Join Date: Aug 2016
Location: Coronado, CA NASNI
You would figure that BMW would have this rectified by now, I know they changed the length of some of the clutch activation rods in mid 2014 in an attempt, some owners have had luck slightly reducing the amount of mineral oil in the clutch reservoir and I've even heard of a few people having some success reducing this annoyance by tying back the clutch lever overnight or longer.
My theory as to why the clutch engagement point shifts around on this bike is that there are 3 activation rods that go from the slave cylinder at the rear of the transmission to the clutch near the front of the engine, these rods total a long run of 16.9" and they rest against one another and I think they are susceptible to plenty of variance due to temperature and lord knows what else, the slipper clutch design along with the centrifugal assist mechanism may also contribute to the weird behavior.
There is also a chance that if the clutch isn't bled out 100% completely a tiny amount of air in the system is the culprit, I say this becasue some have this issue worse than others and some not at all.