Mine did that before lowering but once I did lower it the sound was louder. I changed out the damper and it helped for a bit but never fully fixed it.

I just so happen to be driving my Dad's car since my wife's is in his shop and noticed that his does this as well. Strange thing about it? His car is a W202 C-class. He seems to think its the brake pads moving around in the calipers because the sound generally only occurs when the brakes are applied.