Rear dampers replaced on my F10 530d @111k miles by NCB Autokraft.
What a transformation in handling...gone is the wafty ride and the rear of the car being unsettled by any minor pimple in the road, which had got noticebly worse in the last 3 months. The car feels so much more composed over uneven road surfaces.
In terms of the old dampers, one had zero resistence left in it, the other a little. But both had reached (and exceeded) their useful lives...