🏷️ Basic Information

Make:

BMW

Model:

K1100LT

Model Variant:

K1100RS

Model Years Covered:

1992-1999 (estimated, based on typical production runs of K1100 series)

Engine Code Family:

K589

Chassis Code Family:

K589

👋 Introduction

Positioning:

The K1100LT and K1100RS were BMW's flagship touring and sport-touring motorcycles of the early to mid-1990s, known for their smooth inline-four engines, robust engineering, and comfortable ergonomics.

Competitors:

Competed with other large-displacement touring and sport-touring motorcycles from brands like Honda (ST1100), Kawasaki (GTR1000), and Yamaha (Venture Royale).

Engine Platform:

Shares the robust K-series inline-four engine architecture with other contemporary BMW models, offering a blend of power and refinement.

Model Differences:

The LT (Luxus Tourer) emphasizes comfort and touring amenities, featuring extensive fairings, luggage capacity, and a more upright riding position. The RS (Rennsport) offers a sportier profile with a more aggressive riding position and often a more potent suspension setup.

Professional Use:

This manual provides the same level of detail and accuracy that professional BMW technicians rely on for servicing and repairing these motorcycles.

📋 Manual Details

Overall Coverage:

Comprehensive A-Z service and repair for BMW K1100LT and K1100RS models.

Estimated Page Count:

Likely 500-800 pages (typical for detailed factory service manuals).

Type:

Service Repair Workshop Manual

Language:

English (presumed, based on common availability for this model).

Format:

PDF

📖 Manual Coverage

Engine:

Complete engine disassembly, assembly, tuning, troubleshooting, diagnostics, specific components (pistons, cylinders, crankshaft, valves, timing chain), lubrication system.

Fuel System:

Fuel injection system (Bosch Motronic), fuel pump, injectors, throttle body, fuel pressure regulator, fuel tank, lines, filters.

Ignition System:

Ignition coils, spark plugs, ECU control, timing.

Transmission Drivetrain:

Clutch assembly, gearbox (5-speed), final drive, driveshaft, universal joints, maintenance, repair, fluid changes.

Chassis Frame:

Frame inspection, modifications, related components.

Suspension:

Front fork (BMW Telelever variant for RS, standard for LT), rear monoshock absorber, spring rates, damping adjustments, fork seals, bushings, linkage maintenance.

Brakes:

Front and rear disc brakes, caliper overhaul, master cylinders, brake lines, ABS system (if equipped), fluid flushing and bleeding procedures, pad replacement, rotor specifications.

Electrical System:

Wiring diagrams, battery, charging system (alternator, regulator), starter motor, lighting system, horn, fuses, relays, instrument cluster, ECU diagnostics, sensor testing.

Bodywork Fairings:

Fairing removal and installation, body panel repair and replacement, seat removal, storage compartments, wind deflector adjustments (LT model).

Cooling System:

Engine oil cooling system, oil filter, oil change intervals and specifications.

Exhaust System:

Exhaust headers, mufflers, catalytic converter (if applicable), gasket replacement, leak detection.

Maintenance:

Scheduled maintenance, oil changes, filter replacements, brake fluid changes, coolant checks, lubrication points, valve clearance adjustment.

Troubleshooting:

Systematic diagnostic procedures for common and uncommon faults, fault code interpretation (if applicable), symptom-based troubleshooting guides.

Repair Rebuild:

Step-by-step instructions for component disassembly, inspection, repair, and reassembly for all major vehicle systems.

Diagnostics:

Guidance on using diagnostic tools, interpreting sensor data, and performing specific diagnostic tests.

Wiring Diagrams:

Detailed electrical schematics for all systems, allowing for accurate tracing and repair of electrical faults.

Depth:

Full workshop level, suitable for professional mechanics and experienced DIY enthusiasts. Covers everything from basic maintenance to complete engine and transmission rebuilds.

📊 Manual Specifications

Quality:

High-resolution PDF, likely searchable text with clear images and diagrams.

Printability:

Printable pages for easy reference during repairs.

Binding:

N/A (Digital PDF format)

Paper Type:

N/A (Digital PDF format)

⚙️ Engine Specifications

Type:

Liquid-cooled, four-stroke, inline four-cylinder

Displacement:

1093 cc (1093 cubic centimeters)

Bore X Stroke:

72.0 mm x 67.5 mm (approximate)

Compression Ratio:

10.0:1 (typical)

Valve Train:

DOHC, 4 valves per cylinder

Horsepower:

Approximately 100-110 hp (at crank) depending on specific model year and configuration.

Torque:

Approximately 70-75 lb-ft (at crank) depending on specific model year and configuration.

