| Specification | Data |
|---|---|
| Production Years | 1997 – 2005 |
| Engine Type | Longitudinal Inline-4 (Flying Brick) |
| Oil Capacity & Grade | 3.8 L (SAE 15W-50 or 20W-50) |
| Tire Size (Front) | 120/70 ZR 17 |
| Tire Size (Rear) | 170/60 ZR 17 |
| Tire Pressure (F/R) | 2.2 bar (32 psi) / 2.5 bar (36 psi) |
| Battery Type | 519 13 |
| Spark Plugs | NGK DCPR7E / Bosch YR6LDE |
The BMW K 1200 RS represents a pivotal moment in Bavarian engineering history: it was the first BMW motorcycle to officially shatter the manufacturer’s self-imposed 100-horsepower limit, delivering a robust 130 hp. As the final evolution of the longitudinal “Flying Brick” inline-four architecture, the K 1200 RS combined a low center of gravity with a Telelever front end, creating a high-speed sport-tourer that remains legendary for its stability and mechanical longevity.
Technical Performance & Engineering
At the heart of the 547 series is the 1171cc liquid-cooled engine. Unlike modern transverse layouts, the longitudinal orientation allowed for a unique vibration profile and ease of access to certain components. The frame utilized the engine as a stressed member, coupled with the Paralever rear suspension to mitigate shaft-drive torque reaction. From a performance standpoint, the bike was designed for the Autobahn, offering exceptional wind protection and a chassis that settles into a rock-solid groove at triple-digit speeds.
Maintenance Guide: Keeping the Legend Alive
1. Lubrication System
The K 1200 RS is sensitive to oil quality due to its high-tolerance internal components. We recommend using a high-quality SAE 15W-50 or 20W-50 mineral or semi-synthetic oil. The total capacity is 3.8 liters. Ensure the oil level is checked via the sight glass when the bike is on the center stand after a brief warm-up and cool-down period.
2. Tires and Handling
To maintain the precision of the Telelever system, tire health is paramount. The standard fitment is 120/70 ZR 17 at the front and 170/60 ZR 17 at the rear. For optimal handling and tire wear, maintain pressures at 2.2 bar (32 psi) front and 2.5 bar (36 psi) rear. Note that when carrying a passenger or full luggage, the rear pressure should be increased to 2.9 bar (42 psi).
3. Electrical and Ignition
The 547 series utilizes a robust electrical system, but the 519 13 battery must be kept at peak charge to avoid ABS initialization errors—a common quirk of this era. For ignition, the NGK DCPR7E or Bosch YR6LDE plugs are the factory-specified components, ensuring a clean burn and consistent cold-start performance.
MotoSpecsLab Verdict
The BMW K 1200 RS is a masterclass in over-engineering. While it lacks the lightweight flickability of modern superbikes, its build quality and high-speed composure are nearly unmatched. For the enthusiast who values mechanical heritage and trans-continental comfort, the K 1200 RS remains a premier choice in the second-hand market.
Frequently Asked Questions (FAQ)
Q: How often should I change the oil?
A: We recommend a change every 6,000 miles (10,000 km) or annually, whichever comes first.
Q: Can I use 10W-40 oil?
A: While possible in very cold climates, the 15W-50 or 20W-50 weight is preferred for the operating temperatures of the Flying Brick engine to ensure proper film strength.
Q: Why is my ABS light flashing?
A: This is often caused by low voltage during startup. Ensure your 519 13 battery is fully charged and the terminals are clean.