<E34> 91 535i Vibration Problem

[ingraham@xxxxxxxxxxxxxxxx (Curtis A. Ingraham)]

In BMW Digest v09.n1091 Chris Ciechon <CCiechon@domain.elided>
wrote:

> I have a '91 535i auto with a slight vibration problem at 65 mph. 
> I had the tires balanced, and that did not improve the situation. 
> Anyone ever have a problem with driveshaft balancing resulting in 
> a vibration like this one?

Sometimes a vibration remains after an ordinary tire balance, then 
disappears after a very careful balance.

An unbalanced driveshaft usually makes itself known at lower speeds.

Your problem is almost certainly worn thrust rod bushings.  The 
symptoms are a consistent vibration in the steering wheel at a 
particular speed in the 50-65 MPH range when the brakes are not 
applied (braking sometimes damps the vibration) and which is not 
caused by bent wheels or unbalanced tires.  This is a very common 
problem with E34 cars.

Curt Ingraham
'72 2002tii
Oakland, California

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