that these are all stock sized 265/70-17. I won't buy other than that size because of towing the 5th wheel. Anything that lifts it up is no bueno.
Lastly, the truck came with 34" Nitto grapplers similar to these on black rims. Sexy but not practical for towing the 5th wheel. I will probably sell these as they are 90% tread and have some value.
Nitto Trail Grappler M/T - LT285/75R17
The steering is all new now, and works great. New box, steering stabilizer, new linkage. New ball joints.
It had a weird "tipping in" to a turn that was cured with the new ball joints. Now it is very similar to my 2wd in feel.
I ordered up a 3 micron filter and base for less than $50, they will go near the tank. The late trucks have a decent electric pump in the tank, but I will also install a fuel pressure gauge at the CP3 pump to make sure it stays happy. This 3 micron pre-filter will be changed often, and the factory ones left on the engine and changed less frequently.
When I get the parts in I will fabricate a mount and hoses, and cut into the fuel line.