It will depend on tire width, wheel width, wheel offset/backspacing, and how much trimming you are willing to do.

I fit 35x12.5's with 15x8" 3.75" BS wheels, 4" suspension lift, and some minor firewall hammering and plastic fender liner trimming. There was still some minor rubbing when the wheels were steered and the suspension was compressed, but no big deal.

Wider wheels and tires will be harder to fit and you'll need either more lift or more trimming, etc.

'97 4Runner, '06 F350, '86 4Runner, '05 WR450
http://home.4x4wire.com/erik