My 540 tourer has done 54K miles and I have noticed rattles in the
> doors etc. My 535 had done 130K miles but it wasn't a tourer and it
> rattled less than this car. What is a ball park mileage figure for
> replacing shock absorbers on a 6 year old 540?
The doors shouldn't rattle, period. Perhaps they've been stripped down for accident repair and badly re-assembled. Building up doors so they don't rattle is a skilled job.