The K16GT performed perfectly during my 11 day ride around the U.S. However, on my return ride home, and after 10,000 miles, I noticed what sounded like pebbles in a bag being shaken when I pulled the clutch lever in and coasted to a stop. It didn't sound "right", but the noise wasn't present while riding. That changed 300 miles later when suddenly there was a horrible clanking noise from the rear end. Fortunately there was an exit offramp nearby. As I was slowing to enter a parking lot, the rear wheel seized.
I suspect the driveshaft or universal joint failed. I thought drivetrain issues were resolved with the K1600s? Correct me if I'm wrong, but I don't remember reading about a K16 driveshaft failure on the forum. My first thought is whether the driveshaft is removed and splines lubed during 18,000 mile services? If not, that would be a contributing factor to the failure.
Rob, 2013 K16GT