BlownV8

Does anyone know if the rear 210 suspension control arms specific to the E55 or are they the same across all 210 E's?

cm60k

Yeah, all W210 sharing the same control arms & rear sway bar control arms(which is plastic),,

Except 4-matic's; which has differ front control arms & differ rear sway bar control arms(which is metal)..!

ZAYED,,

BlownV8

OK, problem one eliminated.

Problem two. After getting the control arms replaced, the car seems like it is all over the place. Case in point, if I hit a patch of road that has grooves from trucks, the car literally feels like it is going to be tossed off the road. Is it possible the shop installed incorrectly or what could be causing the issue?

benzokirk

I would start by asking:

1. the brand and health of your rubber
2. how does it drive on roads that are simply paved (no grooves)? and
3. is there a difference between wet and dry driving?

cm60k

Agree with "benzokirk",

Is this issue happened after those Arms installed, if so,,

they may installed those Arms wrongly, especially center one & vibration Rod..!

ZAYED,,

Tall Giraffe

Your symptoms seem like what happens when you have bad LCA bushings in the beginning. If your tires are in good shape and your upper ball joints are not the prob, maybe look at your tie rods inner and outer.

BlownV8

Yes, I am getting a weird vibration at certain rpm loads. Tires are good, no difference wet or dry, and only happens on grooved roads.

Does anyone have a DIY for the rear control arms so I could inspect.

cm60k

Did you check if there any loose bolts, during installed arms..??

ZAYED,,

BlownV8

No, I have not checked for loose bolts.

cm60k

As you know; bolts goes through bushings,,

if any of these bushings went bad, they will moves easily when you hit any kind of grooves or humps..!!

ZAYED,,