| Specification | Value |
|---|---|
| Production Years | 2015 – 2020 |
| Engine Oil | SAE 5W-40, API SJ / JASO MA2 (3.1 L) |
| Tire Size (Front/Rear) | 120/70 R 15 / 160/60 R 15 |
| Battery Type | YTZ14S |
| Spark Plug | NGK LMAR8D-J |
A unique engineering highlight of the BMW C 650 Sport (0C04) is its sophisticated powertrain architecture: the 647cc parallel-twin engine features a 270-degree crankshaft offset and two balancer shafts. This configuration was specifically engineered to provide the acoustic profile and smooth power delivery of a 90-degree V-twin, effectively bridging the gap between scooter convenience and motorcycle soul.
Technical Performance & Engineering
The 0C04 generation, introduced as the successor to the C 600 Sport, brought significant refinements to the CVT (Continuously Variable Transmission). BMW engineers revised the transmission ratios and clutch linings to provide more immediate take-off and a more linear acceleration curve. With 60 horsepower on tap, the C 650 Sport remains one of the most powerful entries in the maxi-scooter segment, capable of highway speeds with significant reserves for overtaking.
Maintenance Essentials
To maintain the high-performance nature of the 0C04, strict adherence to fluid specifications is mandatory. The engine utilizes 3.1 liters of SAE 5W-40 (API SJ / JASO MA2). Using oils without the JASO MA2 rating can lead to premature wear of the internal components shared with the transmission system.
The ignition system relies on NGK LMAR8D-J spark plugs. Given the high-revving nature of the parallel-twin, these should be inspected according to the 20,000 km service intervals. For electrical reliability, the YTZ14S battery is the standard fitment; however, owners should ensure the charging system is healthy, as the C 650 Sport features significant electronic draw from its optional heated grips and seats.
Chassis, Tires, and Safety
Handling precision is a hallmark of this model, supported by a hybrid chassis consisting of a tubular steel frame and a die-cast aluminum swingarm bearing. Tire selection is critical for maintaining this agility. The factory recommends 120/70 R 15 for the front and 160/60 R 15 for the rear.
Recommended Tire Pressures:
- Front: 2.3 bar (33.4 psi)
- Rear (Solo): 2.5 bar (36.3 psi)
- Rear (With Passenger/Load): 2.9 bar (42.1 psi)
Editorial Verdict
The BMW C 650 Sport (0C04) is a masterclass in urban engineering. While maintenance can be more complex than entry-level scooters due to the integrated fairings and sophisticated CVT, the reward is a machine that handles with the poise of a sport-touring motorcycle. It remains a top-tier choice for the enthusiast who refuses to compromise on performance for the sake of utility.