My 92 RS is suddenly riding like crap. When I'm at low speeds I can feel the whole car rocking from left to right; Imagine how your car rocks when you have a bad motor mount and that feels alot like this. I know it's not a motor mount because when I'm at a complete stop the car doesn't move at all, even when I rev the motor. I've had someone watch my wheels while I drove and they said it looked like they were all straight. Anyone have a hypothesis?