I fitted Dunlop SP Sport 9000 tyres in 205/50/16 recently on Super Aeros, and found that on rough roads I was getting rub from the back. I got some heavy duty turbo springs and Sachs Sport dampers fitted at the rear, which has brought the back of the car up a little so it looks level. The handling is transformed - it feels like a new car. The steering is spot on, almost no understeer, the car doesn't sway at all on sharp corners, and feels very solid. And there is no more tyre rub, even on farm tracks.