Unfortunately for me Peter, you were right!
Before I took the car to the tire place, I rotated the tires from the vibrating end to another end and it just got worse! To be exact, the vibration comes mostly from the front passenger's side, so I rotated the two tires on that side of the car. After it worsened, I took the car to the tire place. They pulled all four wheels and determined that I had one really bent rim and another slightly bent rim. In fact, the rim that was really bent was the one that ended up in the front passenger's side after I did that rotation.
I then had to pull all four wheels, put back the original M-B wheels and had my luxury car ride restored. How those rims were bent is something I don't get. I was beginning to think I had suspension issues when it was all in the rims. And to think I paid so much money for these! This is the first time I've ever purchased used rims and it will definitely be my last.
Anyway, I have two questions:
1) Is there any facility that straightens out bent rims, or is my luck really that bad in this deal? The guy that determined the rims were bent told me that he doesn't know of any place that fixes such rims.
2) The rims in question are 16" Lorinser chrome plated rims. Do you know if these are still being sold, brand new from the manufacturer? I'm checking on this in case I have to purchase replacements. Well, actually, I'm probably better off posting this question in the wheels section.
Thanks for your help Peter. Too bad for me you were right, but I'm better off having a solution to this problem. Also, sacrificing the look of my car in order to get back the smooth ride isn't so bad now actually.
Why make the car look so nice for everyone to look at it when I don't even enjoy driving it?