Adventure Motorcycles
1991BMW R 65 GS
18 fields on record
The 1991 BMW R 65 G/S is a lightweight enduro bike ideal for riders seeking accessible adventure touring and mild off-road capability. Its air-cooled 650cc boxer engine delivers modest but adequate power for varied terrain. Known for reliability, comfort, and manageable handling, this model suits both novice adventurers and experienced riders valuing simplicity over performance.
- Capacity
- 650.0 ccm
- Engine
- Boxer, four-stroke
- Gearbox
- 5-speed
- Wet weight
- 198.0 kg
- Seat height
- Not on record
Know it? Add it → - Power
- 27.0 HP (19.9 kW)
What’s new for the 1991 BMW R 65 GS
vs the 1990| Spec | 1990 | 1991 |
|---|---|---|
| Power | 27.0 HP (19.9 kW) @ 5500 RPM | 27.0 HP (19.9 kW) |
| Top speed | 146.0 km/h (90.7 mph) | not listed |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built as a lightweight dual-sport tourer, it's best suited to gentle green-laning, backroad exploration, and classic-bike enthusiast riding rather than outright speed or technical off-roading.
- Built for
- It rewards a relaxed, mechanically-sympathetic riding style with charming boxer character, torquey low-end feel, and vintage BMW simplicity over outright capability.
- Not ideal for
- This is not the bike for riders seeking modern power, high-speed touring comfort, or serious technical off-road performance.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Engine
- Capacity
- 650.0 ccm
- Power
- 27.0 HP (19.9 kW)
- Engine type
- Boxer, four-stroke
- Power/weight ratio
- 0.1364 HP/kg (wet)
- Bore x stroke
- 82.0 x 61.5 mm
- Compression
- 8.4:1
- Cooling system
- Air
- Valves per cylinder
- 2
- Torque
- Not on record - add it
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Shaft
Dimensions & weight
Brakes & wheels
- Front brakes
- Single disc
- Rear brakes
- Expanding brake
- Front tyre
- 3.00-21
- Rear tyre
- 4.00-18
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 1988 | 1989 | 1990 | 1991 |
|---|---|---|---|---|
| Capacity | 649 cc | 649 cc | 649 cc | 650 cc |
| Fuel capacity | 19.5 L | 19.5 L | 19.5 L | 19.5 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the BMW R 65 GS?
The 1991 BMW R 65 GS has a Capacity of 650.0 ccm (39.67 cubic inches).
What engine power does the BMW R 65 GS have?
The 1991 BMW R 65 GS has a Power of 27.0 HP (19.9 kW).
How many gears does the BMW R 65 GS have?
The 1991 BMW R 65 GS has a Gearbox of 5-speed.
How much does the BMW R 65 GS weigh?
The 1991 BMW R 65 GS has a Wet weight of 198.0 kg (436.5 pounds).
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