Hi All,
I was driving in Baltimore today when a new noise developed in the rear of my SLK32. At 60MPH, the noise almost sounds like helicopter blades. The frequency varies with the speed of the car, and I can hear it going slowly as low as 20MPH. The noise ends when I mildly use the brakes or gas. I notice it very much when I am coasting. I also noticed that when I drive over painted lines, the noise disappears. I cannot tell if it is driver or passenger side. Any suggestions as to what to look for? Thanks!

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Black '03 SLK32 AMG