Back to Bike FinderYears: 1953 · 1952 · 1951
BMW R25 2
1953Allround

BMW R25 2

Key specifications

Engine
247 cc
Power
12 HP
Fuel type
petrol
Fuel capacity
3.2 L
Transmission
4-speed
Front brakes
Expanding brake (drum brake)
Rear brakes
Expanding brake (drum brake)

Overview

Introducing the 1953 BMW R25/2: A Timeless Classic The 1953 BMW R25/2 stands as a testament to the innovative spirit of post-war motorcycle engineering. Nestled in the allround category, the R25/2 offers a harmonious blend of functionality and classic aesthetics that has made it a beloved choice among motorcycle enthusiasts and collectors alike. With its elegant lines and robust build, this bike captures the essence of 1950s motorcycling, providing a nostalgic ride that harkens back to a simpler time. As one of BMW's early forays into the world of lightweight touring bikes, the R25/2 has carved out a niche in the market for those who crave a unique riding experience that balances both style and performance. At the heart of the R25/2 is a spirited 247cc single-cylinder, four-stroke engine that delivers a modest yet satisfying 11.96 horsepower at 5600 RPM. This powertrain, with its 6.5:1 compression ratio and a bore and stroke of 68mm x 68mm, provides a smooth and reliable ride, allowing the motorcycle to reach a top speed of 80 km/h (49.7 mph). Riders will appreciate the bike’s nimble handling, thanks in part to its lightweight construction of just 140 kg (308.6 pounds) and the efficient shaft drive system. The 4-speed gearbox offers a satisfying shift feel, making it easy to navigate through urban streets or enjoy a leisurely cruise on winding roads. The BMW R25/2 is not just about performance; it also boasts several key features that enhance the riding experience. The bike's classic steel single cradle frame provides strength and stability, while its sophisticated suspension setup—featuring cartridge front forks and twin-shock plunger rear suspension—allows for a comfortable ride on varied terrains. With drum brakes measuring 160mm in diameter at both the front and rear, the R25/2 offers reliable stopping power, though it requires a touch of finesse compared to modern disc brake systems. A kick starter adds a nostalgic charm, inviting riders to engage with the mechanical essence of the motorcycle. **

Pros

  • Classic Aesthetics: Timeless design that appeals to vintage motorcycle enthusiasts.
  • Fuel Efficiency: Exceptional fuel consumption of 2.90 litres/100 km (81.11 mpg) makes it economical for long rides.
  • Reliable Performance: The simple yet effective engine and drivetrain provide dependable performance for everyday use.

Cons

  • Limited Power: With just under 12 horsepower, it may feel underwhelming for those used to modern bikes.
  • Drum Brakes: While effective, they lack the stopping power and responsiveness of contemporary disc brakes.
  • Kick Start Only: The absence of an electric start may deter some riders who prefer modern conveniences.

Technical details

Source specification data

Make
BMW
Model
R25 2
Category
Allround
Starter
Kick
Power
11.96 HP (8.7 kW)) @ 5600 RPM
Clutch
Single plate dry-cable operated
Gearbox
4-speed
Ignition
Battery
Top Speed
80.0 km/h (49.7 mph)
Fuel System
Carburettor. Bing
Bore X Stroke
68.0 x 68.0 mm (2.7 x 2.7 inches)
Compression
6.5:1
Displacement
247.00 ccm (15.07 cubic inches)
Cooling System
Air
Engine Details
Single cylinder, four-stroke
Fuel Consumption
2.90 litres/100 km (34.5 km/l or 81.11 mpg)
Greenhouse Gases
O2
g/km. (
O2
-
Carbon
dioxide emission)
Lubrication System
Wet sump
Transmission Type Final Drive
Shaft drive (cardan)
Fuel Capacity
12.00 litres (3.17 gallons)
Overall Width
790 mm (31.1 inches)
Overall Height
730 mm (28.7 inches)
Overall Length
2,020 mm (79.5 inches)
Ground Clearance
108 mm (4.3 inches)
Weight Incl Oil Gas Etc
140.0 kg (308.6 pounds)
Rear Tyre
2.99-19
Frame Type
Steel-single cradlel
Front Tyre
2.99-19
Rear Brakes
Expanding brake (drum brake)
Front Brakes
Expanding brake (drum brake)
Rear Suspension
Twin shock-Plunger
Front Suspension
Cartridge
Rear Brakes Diameter
160 mm (6.3 inches)
Front Brakes Diameter
160 mm (6.3 inches)