You might look at the brake caliper on the front passenger side wheel. I
had a slight clunking (maybe a clinking noise though) that was caused by
one of the carrier bolts not allowing the caliper to full retract (or was
it fully engage?). Basically, this caused the caliper to rock/clunk as it was
shifting over the spot it was binding everytime I hit a bump.

The fix was pretty easy. I removed the caliper and popped out the guide bolt
on which the caliper was binding. Here I found a very small amount of surface
corrosion (no pitting and no big fluffy piles of rust just a very fine
sandpapery like coating). I gently sanded this down with emeory paper til
there was no more corrosion and lightly greased the bolt with moly grease
as was specified in the Bentley I believe - not enough to get squeezed out
when replacing the guide bolt into the brake carrier. I then replaced the
little boot on the end of the bolt which was torn and put the caliper back
on.

No more noise and its been 25k+ miles...

dave