If you go up to a 16" wheel you're going to have to look at metric tires instead of flotation. Not sure why, but there are close to no 3Xx12.5x16 (etc.) tires out there. Almost all of them are 265/75r16. Not like it matters. I'm running 235/85r16s on my Ram. You'll probably want something like a 245/75r16 (30.5" diameter, 9.5" width)
As for wheels? don't ask me. I went for white steelies.
I gave the 30" just as an idea of what I am doing, the tires i want aren't anything special but I believe are 265/75r16. They are uniroyal laredos. Only about $105 each. I appreciate the help though. Keep me posted if you hear anything.
It doesn't matter what you drive as long as it is a JEEP.
265/75 is almost a 32" tire. It's actually within a 1/10" of my 235/85 height-wise.
For wheels I'd check out Discount Tire, Les Schwab, Tire Rack, and the rest of the tire stores, as well as some of the 4x4 websites. Somebody was advertising a buy 3 get 1 free set of Procomps w/wheels. Don't remember which store though.