Hello all! Looking into purchasing my first BMW bike. Particularly a 15-18 s1000rr. What are some things I can look for when buying a bike used from a private seller? Im not a new rider, so I know to check the chain, brakes, sprockets, all the normal maintenance things. But am not so knowledgeable on what to look for in the s1000. Please enlighten me. All feedback is welcomed and thanked.