VS
The 1973 BMW R90S and 1980 BMW R80G/S represent two chapters in BMW's storied history.
The 1973 BMW R90S from Germany was powered by a 898cc OHV flat-twin producing 67hp at 7000rpm. Weighing 200.0kg (441 lbs) and with a seat height of 810mm, it was aimed at sportbike riders.
The 1980 BMW R80G/S by contrast offered 798cc of OHV flat-twin power, delivering 50hp at 6500rpm. Tipping the scales at 186.0kg (410 lbs) with a top speed of 165km/h (103 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 1973 BMW R90S from Germany was powered by a 898cc OHV flat-twin producing 67hp at 7000rpm. Weighing 200.0kg (441 lbs) and with a seat height of 810mm, it was aimed at sportbike riders.
The 1980 BMW R80G/S by contrast offered 798cc of OHV flat-twin power, delivering 50hp at 6500rpm. Tipping the scales at 186.0kg (410 lbs) with a top speed of 165km/h (103 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
| 1973 BMW R90S | 1980 BMW R80G/S | |
|---|---|---|
| Displacement | 898 cc | 798 cc |
| Power | 67 hp | 50 hp |
| Torque | 68.0 Nm | 52.0 Nm |
| Cylinders | 2 | 2 |
| Top Speed | 200 km/h | 165 km/h |
| Quarter Mile | — | — |
| Dry Weight | 200.0 kg | 186.0 kg |
| Wet Weight | 215.0 kg | 200.0 kg |
| Seat Height | 810 mm | 850 mm |
| Wheelbase | 1465 mm | 1465 mm |
| Fuel Capacity | 17.0 L | 21.5 L |
| Gears | 5 -speed | 5 -speed |
The Verdict
Comparing these two BMW machines reveals the brand's evolution. The 1973 BMW R90S laid the groundwork with 67hp, while the later 1980 BMW R80G/S pushed output to 50hp. From a collector's perspective, the 1973 BMW R90S holds the edge with a 9/10 rating. Either way, both are worthy additions to any BMW collection.
About the 1973 BMW R90S
The 1973 1973 BMW R90S packs a 898cc OHV flat-twin engine with 67hp into a sport bike package from BMW.
Full 1973 BMW R90S Profile →About the 1980 BMW R80G/S
The 1980 1980 BMW R80G/S packs a 798cc OHV flat-twin engine with 50hp into a dual-sport package from BMW.
Full 1980 BMW R80G/S Profile →