Knock in suspension.

[Tassy1M]

Re-Posting as I had it in wrong forum

Hi all,
I'm sorry if this has already been covered,but I have a 2009 E82 125i manual Coupe with 125K on the clock. Its only a toy, not a daily driver, so when I do get to have a play, I get a knock from all 4 corners on every bump. it seems to calm down a bit after driving a few klms. Can anyone provide any advice on what part of the suspension this might be coming from. I watched a video on this and saw something about fluid filled dampers? that deteriorate? Sorry if this is vague, I do not profess to be a mechanic.
many thanks for all responses.
PS I love this car