| Specification | Value |
|---|---|
| Production Years | 2005 – 2007 |
| Engine Type | Air/Oil-cooled Boxer Twin (Hexhead) |
| Engine Oil | SAE 15W-50 (3.75 L) |
| Tire Size (Front) | 120/70 ZR 17 |
| Tire Size (Rear) | 180/55 ZR 17 |
| Tire Pressure (F/R) | 2.2 bar / 2.5 bar (32/36 psi) |
| Battery | YTX14-BS |
| Spark Plug | NGK DCPR8EKC |
While the BMW R 1200 ST (internal code 0328) is often remembered for its polarizing vertically stacked hexagonal headlights, its true engineering triumph was its weight reduction strategy. Upon its debut in 2005, it was nearly 20kg (44 lbs) lighter than the R 1150 RS it replaced, making it one of the most agile and power-to-weight efficient boxer-powered sport-tourers in BMW’s historical lineup.
Technical Engineering Overview
The R 1200 ST is powered by the first generation of the ‘Hexhead’ boxer engine. This 1170cc unit introduced a balance shaft to eliminate the traditional rocking vibration inherent in flat-twins, resulting in a significantly smoother power delivery across the rev range. Producing roughly 110 horsepower, the 0328 model utilized the Telelever front suspension and Evo-Paralever rear drive, providing a stable platform that resists brake dive—a critical feature for high-speed sport touring.
The chassis geometry was tuned more aggressively than its sibling, the R 1200 RT, offering a sharper rake and shorter wheelbase. This makes the ST a ‘rider’s bike,’ rewarding technical input on winding roads while maintaining the long-distance ergonomics BMW is known for, including adjustable clip-on handlebars and seat height.
Maintenance & Service Guide
To maintain the high-performance standards of the Hexhead engine, MotoSpecsLab recommends strict adherence to the following service intervals and specifications:
1. Lubrication System
The R 1200 ST requires 3.75 liters of SAE 15W-50 oil. Given the air/oil-cooled nature of the engine, using a high-quality semi-synthetic or synthetic oil is vital to manage thermal loads during slow-moving traffic or high-speed touring.
2. Tires & Handling
For optimal handling and tire longevity, maintain the 120/70 ZR 17 front and 180/55 ZR 17 rear tires at 2.2 bar (32 psi) and 2.5 bar (36 psi) respectively. If riding with a pillion and full luggage, the rear pressure should be increased to 2.9 bar (42 psi).
3. Ignition & Electrical
The 0328 model utilizes a dual-spark ignition system. The primary spark plugs are NGK DCPR8EKC. These should be inspected every 10,000 km to ensure clean combustion and prevent surging at low RPMs. The electrical system is supported by a YTX14-BS battery; ensure terminal connections are clean, as the CAN-bus system is sensitive to voltage fluctuations.
Expert Verdict
The BMW R 1200 ST remains a connoisseur’s choice. It offers a mechanical purity and lightness that modern, tech-heavy tourers often lack. For the owner who prioritizes mechanical feedback and unique aesthetics, the ST is a rewarding machine that, when maintained correctly, offers bulletproof reliability.
FAQ
Q: How often should the valve clearances be checked?
A: MotoSpecsLab recommends checking valve clearances every 10,000 km (6,000 miles) as part of the standard BMW service schedule.
Q: Can I use 10W-40 oil?
A: While possible in very cold climates, SAE 15W-50 is the factory-recommended grade for the R 1200 ST to ensure proper protection across all operating temperatures.