1955 BMW R50

Specifications
- Category
- Allround
- Displacement
- 494.0 ccm (30.14 cubic inches)
- Displacement (cc)
- 494.00
- Engine details
- Two cylinder boxer, four-stroke
- Power
- 26.0 HP (19.0 kW) @ 5800 RPM
- Top speed
- 140.0 km/h (87.0 mph)
- Compression
- 6.8:1
- Bore × stroke
- 68.0 x 68.0 mm (2.7 x 2.7 inches)
- Fuel system
- Carburettor. 24mm Bing
- Fuel control
- Overhead Valves (OHV)
- Ignition
- Magneto
- Lubrication
- Wet sump
- Cooling
- Air
- Gearbox
- 4-speed
- Transmission
- Shaft drive (cardan) (final drive)
- Clutch
- Dry-single plate-cable operated
- Frame
- Steel doble loop tubular
- Front suspension
- Cartridge
- Rear suspension
- Twin shock-Swingarm
- Front tyre
- 3.50-18
- Rear tyre
- 3.50-18
- Front brakes
- Expanding brake (drum brake). Duplex full hub
- Front brake Ø
- 200 mm (7.9 inches)
- Rear brakes
- Expanding brake (drum brake). Simplex full hub
- Rear brake Ø
- 200 mm (7.9 inches)
- Wet weight
- 195.0 kg (429.9 pounds)
- Height
- 980 mm (38.6 inches)
- Length
- 2125 mm (83.7 inches)
- Width
- 660 mm (26.0 inches)
- Wheelbase
- 1380 mm (54.3 inches)
- Starter
- Kick
The 1955 BMW R50
1955 BMW R50 sits in the middle of BMW's postwar boxer lineup, the sensible all-rounder between the smaller singles and the sportier R69 that would follow. This is a shaft-driven twin built for covering real distance without drama, the kind of bike that rewards a relaxed hand and a long day in the saddle rather than aggressive riding. The Earles-fork front end and boxer layout give it a low, planted feel at speed, and the low overall weight keeps it manageable at parking-lot speeds despite its touring intentions. Owners tend to describe it less as thrilling and more as trustworthy, which was exactly the point in the mid-1950s European market.
The 1955 model carried over without significant mechanical changes from the prior year — buyers comparing it to a 1954 example should focus on mileage, service history, and condition rather than spec differences.
Today the 1955 BMW R50 attracts riders who already understand vintage BMW ownership, often stepping down from larger modern tourers in search of something mechanically honest and rideable rather than a garage ornament. Collectors interested in early postwar German engineering also watch this model, since well-kept examples remain usable rather than purely decorative.
Auction history
| Date | Listing | Price | Mileage | Source |
|---|---|---|---|---|
| Apr 9, 2022 | 1955 BMW R50 w/Steib Sidecar | $15,000 | — | Bring a Trailer |
| Aug 26, 2021 | 1955 BMW R50 | $12,888 | — | Bring a Trailer |

