I'm going to explain exactly what i've done to my car. Recently had a new rear subframe fitted, and since then the car had developed a wobble at the rear end. I'd feel it when turning corners and not so much in a straight line. Took the car to have a "geometry" done, but watching them it looked more like a 4 wheel alignment. Car no longer wobbles when turning but does in a straight line, it feels like i'm towing a caravan that is fish tailing. This only happens at like 50mph and above, but only when the road dipps or if i hit a bump. When i drive with the window down a can hear alot of creaking and when driving over speed bumps i get a clunk as the back end drops.
This saga has gone on long enough, can someone please help! :)