Probably need to lift more. You have one of the lower model year 4Runners so you already sit about 1" lower than previous years. Your PP springs should have given you about 1.5"-1.75" based on my research and about 2.5" is recommended for 285's. Also keep in mind that even with more lift, your tires may rub on your front upper a-arms if you don't have a aftermarket wheel with less backspacing. Some rub and some don't.