Even though I have my doubts about their success rate, I also know that some of them will keep going. Even though my hearing isn't perfect, my 2009 E91 320D has reached 192k without any issues, and I haven't heard a rattle as of yet.
I'm still deciding whether to keep the car or sell it. If I'm going to keep it for a few more years, I might as well get it done so I can rest easy.
I was wondering if anyone had experience with the AB Auto Repairs shop in Chard, which is close by and appears to have done a number of N47 chains.