Back to Bike FinderYears: 1956 · 1955 · 1954 · 1953
BMW R25 3
1954Allround

BMW R25 3

Key specifications

Engine
247 cc
Power
13 HP
Fuel type
petrol
Fuel capacity
3.2 L
Transmission
4-speed
Seat height
29 mm
Front brakes
Expanding brake (drum brake)
Rear brakes
Expanding brake (drum brake)

Overview

### 1954 BMW R25/3: The Allround Classic The 1954 BMW R25/3 stands as a testament to the artistry of motorcycle engineering from the golden age of motoring. Positioned as an allrounder within the BMW lineup, this model strikes an exquisite balance between practicality and performance, making it a beloved choice for both novice riders and seasoned enthusiasts alike. With its sleek lines and timeless design, the R25/3 captures the essence of post-war Germany, embodying a spirit of freedom and adventure that continues to resonate with riders today. At the heart of the R25/3 lies a robust 247cc single-cylinder, four-stroke engine that produces a respectable 13.05 horsepower at 5800 RPM. This engine is paired with a smooth 4-speed gearbox, allowing riders to easily navigate through urban environments or open roads. The bike’s impressive top speed of 88 km/h (54.7 mph) ensures exhilarating rides, whether you’re commuting or enjoying a leisurely weekend trip. With a compression ratio of 7.1:1 and a fuel consumption of just 2.90 litres per 100 km (81.11 mpg), the R25/3 not only delivers spirited performance but also offers remarkable fuel efficiency, making it a sensible choice for long-distance touring. The R25/3 is adorned with key features that enhance its riding experience and overall practicality. Its closed steel loop-welded frame provides durability without sacrificing agility, while the telescopic rear suspension and cartridge front suspension ensure a comfortable ride over varying terrains. The drum brakes, with a diameter of 160 mm at both the front and rear, offer reliable stopping power, instilling confidence in riders as they navigate curves and city streets alike. With a seat height of 730 mm (28.7 inches), this motorcycle is accessible to a wide range of riders, while the classic kick starter harkens back to a simpler time, inviting a sense of nostalgia with every ride. ###

Pros

    Cons

    • Exceptional Fuel Efficiency: With a consumption rate of just 2.90 litres per 100 km, the R25/3 is perfect for long journeys without frequent refueling stops.
    • Timeless Design: The classic aesthetics and craftsmanship are sure to turn heads and spark conversations among motorcycle enthusiasts.
    • Accessible Riding Experience: Its manageable weight and seat height make it suitable for riders of various skill levels, enhancing its appeal as a versatile allrounder.
    • Limited Power Output: While suitable for daily riding, the 13.05 HP may feel underwhelming for those seeking high-performance thrills.
    • Drum Brakes: The drum braking system, although reliable, may not provide the same level of stopping power or responsiveness as modern disc brakes.
    • Kick Start Only: The absence of an electric starter may deter some riders who prefer the convenience of modern starting systems, especially in challenging conditions.

    Technical details

    Source specification data

    Make
    BMW
    Model
    R25 3
    Category
    Allround
    Starter
    Kick
    Carrying Capacity
    320kg
    Power
    13.05 HP (9.5 kW)) @ 5800 RPM
    Clutch
    Single plate dry-cable operated
    Gearbox
    4-speed
    Ignition
    Battery
    Top Speed
    88.0 km/h (54.7 mph)
    Fuel System
    Carburettor. Bing
    Bore X Stroke
    68.0 x 68.0 mm (2.7 x 2.7 inches)
    Compression
    7.1:1
    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)
    Seat Height
    730 mm (28.7 inches) If adjustable, lowest setting.
    Fuel Capacity
    12.00 litres (3.17 gallons)
    Overall Width
    760 mm (29.9 inches)
    Overall Height
    710 mm (28.0 inches)
    Overall Length
    2,065 mm (81.3 inches)
    Ground Clearance
    92 mm (3.6 inches)
    Weight Incl Oil Gas Etc
    150.0 kg (330.7 pounds)
    Seat
    Spring-mounted seat
    Rear Tyre
    3.27-18
    Frame Type
    Closed steel loop-welded
    Front Tyre
    3.27-18
    Rear Brakes
    Expanding brake (drum brake)
    Front Brakes
    Expanding brake (drum brake)
    Rear Suspension
    Telscopic
    Front Suspension
    Cartridge
    Rear Brakes Diameter
    160 mm (6.3 inches)
    Front Brakes Diameter
    160 mm (6.3 inches)