BMW R 57
The BMW R 57 continued the sporting 500cc line after the R 47. BMW's own account describes an evolutionary model, with a larger carburettor and front brake among its changes. Its scarcity is historical production scarcity, without an anniversary badge or an announced numbered allocation.
Model at a glance
| Historical model tally | 1,006 reported for the original model |
|---|---|
| Count basis | Historical model tally; detailed scope is given in Production history. |
| Production period | 1928–1930 |
| Engine / propulsion | BMW 494 cc flat-twin engine petrol engine |
| Classification | Historical low-production model; not an announced numbered edition |
| Origin | Germany |
Is the 1,800 figure all R 57 production?
No. BMW’s booklet groups the R 57 and R 63 together at 1,800. The individual R 57 tally used here is 1,006.
Related motorcycles
- BMW R 47
- BMW R 63
Sources
- BMW Group Classic — individual model history and specification
- BMW AG — BMW Motorräder seit 1923, historical production table, printed pages 69–71 (PDF pages 35–36; hosted scan)
- BMW Einzylinder — individual-model historical tally reference; selected rows checked against manufacturer grouped figures
- Wikimedia Commons — exact photo, author and file-specific reuse terms
Why this machine matters
The R 57 rewards close comparison rather than a dramatic reinvention narrative. Its role in a collection is to show how a specialist sporting model developed through detail changes. The reported individual tally is checked against BMW's combined R 57/R 63 production entry, with the two models kept separate.
The story
The manufacturer's catalogue retains the 494cc flat-twin format and an 18hp rating. This continuity matters when interpreting the new designation: a higher model number did not automatically mean an entirely new engine concept. The selected side photograph of a 1929 R 57 makes the engine, frame and final-drive arrangement visible together. It is an exact-model reference, not evidence that every item on a different survivor matches factory delivery.
Built in limited numbers
1,006 is the reported individual-model tally. BMW’s historical booklet groups R 57 + R 63 at 1,800; the individual figures reconcile to that grouped total. The grouped figure is not assigned separately to every model. No present-day survivor count or independently audited completion census is claimed.
Gallery
Specifications
Factory specifications may vary by model year, market and configuration.
Identity & production
- Official model
- BMW R 57
- Base model
- R 57
- Edition
- R 57
- Worldwide production
- 1,006 reported for the original model
Powertrain & performance
- Engine
- BMW 494 cc flat-twin engine petrol engine
- Powertrain
- Petrol
Motorcycle specifications
- Category
- Road motorcycle
Authenticity & identification
Identification should separate an R 57 from an R 47 assembled with later parts. Compare the documented chassis identity with engine, induction and front-brake details. Keep records of repaired or replaced components instead of relying on an early-style saddle or paint scheme. Any racing association needs a separate documentary connection to the motorcycle concerned.
