If you wish to accomplish maintenance tasks on your own BMW R 100 S then it is always recommended to own a Workshop Manual for a reference if you want to know the way to take out a specific component such as the Wheel Bearing and match it again adequately.
BMW R 100 S Workshop Manuals can offer you unique diagnostic facts on your automobile so if something is playing up it can help you identify what the problem is and tips to repair it. Then you are able to assess if you can do this yourself or in case the job is just too big you are able to book your R 100 S in to a trusted friendly mechanic.
BMW R 100 S manual