Did you know the BMW K 1200 LT was the first BMW motorcycle to incorporate a reverse gear? Driven by the starter motor via a planetary gearset, this engineering necessity was introduced to help riders manage the machine’s substantial 387 kg (853 lbs) wet weight, setting a new standard for luxury touring ergonomics.
| Component | Specification |
|---|---|
| Production Years | 1999–2009 |
| Engine Type | Liquid-cooled, Inline-4, Longitudinal |
| Engine Oil | SAE 15W-50 (API SF/SG/SH) |
| Oil Capacity | 3.75 Liters |
| Spark Plugs | NGK DCPR7E |
| Battery | Type 51913 |
| Front Tire | 120/70 B17 58V |
| Rear Tire | 160/70 B17 79V (Reinforced C-Spec) |
Technical Overview: The ‘Flying Brick’ Evolution
The K 1200 LT (Luxus-Tourer) represented the ultimate evolution of BMW’s longitudinal inline-four engine architecture. By tilting the engine 90 degrees to the left, BMW achieved a remarkably low center of gravity for such a massive motorcycle. This layout, combined with the Telelever front suspension and Paralever rear drive, provided the stability required for high-speed transcontinental touring.
Maintenance Guide & Fluid Dynamics
To maintain the longevity of the K1200LT powertrain, strict adherence to fluid specifications is mandatory. The engine utilizes 3.75 liters of SAE 15W-50 oil. Given the dry clutch design, riders must ensure they use oil meeting API SF, SG, or SH standards to provide adequate protection for the internal components without the need for friction modifiers found in modern wet-clutch oils.
Tire Requirements & Safety
The K 1200 LT is exceptionally sensitive to tire selection due to its weight. The rear tire must be a 160/70 B17 79V (C-spec). The ‘C-spec’ designation indicates a reinforced carcass specifically designed to handle the high load index of a fully-loaded luxury tourer. Operating on standard tires can lead to premature wear and compromised handling. Pressure should be strictly maintained at 2.5 bar (Front) and 2.9 bar (Rear).
Electrical System & Ignition
The electrical demands of the LT—including the optional hydraulic center stand and integrated audio systems—require a robust 51913 battery. Ignition is handled by NGK DCPR7E spark plugs, which should be inspected every 20,000 km to ensure optimal combustion efficiency and fuel economy in the 1171cc power plant.
MotoSpecsLab Verdict
The BMW K 1200 LT remains a masterclass in mechanical integration. While its complexity requires diligent maintenance, the payoff is a touring experience characterized by unparalleled wind protection and smooth power delivery. For the modern collector or long-distance rider, focusing on the specific ‘C-spec’ tire requirements and high-viscosity oil standards is the key to unlocking the legendary reliability of the K-series platform.