I had 285/75-16's on mine with the stock setup only had a little rubbing. I would think you could fit a little bigger, maybe.

Lygriek


Lygriek, aka Michael
2003 Montero XLS GEN III, 285/75R16 Pro Comp Xtreme MT's
Ironman Springs/KYB Shocks. Custom Rocker Protection and Bumper.