BMW R 75/5

BMW R75/5

      1972 R75/5 with "Toaster" tank and dual saddle.

Date 1969 - 1973
Number sold 38,370

U.S. Price: $1,848.-   (1969)
U.S. Price: $2,225.-   (1973)
($11,942 in 2015 adjusted for inflation)
German Price: DM  4,996.-




Engine
Typefour-stroke, two-cylinder, horizontally-opposed "Boxer" engine, air-cooled
Bore/stroke82 x 70.6 mm
Cubic capacity745 cm3 (45 in.3)
Max power50 HP / 36.8 kW at 6200 rpm
Max torque 43 ft. lbs. / 60 Nm at 5000 rpm
Compression ratio9.0 : 1
Valves per cylinder2
Valve controlohv, using push rod and rocker arm
Carburation system2 constant depression carburetors Type Bing 64/32/4-3 or 64/32/9-10
Engine lubricationwet sump
Power Transmission
Clutchdry single plate, with diaphragm spring
Number of gears4
shifting dog-type gearbox (ratchet foot lever)
Gear ratios3.896 / 2.578 / 1.875 / 1.50 : 1
Rear wheel ratio 1 : 3.2
Bevel/crown wheel10 / 32 teeth
Electrical System
AlternatorBosch 12 V / 180 W
Ignitionbattery ignition
StarterBosch 0.5 PS
Spark plugsBosch W 230 T 30 / Beru 230/14/3 A / Champion N 7 Y
Suspension
Type of framedouble-loop tubular frame with bolt-on rear section
Front suspensiontelescopic fork with hydraulic shock absorber
Rear suspensionlong swinging arm with strut
Spring travel208 / 125 mm
Rims front1.85 B 19
Rims rear1.85 B 18 or 2.15 B 18
Tires front3.25 S 19
Tires rear4.00 S 18
Brakes frontDuplex-drum brake Ø 200 mm
Brakes rearSimplex drum brake Ø 200 mm
Dimensions and Weights
Length x width x height 83 x 33 x 41 inches / 2100 x 850 x 1040 mm (1973 LWB: 85 x 33 x 41 inches or 2150 x 850 x 1040 mm)
Wheel base 54.5 inches / 1385 mm (1973 LWB: 56.5 inches or 1435 mm)
Ground clearance6.5 inches / 165 mm ( at 165 lbs. or 75 kg load)
Tank capacity6.3 gals. / 24 liters (from 1971: 4.5 gals. or 17 liters)
Unladen weight, full tank 463 lbs. / 210 kg (from 1971: 452 lbs. or 205 kg)
Max permissible weight877 lbs. / 398 kg
Performance
Fuel consumption52.3 MPG (4.5 liters / 100 km) at constant 90 km/h or 56 mph
Acceleration0-100 km/h (0-62 mph) at 6.4 seconds
Top speed109 mph / 175 km/h