Well, it's the tires folks. They were simply out of balance. That is the first time the Mercedes dealer did not do a good job of balancing. I am impressed with the new Hunter machine. It checked the wheel AND tire for everything imaginable.
But, the guy at the tire shop said he had wheel weights for a Mercedes and come to find out, he didn't. He ended up using stick on weights on the inside of the wheel. He said he would order some proper weights and redo the job at no charge. I have heard that the stick on weights are not as good of a balance as weights on the inside and outside of the wheel (though it did do a theoritical dynamic balance with two sets of inside weights - one on the inside edge and the other as far out as possible). Anyway - now it is as smooth as silk.

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1995 S-350
370K + SOLD
1952 220B Cabriolet
39K kilometers + SOLD
1998 E300D
310K +
2012 E350 BlueTec
120K