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The 1977 BMW R100RS and 1985 BMW K75 represent two chapters in BMW's storied history.
The 1977 BMW R100RS from Germany was powered by a 980cc OHV flat-twin producing 70hp at 7250rpm. Weighing 210.0kg (463 lbs) and with a seat height of 810mm, it was aimed at touring riders.
The 1985 BMW K75 by contrast offered 740cc of DOHC inline-3 power, delivering 75hp at 8500rpm. Tipping the scales at 210.0kg (463 lbs) with a top speed of 200km/h (124 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 1977 BMW R100RS from Germany was powered by a 980cc OHV flat-twin producing 70hp at 7250rpm. Weighing 210.0kg (463 lbs) and with a seat height of 810mm, it was aimed at touring riders.
The 1985 BMW K75 by contrast offered 740cc of DOHC inline-3 power, delivering 75hp at 8500rpm. Tipping the scales at 210.0kg (463 lbs) with a top speed of 200km/h (124 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
| 1977 BMW R100RS | 1985 BMW K75 | |
|---|---|---|
| Displacement | 980 cc | 740 cc |
| Power | 70 hp | 75 hp |
| Torque | 72.0 Nm | 66.0 Nm |
| Cylinders | 2 | 3 |
| Top Speed | 200 km/h | 200 km/h |
| Quarter Mile | — | — |
| Dry Weight | 210.0 kg | 210.0 kg |
| Wet Weight | 228.0 kg | 228.0 kg |
| Seat Height | 810 mm | 810 mm |
| Wheelbase | 1465 mm | 1496 mm |
| Fuel Capacity | 24.0 L | 21.0 L |
| Gears | 5 -speed | 5 -speed |
The Verdict
Comparing these two BMW machines reveals the brand's evolution. The 1977 BMW R100RS laid the groundwork with 70hp, while the later 1985 BMW K75 pushed output to 75hp. From a collector's perspective, the 1977 BMW R100RS holds the edge with a 8/10 rating. Either way, both are worthy additions to any BMW collection.
About the 1977 BMW R100RS
A touring motorcycle from 1977, the 1977 BMW R100RS delivers 70hp from its 980cc OHV flat-twin engine.
Full 1977 BMW R100RS Profile →About the 1985 BMW K75
Born in 1985, the 1985 BMW K75 is a 740cc triple-cylinder standard motorcycle producing 75hp from BMW.
Full 1985 BMW K75 Profile →