BFG offers both the KM2 and the AT KO in a 33x10.5-15 size. The KM2 also comes in 255/85-16, which is a skinnier and very slightly taller size than the 285/75-16. Love mine.
Right on. I changed my LJ Rubi from 285/75R16 Cooper ST to 33 X 10.5 R15 BFG AT. I don't like 285 size (very heavy in load D and even heavier in load E), and I'm not very fond of 16" wheels (much heavier than 15" wheels).
My Jeep made a much better DD after changing to 33 X 10.5 R15 BFG. Much better gas mileage and ride quality, noticeably better acceleration and braking, much easier to pull hills on freeway in high gear.
BFG makes a KM2 in that size too, and if you need to run it on winter conditions, you can get it siped.
I'm not a fan of 16" rims, but if you wanted that, then a 255/85R16 load D(not E)
in any of several brands would be a good choice, IMO.
After thoughts: When you live in a mostly level area, the 42RLE does great with 4.88 diff gears and 33" tires like a BFG 33 X 10.5 R15.
When you live in a mostly hilly and mountainous area, that same tranny and tire size does best with 5.13 gears which is the same gearing you have now with 4.88 and 32" tires).
Keep in mind that a 4L engine does best cruising around 2400 rpm at 65 mph, or 2500 rpm at 70 mph, when tires are 33" or less. If tires are 35"+ then add 50 to 100 rpm for ideal cruising rpm.
If you haven't already done so, try my gearing calculator link. See my signature. The 42RLE has a 0.69 overdrive.