Interesting that you mention alignment...on the side that's lower (driver's) it looks like there is much more negative camber than the the passenger side, which appears to be perfectly straight. I sort of assumed this was because of the low ride height, but I suppose it could be out of adjustment or even bent/broken components. I was going to pull out the back seat and have a look at the upper mounts for the struts...think this would be of any help at all?

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Current cars:
2000 ML55 AMG, 174k miles
2003 C240 T-Modell, 202k miles
1995 S320, 207k Miles