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Re: Vibration In Steerign Wheel When Hitting A Bum (archive)

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Posted by brent on April 01, 2000 at 16:32:49:

In Reply to: Re: Vibration In Steerign Wheel When Hitting A Bum posted by mike farrell on March 29, 2000 at 15:18:44:

it could be a strut, but it is much more likely to be the lower control arm or upper control arm (thrust arm) bushings(s). the upper is most likely. replace the thrust arm bushings with the part for the 750i. always replace in pairs. it is an exact fit and it is a lot more durable, for about the same price. check the ball joints when you do this, as they may be worn, also. if the rubber boots on the joints are cracked, replace them and repack them w/ grease.

: : : It could be a number of things. I suggest putting it up on a rack and doing a complete suspension inspection. A leaking or malfunctioning strut will induce all kinds of weirdness into the handling of the car. I had a right front strut leaking and it took a bright light up on the rack to see it. I pulled the tire and with the suspension fully extended you can see through the spring if there is any leakage.
: : Hope this helps. Good luck.
: : regards
: : cek
: : 92 325is
: : 94 525it

: I have a 89 535i 98K exihibt the same behavior. Replaced the upper and lower control arms and bushings and installed new bilstein struts. This solved the problem and the car drives like new.

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