I have a 97 Mystique Zetec with 62,000 miles on it. Lately when driving over defects (not potholes) on the road, the car feels like it is out of control, it almost feels like the steering wheel is being pulled out of your hands. What could be causing this? I have brand new Michelin tires on it and a 4-wheel alignment. Could it be springs, struts, tie-rods....?? Any insight would be appreciated!