vibration on 1993 Mercedes-Benz 190E

bad vibration when driving. had the propshaft balanced, new tyres fitted, brake pads, universal joint replaced nothing seems to help any other suggestions

1 answer
How about the center support bearing assembly http://info.rockauto.com/getimage/getimage.php?imageurl=http%3A%2F%2Fwww.uroparts.com%2Furo%2Fpictures%2Fpicture%2Fparts0%2F2014100581.jpg&imagekey=2240102-0&width=450