Hi all. Is the noise definitely coming from the rear?, I had a very similar sound in exactly the same situation i.e. when I turned fairly sharp corners I had a clunk. This turned out to be a loose steering rack, this problem is emphasized if you have had new lower springs on the front of the car. It's worth a look and if it is play in the steering rack you can remove a shim (if they haven't all been removed already!) to tighten it up again. Regards James RG England