The operative words here are "properly installed" and "proper care".
From what I can tell, the PO did little more than have the fluids changed regularly and have stuff replaced that broke. The pads & rotors look fairly new so my guess is that someone has been in there not too terribly long ago.
What troubles me is that the trail of maintenance receipts has moved from dealers, to indy MB shops, to "Joe's Garage", so I have reason to suspect the quality of any work done to it recently.
I'm definitely going to pull the hubs off and at least inspect the bearings.
Kestas, what's your recommended method for determining if the bearings/races are still serviceable? Other than the obvious visual inspection, are there any other tests I should do?