The only place I could find that will rent motorbikes to foreigners who don't have a German drivers…read morelicense (I have an American M1). They were very friendly and professional, and helped me rent a BMW F800R for a 3 day trip to Nuremberg and back. They provided insurance, helmets, and luggage cases, but you'll have to bring your own safety gear like gloves and jacket. I highly recommend working with Frank and his colleagues if you are visiting Berlin and want to rent a motorbike to enjoy the beautiful countryside and autobahn experience!