BMW R2 Series 4
1935Allround

BMW R2 Series 4

Key specifications

Engine
198 cc
Power
8 HP
Fuel type
petrol
Fuel capacity
2.9 L
Transmission
3-speed
Front brakes
Expanding brake (drum brake)
Rear brakes
Expanding brake (drum brake)

Overview

The 1935 BMW R2 Series 4 stands as a poignant symbol of pre-war motorcycle engineering, embodying the spirit of versatility and reliability that defined BMW's foray into the allround category. With its sleek design and robust construction, the R2 Series 4 was strategically positioned to cater to the demands of both urban commuters and adventurous riders. This motorcycle not only represented the ingenuity of its time but also served as a precursor to BMW's illustrious legacy in the motorcycle industry, making it a sought-after classic for collectors and enthusiasts alike. At the heart of the R2 Series 4 is a spirited single-cylinder, four-stroke engine boasting a displacement of 198 cc, delivering a modest yet satisfying power output of 8.02 HP at 4500 RPM. This engine, paired with a 3-speed gearbox and a unique shaft drive, ensures smooth acceleration, making it capable of achieving a top speed of 95 km/h (59 mph). Riders will appreciate the R2's impressive fuel efficiency, consuming a mere 2.75 liters per 100 km, which translates to an astonishing 85.53 mpg. The air-cooled engine effortlessly handles the rigors of daily riding, providing a dependable performance that remains resonant in the hearts of those who have taken it for a spin. The R2 Series 4 boasts a pressed steel duplex frame, which not only enhances stability but also contributes to its lightweight design, tipping the scales at just 130 kg (286.6 lbs). Its cartridge front suspension allows for a smoother ride, while the rigid rear suspension provides a solid connection to the road. Safety is paramount, and the expanding drum brakes at both the front and rear, each measuring 180 mm, offer reliable stopping power. The bike's classic aesthetics are complemented by its kickstarter, evoking a sense of nostalgia while engaging the rider in the traditional art of motorcycle operation. In summary, the 1935 BMW R2 Series 4 is a remarkable blend of charm and functionality, capturing the essence of early 20th-century motorcycling. Its thoughtful engineering and classic characteristics offer a unique riding experience that continues to attract enthusiasts, proving that sometimes, it’s the simpler machines that leave a lasting impression.

Pros

  • Excellent Fuel Efficiency: With an impressive 85.53 mpg, the R2 Series 4 is remarkably economical for its time, making it an ideal choice for long rides.
  • Robust Build Quality: The pressed steel duplex frame provides durability and stability, ensuring a reliable ride across various terrains.
  • Classic Aesthetics: The R2’s vintage design and engineering make it a timeless piece attractive to collectors and enthusiasts alike.

Cons

  • Limited Power Output: The modest 8.02 HP may not satisfy riders seeking high-performance thrills compared to modern motorcycles.
  • Basic Suspension Setup: The rigid rear suspension may not provide the level of comfort expected by today’s riders during longer journeys.
  • Kick Start Only: The absence of an electric starter can be a drawback for those accustomed to modern conveniences, requiring a bit of effort to get the bike up and running.

Technical details

Source specification data

Make
BMW
Model
R2 Series 4
Category
Allround
Starter
Kick
Power
8.02 HP (5.9 kW)) @ 4500 RPM
Clutch
Dry-single plate-cable operated
Gearbox
3-speed
Top Speed
95.0 km/h (59.0 mph)
Fuel System
Carburettor. Amal 18mm
Bore X Stroke
63.0 x 64.0 mm (2.5 x 2.5 inches)
Compression
6.7:1
Displacement
198.00 ccm (12.08 cubic inches)
Cooling System
Air
Engine Details
Single cylinder, four-stroke
Fuel Consumption
2.75 litres/100 km (36.4 km/l or 85.53 mpg)
Greenhouse Gases
O2
g/km. (
O2
-
Carbon
dioxide emission)
Lubrication System
Wet sump
Transmission Type Final Drive
Shaft drive (cardan)
Fuel Capacity
11.00 litres (2.91 gallons)
Overall Width
850 mm (33.5 inches)
Overall Height
950 mm (37.4 inches)
Overall Length
1,950 mm (76.8 inches)
Weight Incl Oil Gas Etc
130.0 kg (286.6 pounds)
Rear Tyre
2.99-25.00
Frame Type
Pressed steel duplex
Front Tyre
2.99-25.00
Rear Brakes
Expanding brake (drum brake)
Front Brakes
Expanding brake (drum brake)
Rear Suspension
Rigid
Front Suspension
Cartridge
Rear Brakes Diameter
180 mm (7.1 inches)
Front Brakes Diameter
180 mm (7.1 inches)