just to make sure that I understand thisYou wont be able to run a 285 on a -28 offset rim without getting bigger flares.
Otherwise it will hang out past the flares at least 40mm.
I tried it on mine, and found 0 offset is best.
If you going to lift the body 2", you will have PLENTY of clearance with 33" tyres.
you saying that 33" will not fit on -28 with only 2" sus liftt?
but with 2" sus and 2" body should be able to fit 33" on -28?