On my 1996 with 1.5" body lift, 3.5" rear lift and 3" front lift, the front will rub the lower plastic bumper valance when turning. I had to cut the valance about 2-3"s. But this is more an issue when running mud tires like mine, also my treadwrights sit a little taller than normal 285's. The 285's would rub on the UCA with the lift kit since the UCA angle changes. I had to add 1.25" wheel spacers to clear.
Now thats the front, the rear at full flex likes to rub the front of the rear bumper, need to still cut some off but have been living with it so far. I just went on a 600 mile trip. Was able to get 17mpg, fully loaded, 4 people, loaded on roof and going up mountain passes. Not bad for a set of 33" tires fully loaded.
I had 265's before and just the extra tire makes offroading a lot easier. Tires make big rocks feel like curbs when on the trail.