This manual covers the BMW K1100RT, R1100RS, R850GS, R1100GS, R850R, and R1100R models, produced between the early 1990s and early 2000s. These motorcycles represent BMW's commitment to engineering excellence, offering a blend of performance, comfort, and reliability for sport-touring and adventure riding. Known for their robust inline-four (K-series) and boxer twin (R-series) engines, advanced suspension systems like the Telelever, and sophisticated Bosch Motronic fuel injection, these models were designed for discerning riders. The K1100RT provided exceptional touring comfort, while the R-series variants offered versatility across different riding styles, from sport-touring to off-road capability.

This workshop service manual provides comprehensive guidance for the maintenance, diagnosis, and repair of the specified BMW motorcycles. It details procedures for engine overhaul, transmission service, chassis and suspension work, and electrical system troubleshooting. The manual includes essential information such as routine maintenance schedules, fluid specifications, torque values, and detailed wiring diagrams. Its purpose is to equip owners, technicians, and mechanics with the in-depth knowledge required to keep these complex machines in optimal condition, ensuring their longevity and performance through accurate and efficient service.