Bear in mind that I have 8 x 18" alloys with ET42 on standard suspension and they rub on the front over big bumps (the screw in the arch liner) so I imagine any lower offset will rub badly over bumps even on standard suspension. It looks like there's very little clearance at the back on mine too but haven't had it rub yet. I fear once it's lowered, mine will rub there too :(