If you have to execute fixes on your TGB R125X then it is always recommended to possess a Workshop Manual to keep just for reference in case that you want to know techniques to strip off a specific part including Wheel and fit it again safely.
TGB R125X Workshop Manuals will provide you with particular diagnostic information for your automobile so if something is faulty it helps you identify what the problem is and how you can correct it. You will be able to determine if you can do this yourself or in case the job is just too big you can actually make a reservation for your R125X in with a decent mechanic.
TGB R125X manual