My 2001 is all stock and currently has 255/65/16 tires. Is it possible to go bigger with out any rubbbing issues?

 

you can fit 265-75-16's under there with no rubbing as long as you dont turn your wheels to lock and plan on heavy off road use. if you plan on doing some wheeling beyond just fire roads and trails then you will need a lift.

here is my rig running 265/75's before a lift. i drove for 2 weeks like this and had no issue on road or on some light trails.