My vibration suddenly started 2-days ago. I thought that my PS rear wheel had thrown a weight, so I had it rebalanced. But the problem is still noticeable when I hit 45mpg... and the whole car shake and sounds like I'm in the inside of a drum at 60+.

The other night, I heard a clunk as I was on my way to the airport. But as I was driving in a driving rainstorm, it was difficult to make out where the noise came from. But I don't recall sensing any vibration in the car before this event. And I am positive I did not have the problem several days earlier, as I drove home from the airport on the freeway.

I've done a cursory visual inspection and cannot see any visible signs of any defects. I also had the entire front suspension rebuilt about 18months ago, and I personally replaced many of the rear suspension components approximately 30 months ago.

Any thoughts.

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Steven
1989 260E (276K miles)
1995 E320 (50K miles)