If you have to accomplish fixes on your own BMW R 1200 Classic then it is always recommended to possess a Workshop Manual to keep just for a guide if you need to know proven methods to take out a particular component much like the Wheel Bearing and fit it again the right way.
BMW R 1200 Classic Workshop Manuals offers clear detailed diagnostic information with regards to your vehicle therefore if something is faulty it helps you figure out what the issue is and some ways to repair it. You can then determine if this can be achieved on your own or in the event the job is simply too big you can book your R 1200 Classic into a decent car garage.
BMW R 1200 Classic manual