Replacing rear control arms

[Technomage]

Hi guys,

I have to replace my both my rear upper control arms. My question is do I go with the OEM ones which are $340+ or some Febi Bilstein one which are 80 a pop. Thanks!

[dpgx5]

Hey, I ordered the Febi one but I havent installed it yet.

May i ask why and how do you know that it needs replacement? I might help others on here as well "in case of". Thanks

[mrbmwx5]

I am doing it this week.... will have some pics and DIY writ up for you guys.

[jst2878]

What symptoms give off for faulty upper control arms?

[mrbmwx5]

Originally Posted by jst2878

What symptoms give off for faulty upper control arms?

Just as same as the front control arms.Noise/squeaking etc....
Jack her up and start rocking the wheels up and down ,back and forth you will see the joint play/moving.....

[jst2878]

I wonder if this can affect toe settings. Tom, was your last alignment in specs

[Technomage]

I could tell something was wrong with the rear of my car because hear a noise in the car when I am going over 50mph. But I was at the mechanic this morning and he showed me (car was up on a lift) the wear on the arms/coilspring shim. My shim looked like it was cracking and the coil was almost coming out the shim on the right side of my car. He also showed me the wheel "jiggling" if you moved them around same symptom as what mrbmw explained. Basically if you jack up the car and try wiggle the wheel if it wiggles you have an issue, if it doesn't your good.

[dpgx5]

I was told that it also could be stuck in a certain position and you wont feel any wiggle, but that it could be worn.

[01X5Guy]

Get the DIY done? I'll be doing mine soon.

Originally Posted by mrbmwx5

I am doing it this week.... will have some pics and DIY writ up for you guys.

[mark scheurer]

Source for Febi Bilstein part??