BMW R25 1951 - Specifications & Review

Introducing the 1951 BMW R25: A Classic Allrounder

The 1951 BMW R25 stands as a quintessential representation of post-war German engineering, embodying the spirit of versatility in the allround motorcycle category. Designed for both urban commuting and leisurely countryside rides, the R25 was BMW's answer to a growing demand for reliable and efficient personal transportation. With its rugged build and timeless design, this bike appeals not only to enthusiasts of vintage motorcycles but also to those who appreciate a piece of automotive history. The R25 perfectly balances practicality and charm, making it a standout choice in the early 1950s motorcycle market.

Engine Performance and Riding Characteristics

At the heart of the R25 lies a robust 247cc single-cylinder, four-stroke engine, capable of producing a respectable 12 horsepower at 5600 RPM. This power, combined with a 4-speed gearbox and a smooth shaft drive, allows riders to reach a top speed of 80 km/h (49.7 mph) with ease. The bike’s air-cooled engine, with a compression ratio of 6.5:1, ensures a dependable performance while maintaining impressive fuel efficiency—averaging just 3.50 litres per 100 km. Riders will appreciate the R25’s nimble handling and comfortable ride, thanks to its steel single cradle frame and a combination of cartridge front suspension and pushrod rear suspension. Whether navigating city streets or cruising along rural roads, the R25 delivers a riding experience that is both engaging and enjoyable.

Key Features and Technology

The 1951 BMW R25 is equipped with features that reflect the technological advancements of its time. The bike boasts a reliable Bing carburettor and battery ignition system, ensuring a smooth start with the traditional kickstarter. Safety and control are prioritized with its drum brakes—both front and rear—measuring 160 mm in diameter, providing adequate stopping power for its weight class. The R25’s compact dimensions, including a length of 2,073 mm and a weight of 140 kg (308.6 pounds) with fluids, make it manageable for riders of all sizes. With a fuel capacity of 12 litres (3.17 gallons), this motorcycle is ready for extended journeys without frequent stops at the pump.

PROs and CONs

PROs:

1. Fuel Efficiency: With an impressive consumption of 3.50 litres/100 km, the R25 is economical for long rides.
2. Timeless Design: Its classic aesthetics appeal to vintage motorcycle enthusiasts and collectors alike.
3. Reliable Performance: The single-cylinder engine offers dependable power and smooth rides, suitable for various terrains.

CONs:

1. Limited Power: With only 12 HP, the R25 might feel underpowered for those used to modern motorcycles.
2. Kickstart Only: The absence of an electric starter can be a challenge for some riders, especially in colder climates.
3. Basic Technology: While charming, the drum brakes and simple suspension may not meet the expectations of those accustomed to contemporary performance standards.

The 1951 BMW R25, with its blend of classic styling and practical performance, remains a beloved choice for those who appreciate the heritage of motorcycling.