While driving the rear view mirror suddenly tilted downward (drooped). What happened, was that the tension ring popped off. As it turns out, this is a known issue per internet Mini Cooper pages. On hot days the ring loosens and, since the design does not include anything to prevent the ring from sliding off, it does slide off, resulting in the rear view mirror drooping. I reinstalled the ring. This occurred again the next day. I ended up uninstalling the rear view mirror, reinstalling the ring and gluing it in place. Thus far this has held.

- San Leandro, CA, USA