BMW R39 vs Yamaha FZ 25 (2023)
Side-by-side spec comparison, pricing, and a plain-English breakdown of how the BMW R39stacks up against the Yamaha FZ 25. Numbers pulled from manufacturer spec sheets — click either bike for the full review.
Spec comparison
| Spec | BMW R39 | Yamaha FZ 25 |
|---|---|---|
| Model year | 1927 | 2023 |
| Price | — | — |
| Engine | 247 cc | 249 cc |
| Horsepower | 6 hp | 21 hp |
| Torque | — | 20 Nm |
| Seat height | — | 31 mm |
| Fuel capacity | — | 3.7 L |
| Fuel type | petrol | petrol |
| Transmission | 3-speed | 5-speed |
| Front brakes | Expanding brake (drum brake) | Single disc. ABS |
| Rear brakes | — | Single disc. ABS |
| Tires | 3.5-27 / 3.5-27 | 100/80-17 / 140/70-17 |
BMW R39 vs Yamaha FZ 25 — which should you buy?
Picking between the BMW R39 and the Yamaha FZ 25 usually comes down to the numbers you care about most. On paper, the BMW R39 brings 6 hp, while the Yamaha FZ 25 counters with 21 hp.
Our spec tables above highlight the winning number on each line. For the full rider-focused reviews including real-world fuel economy, service costs and available colors, click into either bike:

