Suffice it to say my 2009 gs with 70,000 miles is now on its third stator. Number 1 failed at 30,000 miles +/-, number 2 at a little over 60,000 miles while returning from Alaska in August 2018. The records provided by the first owner, I am the second, show that the dealer in GJ Colorado replaced number 1 and charged $1100.00 plus for the BMW stator and flywheel. Problem remedied forever, right? The BMW parts were supposed to fix the problem, stator plus new modified flywheel. Item 1 in the diagram at $1187.00. Supposedly fixed by 2011 on all bikes from the factory but I have seen used late model stators for sale on ebay with badly discolored windings, near failure. As I mention above, stator and flywheel number 2 were the BMW parts, and were supposed to include the new ported flywheel to improve oil circulation to the stator. The BMW dealer in GJ Colorado did not install the flywheel so the new stator lasted 25,000 miles. I have since replaced it with an aftermarket stator from euromotoelectrics.com, while stranded in Alaska summer 2018. Great people to deal with, they shipped to Fairbanks from Denver on Friday and I received the parts Tuesday morning via USPS priority mail. To prevent future failures I also devised a cooling circuit to flood the stator with engine oil to reduce operating temps. Inside the elbow is a carb jet that I resized to limit flow and maintain engine oil pressure, which it does, but still provide adequate flow to stator to drop the operating temp of the stator, as determined by measuring the temp of the cover, from 280 degrees f to about 210, essentially the same as the oil temp after it leaves the cooler. So far so good, only time will tell.