At about 30 mph the steering wheel with rotate side to side. There also seems to be a slight vibration at highway speeds, I'm thinking related. 96 Cougar with ~60K on it. I replaced the upper / lower control arms, outer tie rod ends about a year ago. Recently (month or so) had tires balance rotated & alignment. I've been under there and seen nothing obviously loose / worn. There is a squeak from the passenger side top of spring / shock. Looking for some insight / direction on what to look for. Thanks.