Ok, I've changed my bushings, stab links, front shocks, and had my wheels aligned already.

Now the 50-60mph shimmy is back. Although above or below this speed, no vibrations at all.

What else could be wrong? A few E34 owners here in the Phil say that this is really the problem with the E34.

Could the Thrust arm itself be the problem, and not just the bushing? Could the lower control arms also cause this?