With spidertrax spacers and lifted 3/2, I still wouldn't want to go bigger than 265/70R17's. I had to move my front fender liners forward an inch. No rubbing, but it's close.
Nitto TG's are great so far, and cheap. Oh, and a 265/70R17 fits in the spare tire well even with the big V8 tow hitch. (not much clearance, but it fits)
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