Your input on Vibration cause

[Dado 540]

When driving between 80 - 120 km/h i get vibration in the steering wheel.

i had the tie rod assembly changed, control arms changed, rims changed, front rotors changed...what could be ther reason for this shaking. i havent gone to the dealership yet, i wanna see if you guys got any input on this issue.

As long as i stay below 80 or above 120 it goes smooth wihout any vibrations. As soon as the needle passes 80 the steering wheel starts to dance left to right.

Help me out thanks!

[bscarlett]

You may also want to look at the thrust arm bushing.

[MLue1]

Originally Posted by bscarlett

You may also want to look at the thrust arm bushing.

+1 those symptoms usually point to a BMW shimmy problem caused by worn thrust arm bushings. Depending on the condidition of the thrust arm(s) you can replace both the arm and bushing or if the arm was replace not too long ago just do the bushings.

[Gamite]

you might wanna try re-balancing wheels. I've had bad tires cause it too

[MLue1]

Here are the thrust arm bushings that I ordered for my E39 from Bimmerworld. Item #1 on the picture.

http://store.nexternal.com/shared/St...t=products.asp

[Big Chin]

Originally Posted by Gamite

you might wanna try re-balancing wheels. I've had bad tires cause it too

Used to work at a tire place... Most of the time after a balance and rotation normally fixed the problem... it can be as simple as 1 under inflated tire...

[MLue1]

Here is a write up that contains some diagnostic info on identifying thrust arm problems. The remove and replace section is a bit long winded but helpful, there are easier ways to remove the bushings.
http://www.beisansystems.com/procedu..._procedure.htm

Here is another one that shows how easy it is to install the PlowerFlex bushings
http://www.bimmerfest.com/forums/sho...d.php?t=233926

[Dado 540]

thank you all for the suggestions. im gonna have the bushings checked out.

[brice540iit]

You're due for a suspension overall...
Instead of doing it piece by piece, you better off doing it all at the same time.
You'll apreciated the feeling of having a brand new car feel....
If you have 17" or bigger wheels, you may have a bend rim.
B.