Sadly,on you tube is a report on how cheaply this bike has been made,resulting in several breakdowns.I'll sort out the reference.Having been on the receiving end of BMW's poor workmanship,many years ago,I sympathise with this owner.SEE http://www.youtube.com/watch?v=6ebo7LJKPHM
see http://www.youtube.com/watch?v=KJg751yALA0