my friend's car violently shakes when he comes to a full stop, at a light or parking. (not while braking)
The passenger seat will be visibly shaking and the water in his cup holders would be jumping all around. The steering wheel shakes but not as much. While driving at other speeds it's fine but not a very smooth ride. It's a 91 year model
thanks

 

maybe your friends car has a bent wheel?

 

Bad tire, bad tie rod, ball joint **** the bed. Put it in the air and look. Something's got to be out of whack.