Comming out of Germany the BMW R65 was a light touring motorcycle introduced by BMW in 1978 to add a mid-size motorcycle to its product line.
The R65 is fitted with a type 248/1 engine, a different version of the well known BMW type 247, also known as an airhead.
The engine is an 648 cc, OHV, two valves per cylinder, air-cooled flat-twin or "boxer" engine. The R65 weighs 205 kg (455 lb) with a full tank of fuel and has a five speed gearbox connected to a shaft final drive. From 1981 on, the R65 was fitted with breaker-less electronic ignition. This further improved the already good reliability of the bike.
Following standard BMW practice of the time, two 32 mm Bing CV carburettors were used and the R65 used a single dry plate clutch.
The R65 features a smaller fuel tank than other larger BMW airheads, with a 22 litres (4.8 imp gal; 5.8 US gal) capacity which includes a 0.5 gallon reserve.
This Classic 1984 BMW R65 is in good condition with a strong running motor. The exterior needs some TLC, but with the quality of contruction of BMW, it's no wonder this Bike has lasted into the next Century.
Engine and transmission
Engine type: 2 cylinders, 4-stroke, Boxer
Displacement: 649 cc (39.65 cubic inches)
Bore × stroke: 3.23 inch × 2.42 inch (oversquare - shortstroke)
Cooling system: Air cooled
Power: 50.03 HP (36.8 kW) @ 7250 rpm
Torque: 52.3 Nm (38.57 lb-ft) @ 6500 rpm
Throttle: Cable operated
Valve train: OHV, variable
Valves per cylinder: 2
Fuel and ignition
Sparks per cylinder: 1
Fuel supply system: Carburetor
Funnel diameter: 1.26 inch
Engine mounting: Longitudinal
Lubrication system: Wet sump
Gear box: Manual 5-speed
Clutch: Dry, single plate, cable operated
Final drive: Shaft
Spark plug pipe type: Bosch, W 5 D
Length: 83.1 inch
Width: 27.1 inch
Height: 42.9 inch
Wheel base: 55.1 inch
Ground clearance: 5.12 inch
Seat height: 31.9 inch
Curb weight: 451.9 lbs
Chassis and suspension
Frame type: steel, Double cradle frame
Suspension travel: 6.89 inch
Brake: Single Disk, Ø10.24 inch
Tire: 83 / R18 S
Suspension: twin shock, Swingarm
Suspension travel: 4.33 inch
Brake: Drum, Ø7.87 inch
Tire: 102 / R18 S
ABS available: No
Power-to-weight ratio: 0.18 KW/lbs(5.57 lbs/HP)
Acceleration (0-60 mph): 5.8 sec
Top speed: 108.74 mph
Fuel capacity: 5.81 gals
Number of riders: 2 persons