Injection System:

Bosch Motronic electronic fuel injection

Fuel Type:

Unleaded gasoline, premium octane (95 RON / 91 AKI recommended)

Oil Capacity:

Approximately 4.0 - 4.5 liters (with filter change)

Oil Type:

API SG or higher, SAE 20W-50 or 15W-50 (refer to manual for precise recommendations)

🔧 Transmission

Type:

5-speed manual gearbox

Type:

N/A (No automatic option available)

Drive Type:

Shaft drive

Clutch:

Hydraulically operated, multi-plate wet clutch

Gearbox Oil Type:

SAE 75W-90 API GL-4 or GL-5 (refer to manual for precise BMW specification)

Gearbox Oil Capacity:

Approximately 1.2 liters (refer to manual for precise capacity)

📐 Dimensions

Wheelbase:

Approximately 1490 mm (58.7 inches)

Length:

Varies by model (LT typically longer due to fairings and luggage)

Width:

Varies by model (LT typically wider due to fairings)

Height:

Varies by model (LT typically taller)

Dry Weight:

Approximately 230-250 kg (507-551 lbs) depending on model and equipment.

Wet Weight:

Approximately 250-275 kg (551-606 lbs) depending on model and equipment.

Front Tire Size:

120/70 ZR17

Rear Tire Size:

170/60 ZR17 (common)

Front Wheel Size:

3.50 x 17

Rear Wheel Size:

5.00 x 17

Wheel Bolt Pattern:

N/A (BMW typically uses hub-mounted wheels with a single central nut or specific lug pattern).

🛡️ Safety Features

Crash Test Results:

N/A (Motorcycle safety ratings typically differ from automotive; specific crashworthiness information would be in manufacturer-specific test data).

ABS:

Optional BMW Motorrad ABS (Anti-lock Braking System) available on many models.

Braking System:

Dual disc front brakes, single disc rear brake. Powerful stopping power with advanced lever and pedal feel.

Lighting:

Halogen headlight (dual bulbs on some variants), integrated turn signals, taillight, and brake light.

Fairings:

Extensive fairings on LT model provide wind protection and aerodynamic stability.

💡 Technology Features

Instrument Cluster:

Analog tachometer and speedometer, odometer, trip meter, fuel gauge, coolant temperature gauge, warning lights for oil pressure, battery, ABS, etc.

Audio System:

Optional integrated audio systems and radio controls were available on some LT models.

ABS System:

Advanced BMW Motorrad ABS for enhanced braking safety.

Diagnostic Interface:

While not OBD-II in the automotive sense, BMW utilized proprietary diagnostic systems and connectors for advanced troubleshooting.

🔧 Maintenance

Oil Change:

Typically every 10,000 km (6,000 miles) or annually, whichever comes first.

Filter Change:

Oil filter should be changed with every oil change.

Valve Adjustment:

Approximately every 20,000 km (12,000 miles) or as specified in the manual. Requires shims.

Brake Fluid Flush:

Every 2 years, regardless of mileage.

Coolant Check:

Check coolant level regularly; change as per manual recommendations (typically every 3-5 years).

Coolant Type:

Ethylene glycol-based coolant, typically a blue or green color. BMW recommends specific coolant mixtures; refer to manual.

Brake Fluid Type:

DOT 4 brake fluid

Fuel Pump:

Some early models may experience fuel pump wear over time.

Electrical Connections:

Corrosion or degradation of electrical connectors can lead to intermittent faults.

Rear Shock ABSorber:

Original rear shock absorbers may lose damping effectiveness over time, especially with high mileage or heavy loads.

Clutch Slave Cylinder:

Leaks from the clutch slave cylinder can occur with age.

📚 Vehicle History

Bmw Motorrad Legacy:

BMW Motorrad has a long history of producing innovative and high-quality motorcycles, particularly in the touring and sport-touring segments, dating back to the 1920s.

K Series Development:

The K-series, introduced in the early 1980s, marked BMW's move to multi-cylinder engines, starting with the K100. The K1100 series represented an evolution, increasing displacement and refining the platform for enhanced performance and touring capabilities.

Production Period:

The K1100 series was produced roughly from 1992 to 1999, evolving from earlier K100 models and preceding the K1200 series.

Manufacturing Location:

Germany (BMW Motorrad facilities)

🏆 Awards & Recognition

Design Awards:

BMW motorcycles of this era were often praised for their build quality, engineering, and functional design, though specific design awards for these models may not be widely publicized.

Owner Satisfaction:

Generally high owner satisfaction for reliability and touring capability, reflecting BMW's reputation.