So the Lift carries the truck 3 inches higher over the axle/ifs which allows greater tire size due to the added room. Are the wheels wells (front to back) the limiting factor after the lift is installed?

Basically, I am interested in putting a 285/75/16 BFG AT on my XTERRA. I need to know what hoops I am gonna have to jump through to do it and if a change this large is gonna put the truck on par with a Hummer as far as acceleration