Hi. The bike went to the dealership and they said one of the coils had broken down. They were specific as to which one, which the GS911 was not. The bike had previously had one coil replaced and this was a different one. BMW replaced all 4 as a goodwill gesture although have also said there are no more “goodwill gestures”
I bought two bikes, one frame number apart. Both bikes have now had all of the coils replaced. This was the third time the coils had failed, on European track holidays where I lost several days on track. Although I am told that it is the coil type not a coil manufacturing fault that has been identified. Other BMW’s have the same coils and they fail regularly on more recent models.