Check the transmission mounts and center bearing on the driveshaft. My car vibrates at 55mph because my transmission is not in great shape.
Folks, I need some serious guidance here. I have been contending with the 60mph shimmy on my '95 525it almost as long as I've had the car.
Today I took on the task of installing new Bilstein HD struts and brand new Lemforder thrust arms (which had M5 bushings pre-installed, as I was told they'd be the most heavy-duty). We just took the car for a ride, and dangit the shimmy is STILL there. The car rides much tighter, but that infamous shaking at highway speeds has not gone away.
Let me tell you what else I have done to try and solve this problem:
-Replaced all 4 wheels with new ones
-Replaced all 4 tires with new ones
-Tightened up the steering box to eliminate play
FWIW, I have not yet replaced the control arms, but from what I have read, this is most often caused by the thrust arm bushings, instead. Is that correct?
What the heck else could be causing this to continue? I'm about to tear my hair out, as I've spent so much time and money trying to solve this issue. Any advice is GREATLY appreciated!
Last edited by RenaissanceMan; 07-29-2009 at 10:20 PM.
E46 M3
E30/M50 track car
E34 525it
Check the transmission mounts and center bearing on the driveshaft. My car vibrates at 55mph because my transmission is not in great shape.
Steering tie rods, center link and idler all tight?
Ramon
1994 540iA Nikasil EAT Chip
Tampa Bay, Florida USA
Did you tighten the big nut on the steering column (above your feet and above the panel on the bottom)? There was a LOT of freeplay between the steering wheel and steering box on my car - I had like two turns of this nut to tighten her up.
Scott
1995 BMW 525i w/139K miles, EAT Chip - (Gone)
07 525i 22K, 07 328xi (41K)
1982 Mazda RX-7 w/147K miles (Back again!)
I second the tie rods. This and a good wheel balance fixed my shimmy.
Dave
10/90 Build 525im, 630,000+km, Eibach/Sachs, Engine Rebuild
*RIP Oskar the DOG *
1. Left field this; but some tyre places are dumb with our cars: Do the new wheels have the right hub diameter to seat perfectly on the hubs (maybe they just need hub-centric rings?)
... ( the cheapest solution so I said it up-front.)
2. I had the same poos with my 535 once (but only downhill under brakes), turned out to be the Lower Control Arm bushings.
3. However when the SLS in my 95 touring had the wrong fluid and a slipping serpentine belt, it also had a really weird 60mph shudder that I couldn't isolate (until I addressed the SLS) - the thing that gave this away was that it was made worse by weight in the back
I've heard of rotors being able to cause the wobbles too...
Last edited by genphreak; 07-31-2009 at 07:14 PM.
Join the Aussie 540i LE yahoo forum
08/88 535i e34 M30+miller MAF, 'stiens, tints & teeth!
For me it was rotors. List everything you have done so far
What wheels do you have now?
In your case, I would have to guess the lower control arms are your problem.
out of round tires
and everything they said
95 E34 530I V2.37
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