Back to Bike FinderYears: 1930 · 1929 · 1928
BMW R57
1929Allround

BMW R57

Key specifications

Engine
494 cc
Power
18 HP
Fuel type
petrol
Fuel capacity
3.2 L
Front brakes
Expanding brake (drum brake)
Rear brakes
Expanding brake (drum brake)

Overview

Introducing the 1929 BMW R57, a remarkable piece of motorcycle history that embodies the spirit of early 20th-century engineering excellence. Positioned as an all-rounder, the R57 was BMW's entry into a competitive market, delivering a blend of performance, comfort, and reliability that was hard to match. With its distinctive boxer engine and classic styling, this motorcycle appeals not only to collectors but also to those who appreciate the artistry and craftsmanship of vintage machines. The R57’s heritage is interwoven with the narrative of BMW’s pioneering spirit, making it a coveted choice for enthusiasts seeking to own a piece of motorcycling lore. Under the tank of the R57 lies a robust 494cc two-cylinder boxer engine, a configuration that has become synonymous with BMW's design philosophy. Producing 17.95 horsepower at 4000 RPM, this four-stroke powerhouse delivers a top speed of 115 km/h (71.5 mph), allowing riders to cruise comfortably on highways or tackle winding backroads. The engine's air-cooled design and classical 5.8:1 compression ratio ensure reliability, while the 24mm Bing carburetor contributes to efficient fuel delivery. With a commendable fuel consumption of just 4.20 litres per 100 km, riders can enjoy long journeys without the constant worry of refueling, making the R57 not just a beautiful machine, but a practical one too. The R57 is not just about its engine; it features a well-engineered chassis and suspension system that enhances ride quality. The steel double cradle frame provides strength and stability, while the leading link front suspension, combined with a long swingarm and oil pressure shocks at the rear, offers a smooth and controlled ride over various terrains. Coupled with drum brakes—200 mm in diameter both front and rear—the R57 ensures confident stopping power, a critical aspect for any motorcycle of its era. The kick starter adds a touch of nostalgia, allowing riders to engage with their machine in a way that modern push-button starts simply can't replicate. **

Pros

  • Iconic Design: The classic styling and boxer engine configuration make the R57 a standout in any collection.
  • Fuel Efficiency: With a fuel consumption rate of 4.20 litres/100 km, it’s an economical choice for vintage touring.
  • Smooth Ride: The leading link front suspension and long swingarm design provide exceptional ride comfort.

Cons

  • Limited Power: With just under 18 HP, it may struggle to keep up with modern traffic conditions.
  • Kick Start Only: The absence of an electric starter may be a challenge for some riders, especially in cold weather.
  • Maintenance Needs: As a vintage motorcycle, it requires regular and often meticulous maintenance to keep it in prime condition.

Technical details

Source specification data

Make
BMW
Model
R57
Category
Allround
Starter
Kick
Carrying Capacity
360kg-with sidecar 600kg
Power
17.95 HP (13.1 kW)) @ 4000 RPM
Clutch
Dry-single plate-cable operated
Top Speed
115.0 km/h (71.5 mph)
Fuel System
Carburettor. 24mm Bing
Compression
5.8:1
Displacement
494.00 ccm (30.14 cubic inches)
Cooling System
Air
Engine Details
Two cylinder boxer, four-stroke
Fuel Consumption
4.20 litres/100 km (23.8 km/l or 56.00 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
800 mm (31.5 inches)
Overall Height
950 mm (37.4 inches)
Overall Length
2,100 mm (82.7 inches)
Seat
Single seat
Rear Tyre
3.50-26.00
Frame Type
Steel doble cradle
Front Tyre
3.50-26.00
Rear Brakes
Expanding brake (drum brake)
Front Brakes
Expanding brake (drum brake)
Rear Suspension
Long swingarm-oil pressure shocks
Front Suspension
Leading link
Rear Brakes Diameter
200 mm (7.9 inches)
Front Brakes Diameter
200 mm (7.9 inches)