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The 1970 BMW R75/5 and 1975 BMW R90/6 represent two chapters in BMW's storied history.
The 1970 BMW R75/5 from Germany was powered by a 745cc OHV flat-twin producing 50hp at 6200rpm. Weighing 200.0kg (441 lbs) and with a seat height of 800mm, it was aimed at touring riders.
The 1975 BMW R90/6 by contrast offered 898cc of OHV flat-twin power, delivering 60hp at 6500rpm. Tipping the scales at 200.0kg (441 lbs) with a top speed of 190km/h (118 mph), it offered a distinct riding experience. 1970s bikes from the Japanese superbike revolution are increasingly sought after. Clean, original examples have seen significant value appreciation.
The 1970 BMW R75/5 from Germany was powered by a 745cc OHV flat-twin producing 50hp at 6200rpm. Weighing 200.0kg (441 lbs) and with a seat height of 800mm, it was aimed at touring riders.
The 1975 BMW R90/6 by contrast offered 898cc of OHV flat-twin power, delivering 60hp at 6500rpm. Tipping the scales at 200.0kg (441 lbs) with a top speed of 190km/h (118 mph), it offered a distinct riding experience. 1970s bikes from the Japanese superbike revolution are increasingly sought after. Clean, original examples have seen significant value appreciation.
Specifications Comparison
| 1970 BMW R75/5 | 1975 BMW R90/6 | |
|---|---|---|
| Displacement | 745 cc | 898 cc |
| Power | 50 hp | 60 hp |
| Torque | 54.0 Nm | 62.0 Nm |
| Cylinders | 2 | 2 |
| Top Speed | 175 km/h | 190 km/h |
| Quarter Mile | — | — |
| Dry Weight | 200.0 kg | 200.0 kg |
| Wet Weight | 216.0 kg | 215.0 kg |
| Seat Height | 800 mm | 810 mm |
| Wheelbase | 1440 mm | 1465 mm |
| Fuel Capacity | 17.0 L | 17.0 L |
| Gears | 5 -speed | 5 -speed |
The Verdict
Comparing these two BMW machines reveals the brand's evolution. The 1970 BMW R75/5 laid the groundwork with 50hp, while the later 1975 BMW R90/6 pushed output to 60hp. From a collector's perspective, the 1970 BMW R75/5 holds the edge with a 7/10 rating. Either way, both are worthy additions to any BMW collection.
About the 1970 BMW R75/5
BMW released the 1970 BMW R75/5 in 1970 with a 745cc OHV flat-twin powerplant making 50hp — a definitive touring motorcycle.
Full 1970 BMW R75/5 Profile →About the 1975 BMW R90/6
The 1975 1975 BMW R90/6 is a 898cc twin-cylinder touring motorcycle that became one of BMW's most memorable motorcycles of the 1970s.
Full 1975 BMW R90/6 Profile →