I had a chance to open it up a bit more last night ... I had a free stretch of motorway (again, totally legal on the German Autobahn - there is no speed limit on that stretch of road) ... 180 kmh = 111 mph. Actual about 5% lower, so just over 105 mph. Bike still has ALOT of reserve...
At that speed with no windscreen, my stomach and neck muscles were definitely feeling the speed - I need to do some exercise over the winter to get really fit for the next riding season (my bike will be taken out of service in about 6 weeks when we get the first ice
).