I was advised to do it all the same time, but i didnt. my car has now done 112k on the same OEM set of top mounts
I think its pot luck to b honest so i would advise to change them!
Probably right, I had a knock when was fitting coilovers so renewed everything, that was nearly 2 years ago.
Now Iv got a slight knock again, got new tyres fitted just now and gave the droplink a rattle and doesnt seem to be anything there so maybe top mounts again