300SE Vibration

[design guru]

I have a 1991 300SE W126 model. When the car goes above 40-50 mph the car begins to vibrate, not sure what the problem is and how serious.

My guess was the prop shaft but not 100%, I tried to look under the car but a plate covers the area, probably need a ramp.

What kind of price am I looking at to get this done?

 

[Roger Jones]

"What kind of price am I looking at to get this done?"

Who can tell until the problem is diagnosed? What mileage? Does the whole car vibrate or is it coming distinctly through the steering wheel? How rough is the vibration? I'd check the propshaft "doughnut" coupling discs first.