Guys, I have not yet seen the nut and how much thread is on the shaft. It may be that it loosens over a period causing play in the shaft and thus starting small amounts of damage versus completely letting go. Or when it loosens it does so instantly causing the damage we have seen here. Maybe check your oil for metal fragments?
I got a little warning that something was wrong a few minutes earlier. I heard like a slight clattering from the front of the bike, I was not quite sure what it was and I was not certain the sound was coming from my bike as I was in a tight formation of many bikes riding under the speed limit. I was also unable to pull over safely on the road I was travelling.
Just to be clear, my rear wheel did not seize completely until the bike had stopped and cooled down. I was still able to push the bike around albeit with some noise and resistance in the drivetrain. As I entered the driveway of the cafe to stop, the bike stalled a few times presumably as the clutch lever was having little effect and thus being in 1st at low speed with out a clutch stalled the engine.
I suspect if I had of kept riding that at some point it would have seized the back wheel or made a lot more drivetrain noise.
We GSW owners need some clarity on this. Apart from the safety aspects, 13 GSW models will be out of warranty soon, in Australia we only get 2 years. We also need to understand which year models are affected and what is the intended check/fix from BMW.