E320 wobble
 

I've been driving my '99 E320 (140k) for a few months now and there is a "wobble" apparent as I accelerate at low speeds, especially when it is cold. It feels like the car wobbles side-to-side. It disappears as the speed increases.
I haven't put it up on the lift yet but suspect one of the following items. Can anyone confirm one?

Suspension bushings (original and showing signs of wear when purchased)
motor mounts (just guessing)
driveshaft (i would think it would get worse as the speed increases)
tires (out of balance?, they are on their last tread)

Aside from this , the car is a dream to drive on the highway (I have to cruise the length of GA about twice-a-month), it gets excellent mileage (if I can keep it under 75 mph). It just doesn't have the silky-smooth quiet ride my old 300TE did. But that isn't really a negative when you continue reading...

I am considering upgrading the suspension to AMG standards so this might be the time to do it if the suspension is the culprit.
Any suggestions as far as parts sourcing, package deals, etc. for the upgrade?

when we had a problem that felt like this... we replaced some dog bones in the rear suspension.

don't take that as a diagnosis.. but just one consideration. Motor mounts are pretty obvious... car vibrates in the front when you are at a stoplight and in gear.

I wouldn't do anything, until i got tires and an alignment.

tires
 

If the tires are worn, replace them. Belts can separate inside the tire causing the wobble. If wobble still persists after replacing tires, you have narrowed down the search and installed safer tires. Can't lose.

Along with rear links, check these ..common side wobble causing part.

http://catalog.worldpac.com/mercedesshop/sophio/quote.jsp?clientid=catalog.mercedesshop&cookieid=21H0MN3YU2980KZR89&baseurl=http://catalog.peachparts.com/&partner=mercedesshop&year=1999&product=L2030-40235&application=000409217

put car up in air and spin wheels,look for bulge in tire tread [probable cause]

Has anyone other than you driven the car recently? You may have a slightly bent rim if someone found a curb...

Also wouldn't hurt to make sure all lugs are tight on your wheels...

-GH