Having owned four W123 diesels in the past several years, one thing I've found a bit annoying is the nasty stuff Mercedes chose to attach some of the interior trim, as well as some other small, but more important items.
Over the years I've had to scrape off the remnants of rotten foam adhesive in order to re-glue various bits of wood.
Well, yesterday I was in Virginia Beach, giving a friend a lift in my '82 240D, when we heard what sounded like some small object hitting the right side of the car. After a few seconds, my passenger asked me "Isn't here supposed to be a mirror over here?"
That's when I noticed the glass was gone from my right door mirror, leaving only a bit of white foam stuck to the mirror housing. I pulled off and parked on a side street so I could walk back and try to possibly find my mirror glass intact. But after several minutes I spotted a few small bits of broken mirror in the road. So we went on to our destination. Later after I got home, I discovered my right rear Michelin was now completely flat.
So this morning, I installed the spare and confirmed that a small shard of mirror had impaled the tire!
It had only gone about 5000 miles. I sure hope it's covered under Sam's Club's Road-Hazard tire warranty!

Happy Motoring, Mark

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DrDKW