255/85/16 will fit with flares etc. you will have some scrubbing on articulation, the plates that hang the rear mudflaps can be modified to reduce the scrubbing. without offset rims steering bump stops will have to be adjusted or the tyres will scrub on the radius arms. stock gearing will be woeful, torque converter on auto will absorb it ok, but manuals suffer (which do you have?) it is a bit of a try and see, some people from both auto and manual vehicles are ok with it, some change the gearing.

