Recently, while at a local coffee shop, a fellow rider brought in the current issue of Motorcycle Consumers News (?) or Guide. There was a article talking about the issue of BMW final drive failures. I found it to be a very interesting article, and few covering the topic and having a place to log your own failure into a database. The piece even mentioned that BMWMOA chose to not be an advocate for their members and noted simply that it was a community forum for it's members - a claim that I felt was pretty lame for MOA.
That said, I found this site to log your own failures if you had one.
BMW Final Drive Failure Website
BMW Final Drive Failure FORM
BMW Final Drive Failure List