Segment:
Adventure Touring Motorcycle
Reputation:
Renowned for its versatility, durability, and capability for long-distance travel and off-road excursions.
Competitors Circa 1998:
Honda Africa Twin, Yamaha Super Tenere, Triumph Tiger, Suzuki V-Strom (later models).
Engine Configuration:
Boxer-twin, air/oil-cooled
Suspension:
BMW's signature Telelever front suspension for improved handling and comfort.
Engine:
Detailed overhaul, component testing, tuning, fuel injection system (BMS-K/D), ignition system, exhaust system.
Transmission:
Clutch, gearbox operation, maintenance, repair, final drive, driveshaft, lubrication.
Chassis:
Frame, suspension (Telelever front, Paralever rear), steering, wheels, tires.
Electrical System:
Wiring diagrams, lighting, battery, alternator, starter, ABS II, instrument cluster, electronic control units (ECUs).
Brakes:
Hydraulic system, ABS II operation and maintenance, brake pad replacement, rotor inspection, bleeding procedures.
Fuel System:
Fuel pump, injectors, pressure regulator, fuel filter replacement, tank maintenance.
Routine Maintenance:
Oil changes, filter replacements, spark plug service, valve clearance checks, lubrication points.
Troubleshooting:
Diagnostic procedures for common and uncommon faults, error code interpretation (where applicable).
Repair Procedures:
Step-by-step instructions for engine disassembly/reassembly, transmission overhaul, suspension component replacement, electrical component repair.
Diagnostic Procedures:
Fault finding using visual inspection, measurement tools, and potentially diagnostic equipment (if covered).
Depth:
Professional technician level, suitable for complete engine rebuilds, advanced electrical diagnostics, and complex component replacements.
Type:
Four-stroke Boxer-twin
Bore X Stroke:
98 mm x 74.5 mm
Cooling System:
Air/oil-cooled
Valve Train:
2 valves per cylinder, Overhead Camshaft (OHC), actuated by pushrods and rockers.
Horsepower:
Approx. 95 hp @ 7250 rpm
Torque:
Approx. 98 Nm (72 lb-ft) @ 5500 rpm
Fuel Delivery:
Electronic Fuel Injection (EFI), Bosch Motronic BMS-K/D
Fuel Type:
Unleaded gasoline, minimum 91 RON
Oil Type:
SAE 20W-40 or SAE 15W-50 motorcycle-specific oil
Oil Capacity:
Approx. 4.0 liters (with filter change)
Type:
6-speed manual gearbox
Clutch:
Single dry plate, diaphragm spring
Final Drive:
Shaft drive to rear wheel
Gear Ratios:
Refer to manual for specific ratios (typical for adventure bikes).
Transmission Oil:
SAE 75W-90 GL-5 gear oil
Transmission Oil Capacity:
Approx. 0.25 liters (gearbox), refer to manual for final drive oil.
Length:
Approx. 2230 mm (87.8 in)
Width:
Approx. 915 mm (36.0 in) (at handlebars)
Height:
Approx. 1435 mm (56.5 in) (at seat)
Wheelbase:
Approx. 1487 mm (58.5 in)
Dry Weight:
Approx. 230 kg (507 lbs)
Gross Vehicle Weight Rating:
Refer to manual for specific GVWR.
Fuel Tank Capacity:
25 liters (6.6 US gal) including a 4-liter reserve.
Safety Features Rating:
N/A for motorcycles in the same manner as cars.
ABS:
Optional BMW Motorrad Integral ABS II (anti-lock braking system).
Brakes Front:
Dual 305mm discs with 4-piston calipers.
Brakes Rear:
Single 276mm disc with 2-piston caliper.
Lighting:
Halogen headlight, LED taillight, turn signals.
Chassis Design:
Sturdy frame and suspension designed for stability and control.
Infotainment System:
N/A (Basic instrumentation, focus on function over entertainment).
ABS System:
Integral ABS II (optional) - advanced for its time, integrating front and rear brake actuation.
Diagnostic Ports:
Diagnostic connector for electronic troubleshooting (e.g., with BMW diagnostic tools).
Instrument Cluster:
Analog speedometer and tachometer, LCD display for fuel level, odometer, clock, gear indicator (if equipped), warning lights.
Oil Change Interval:
Typically every 10,000 km or annually, whichever comes first.
Valve Clearance Check:
Typically every 20,000 km.
Spark Plug Replacement:
Refer to manual, often around 20,000-40,000 km depending on plug type.
Engine Oil Spec:
SAE 20W-40 or SAE 15W-50 Motorcycle-specific.
Brake Fluid Spec:
DOT 4 (High-temperature racing fluid recommended for best performance).
Transmission Oil Spec:
SAE 75W-90 GL-5 Gear Oil.
Common Wear Items:
Clutch wear, driveshaft splines lubrication, Telelever dust seals, alternator rotor failure (in some years).
Electrical Gremlins:
Can be prone to minor electrical faults if not properly maintained or modified; manual aids diagnosis.
Maintenance Schedule Availability
Schedule Detail:
Manual provides detailed, mileage-based, and time-based service schedules.
Manufacturer:
Bayerische Motoren Werke AG (BMW)
Motorcycle Division History:
BMW has a long and distinguished history in motorcycle manufacturing, dating back to the 1920s, with a strong focus on engineering and innovation.
R Series Legacy:
The R 1150 GS is part of the highly successful 'GS' (Gelände/Straße - Off-road/Street) line, which began with the R80G/S in 1980, setting the standard for adventure touring motorcycles.
Successor:
R 1200 GS (introduced in 2004)
Production Years:
The R 1150 GS model range was produced from 1999 to 2005. The 1998 model designation might refer to the model year of introduction or early production. (Note: 1998 may be an early model year designation, with primary production starting in 1999).
Motorcycle Awards:
While specific awards for the 1998 model year are not readily available, the R 1150 GS series received numerous accolades and critical acclaim for its pioneering role in the adventure touring segment and its robust capabilities.
Reliability Ratings:
Generally considered reliable, especially with proper maintenance as outlined in the service manual. Known for robust engineering.
Emissions Compliance:
Meets relevant emissions standards for its production year, specific details would be in the manual or vehicle compliance plates.
