'04 R1150R w/19000mi.
At about 70mph coming up a long, fairly steep grade; 6th gear; tach @ 3500; a sudden vibration.
It felt like a front end shudder, but I'm not sure of that.
I slowed and vibration/shudder left.
On the next straight away (no grade) I hit 70 again, this time in 5th gear. Same vibration.
I tried it one more time in 6th gear and it did not repeat. I did not go above 75. I was not brave enough.
I plan on taking it to my dealer, in the meantime I'd welcome your thoughts.