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

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

### Introducing the 1956 BMW R25/3: A Classic Allrounder In the mid-1950s, BMW solidified its reputation as a maker of reliable and innovative motorcycles, and the 1956 R25/3 stands as a testament to this legacy. Positioned as an allround motorcycle, the R25/3 captured the hearts of enthusiasts seeking a blend of performance, comfort, and versatility. With its iconic design and robust engineering, this bike is not just a mode of transport; it's a piece of history that showcases an era where simplicity and functionality seamlessly intertwined. Whether you’re cruising through the countryside or navigating city streets, the R25/3 promises a riding experience steeped in character and charm. At the heart of the R25/3 is a spirited 247cc single-cylinder, four-stroke engine. Producing 13.05 horsepower at 5,800 RPM, this powerplant may not inspire adrenaline-fueled speeds, but it delivers a thrilling ride up to 54.7 mph (88 km/h). The bike's impressive fuel efficiency of 2.90 litres per 100 km (81.11 mpg) makes it an ideal companion for long journeys or daily commutes. With a compression ratio of 7.1:1 and a balanced bore and stroke of 68mm, the engine provides a smooth, predictable power delivery. Complemented by a 4-speed gearbox and a shaft drive, the R25/3 ensures that each ride is not only enjoyable but also economical, allowing riders to explore with peace of mind. The R25/3 is equipped with a closed steel loop-welded frame, providing a sturdy foundation for its chassis. The bike features a combination of cartridge front suspension and telescopic rear suspension, which together contribute to a comfortable ride over varying terrains. Stopping power is provided by expanding drum brakes at both the front and rear, each with a diameter of 160mm. Notably, the seat height of 730mm ensures that riders of varying sizes can confidently plant their feet on the ground, helping to enhance overall comfort and control. The classic kickstarter adds a nostalgic touch, giving riders a tactile connection to the machine. With a fuel capacity of 12 litres, the R25/3 is ready for the open road, beckoning adventure. ###

Pros

    Cons

    • Exceptional Fuel Efficiency: With a consumption rate of 2.90 litres per 100 km, this motorcycle is economical for long-distance travel.
    • Classic Aesthetic Appeal: The vintage styling and signature BMW design elements make it a head-turner at any gathering or during a ride.
    • Comfortable Riding Position: A reasonable seat height and well-balanced suspension offer a comfortable ride for various riders, enhancing overall handling.
    • Limited Power Output: The 13.05 HP engine may feel underpowered compared to modern motorcycles, especially for those seeking high-speed thrills.
    • Drum Brakes: While sufficient for its time, the drum brake system may not provide the same stopping power or responsiveness as modern disc brakes.
    • Kickstarter Only: The absence of an electric start can be a drawback for those accustomed to modern conveniences, requiring more effort to get going.

    Technical details

    Source specification data

    Make
    BMW
    Model
    R25 3
    Category
    Allround
    Starter
    Kick
    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)
    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)