Currently, I'm running a completely stock 08 2500 4x4 quad cab. The tires are starting to wear, and I'm starting to think about what I should purchase to replace them. I really am not a fan of the stock 17" wheels or the tires that came with the truck (they just look too small for the wheel wells). When I replace the tires, I'm going to replace the rims as well. So, I'm looking for input on a new tire/wheel setup.

I plan on occasionally towing a 5th wheel with my truck, so I know that needs to be considered when selecting wheels/tires. Another thing is MPG. I really don't want to sacrifice too much in this department if I can keep from it.

As for the wheels, currently, I really like the look of the xd monsters, but I'm not sure about the size? I think I could get away with 18s without a lift, but what about 20s?

And for the tires, I'm looking for input there too. I want to get a bigger tire -maybe 33s or 35s? I like the looks of the more aggressive MT tires, but I don't want the road noise and question how well they do towing. I have heard good things about the BFG ATs and the Toyo MTs. What are some other choices I should consider?

Any advice/input is greatly appreciated.