If you wish to perform maintenance to your BMW Rockster then it is always a good plan to possess a Workshop Manual to use as a guide in case you want to know simple methods to strip off a specific component like the Drive Shaft and match it again successfully.
BMW Rockster Workshop Manuals can provide certain diagnostic guidelines for the vehicle so if something is playing up it can help you ascertain what the problem is and how to resolve it. You will be able to determine if you can do this on your own or in case the job is just too big you are able to make a booking for your Rockster in to a local mechanic.
BMW Rockster manual