Largest size tires on 3in lift

This depends on your definition of "fit". Are you looking to only drive around on the street with no off roading? If you plan on going off road and stuffing the tire you will need to cut the body mount, bash the pinch weld in, bash the firewall in or cut and reweld, get an aftermarket bumper or cut the stock one up. If you want to use all of your upper travel then you will also need to "massage" your fender apron. I fit 35x12.5R17 MTRs on less than 3" of lift without rubbing but it took some work.