| Parameter | Specification |
|---|---|
| Production Years | 2015 – 2018 |
| Engine Oil | SAE 5W-40, API SL / JASO MA2 (4.0 L) |
| Tire Size (Front/Rear) | 120/70 ZR 17 / 180/55 ZR 17 |
| Tire Pressure (F/R) | 2.5 bar (36.3 psi) / 2.9 bar (42.1 psi) |
| Battery Type | YTX14-BS |
| Spark Plug | NGK LMAR8D-J |
Engineering Heritage: Beyond the Boxer
The BMW R 1200 RS (LC), internal code 0A05, represents a pivotal moment in BMW Motorrad history. While the ‘RS’ (Reisesport) badge originated with the legendary 1976 R 100 RS—the world’s first mass-produced motorcycle with a frame-mounted full fairing—this 2015 iteration broke a long-standing tradition. It abandoned the Telelever front suspension system in favor of 45mm upside-down telescopic forks, a move specifically engineered to provide the front-end feedback and agility required by modern sport-touring enthusiasts.
The Liquid-Cooled Powerhouse
At the heart of the 0A05 is the 1170cc air/liquid-cooled ‘Boxer’ engine. Delivering 125 hp (92 kW) and 125 Nm of torque, this engine utilizes vertical flow cylinder heads. For the RS, BMW optimized the airbox and exhaust system to provide slightly more low-end torque compared to its R 1200 GS sibling, making it an exceptional machine for high-speed continental crossing and spirited mountain passes alike.
Maintenance Guide & Technical Insights
Lubrication System
The LC engine uses a shared oil circuit for the engine and the integrated multi-plate wet clutch. It is critical to use SAE 5W-40 oil that meets JASO MA2 standards to prevent clutch slippage. The total capacity with a filter change is exactly 4.0 liters. We recommend checking the sight glass only when the engine is at operating temperature and has stood for five minutes.
Chassis and Handling
The move to telescopic forks allowed for the placement of the radiator in a central position, improving cooling efficiency and weight distribution. Maintaining correct tire pressure is vital for this geometry: 2.5 bar (36.3 psi) at the front and 2.9 bar (42.1 psi) at the rear ensures the Dynamic ESA (Electronic Suspension Adjustment) functions within its intended parameters.
Electrical and Ignition
The 0A05 utilizes a CAN-bus electrical system. When replacing the battery, ensure a YTX14-BS or equivalent AGM battery is used. For ignition, the NGK LMAR8D-J dual-electrode plugs are specified to ensure efficient combustion across the wide rev range of the liquid-cooled boxer.
Frequently Asked Questions
Q: How often should the valves be checked?
A: BMW recommends a valve clearance check every 20,000 km (12,000 miles). Due to the DOHC design, this is a precision task best suited for technicians with the correct shim kits.
Q: Can I use 10W-40 oil?
A: While 10W-40 is common, BMW specifically mandates 5W-40 for the LC generation to ensure rapid lubrication of the overhead camshafts during cold starts.
Q: What is the final drive maintenance interval?
A: The shaft drive oil should be changed every 20,000 km or 2 years, typically using 180ml of 75W-90 gear oil.