Segment:
Sport Touring Motorcycle
Target Audience:
BMW R1100 S owners, independent motorcycle mechanics, and enthusiasts seeking in-depth technical information.
Competitors:
Honda VFR series, Yamaha FJR1300, Kawasaki GTR1400, Ducati ST series.
Model Attributes:
Torquey boxer-twin engine, shaft drive, optional ABS, capable handling for sport touring.
Engine Service:
Complete engine overhaul, valve adjustments, timing chain inspection, piston and cylinder service, oil pump servicing.
Fuel System:
Fuel injection system diagnostics, fuel pump replacement, injector cleaning and testing, throttle body service.
Transmission And Drivetrain:
Gearbox inspection, clutch service, final drive inspection and maintenance, spline lubrication.
Brakes:
ABS system troubleshooting, brake pad replacement, brake fluid bleeding, caliper service, master cylinder overhaul.
Electrical System:
Wiring diagrams, battery maintenance, alternator and starter motor testing, ignition system diagnosis, lighting system service, ECU diagnostics.
Suspension And Steering:
Front fork servicing (oil change, seal replacement), rear shock absorber adjustment and replacement, steering head bearing maintenance, wheel bearing inspection.
Chassis And Body:
Frame inspection, fairing removal and installation, seat servicing, luggage system fitment.
Routine Maintenance:
Oil and filter changes, spark plug replacement, air filter cleaning/replacement, chain adjustment (if applicable to drivetrain), general inspection checklists.
Troubleshooting:
Diagnostic flowcharts for common running issues, electrical faults, and component failures.
Repair And Rebuild:
Step-by-step instructions for component removal, disassembly, inspection, repair, and reassembly.
Depth Level:
Comprehensive (from basic rider maintenance to advanced mechanical and electrical diagnostics).
Engine Type:
Air/oil-cooled, four-stroke boxer-twin
Bore X Stroke:
99 mm x 70.5 mm
Compression Ratio:
10.7:1
Horsepower:
90 hp @ 7,250 rpm (approx.)
Torque:
9.9 kgm @ 5,500 rpm (approx.)
Fuel Delivery:
Electronic Fuel Injection (Bosch Motronic 2.2 or similar)
Fuel Type:
Unleaded gasoline, minimum 95 octane
Ignition System:
Digital electronic ignition with knock control
Oil Type:
API SG or higher, SAE 20W-40 or 20W-50 motorcycle-specific engine oil
Oil Capacity:
Approx. 4.0 liters (including filter)
Transmission Type:
5-speed manual gearbox
Clutch Type:
Single dry plate clutch, hydraulically actuated
Gear Ratios:
Specific ratios detailed in manual
Final Drive Ratio:
Specific ratio detailed in manual
Gearbox Oil Type:
BMW Gear oil (e.g., SAE 75W-90 GL-5) or equivalent
Gearbox Oil Capacity:
Approx. 1.5 liters
Final Drive Oil Type:
BMW Gear oil (e.g., SAE 75W-90 GL-5) or equivalent
Final Drive Oil Capacity:
Approx. 0.25 liters
Major Service Interval:
Every 10,000 - 12,000 miles or annually. Specifics in manual.
Valve Adjustment Interval:
Every 10,000 - 12,000 miles. (Often part of major service)
Oil Filter Change Interval:
Every 5,000 - 6,000 miles or annually.
Brake Fluid:
DOT 4, low viscosity
Coolant:
Air-cooled engine, oil cooler fluid is engine oil.
Common Complaints:
Hall sensor failures, regulator/rectifier issues, fuel pump wear, splines on driveshaft/final drive can wear if not properly lubricated.
Maintenance Focus:
Regular spline lubrication, checking electrical connections, and monitoring the charging system are crucial.
Oil Filter Oem Equivalent:
Mann-Filter MH 6, Mahle OC 94/2, K&N KN-160 (verify specific part number for model year)
Air Filter Oem Equivalent:
K&N BM-1195, Pipercross PX1797 (verify specific part number for model year)
Industry Standing:
Praised for its comfortable ride, powerful engine, and robust engineering, a solid competitor in the sport-touring segment of its era.
Reliability Perception:
Generally considered reliable with proper maintenance, known for enduring boxer-twin platform.
