I have a '89 M3 for the last two years. I have boughted it with Bilstein lower suspsnsion.
Since the last month, I started to notice a noise in the left front suspension. The noise is provocated only by small irregularaties on the asphalt and travelling at low speed. High speed stability isn't afected.
I think that the cause of the noise could be a damaged top mounting strut or a damaged shock!
Someone had a similar problem?