I'm 95% sure it is coming from the back. It usually only happens at mid to lower speeds while turning. It's not just a clunking but actually sounds like something is rolling around in the trunk. Re-positioned the jack several times and hasnt seemed to change anything.
Any thoughts?

* rear springs and struts were replaced ~ 25,xxx miles ago

 

Wheel bearings or CV joints. Start with wheel bearings they are so common to fail its proabaly your problem.

 

The left wheel bearing was done 10,xxx miles ago, right one 25,xxx. Will inspect the cv joints for rips or tears tomarrow. Any chance it could be the sway bar? I read on a Benz forum that the rolling around sound could be the bar.

 

mhhm even with replacement it can still happen, not saying it did but verify. Cv usualy clunk or click. check the arms and sway links for wear its possible but not the usual case.