Im going to upgrade my 97 4runner to new mud tires soon. I am for sure going to go with at least 265/75 16s. I am considering 285/75 16s as well. Will I need to do a lift to run the 285s? What kind of mileage can I expect with 285s? Right now it is bone stock, auto, v6. Also on the list eventually is a front bumper with winch and sliders. I want to make sure I still have plenty of power without haveing to regear. I do pull a duck boat around during duck season a lot but its not a big boat.