'96 C280 Driveline Vibration when Cold

[erainwater]

Hello, all,

I have a '96 C280 (W202) with 112K miles which is experiencing a mild driveline vibration from 60-70 mph when cold. After driving about 3 miles, the amplitude of the vibration decreases significantly, but is still perceptible.

Thus far, I have balanced tires & wheels, replaced brake discs, and replaced both front and rear flex discs. Transmission fluid level is verified as normal.

I would be grateful if someone could give me some insight on a possible cause and solution.

Many thanks,
Edward