BMW R90S
88/100 Overall
83 On the road93 As a classic
Classic motorcycle head-to-head
BMW R90S vs Yamaha RD400
BMW R90S scores 88/100 overall against Yamaha RD400 on 81/100. On the road: 83–73. As classics: 93–88. Overall result: BMW R90S.
Photo: Schreiberling58 · CC BY-SA 3.0
Yamaha RD400
81/100 Overall
73 On the road88 As a classic
The numbers
Category-by-category result
| Category | BMW R90S | Yamaha RD400 | Advantage |
|---|---|---|---|
| road | |||
| PerformanceDirect comparison of power, acceleration and usable performance across the pre-1990 classic field. | 8 | 8 | Level |
| HandlingSteering, stability, weight and real-road manners. | 8 | 9 | Yamaha RD400 |
| BrakingDirect comparison of real stopping ability without an age allowance. | 7 | 7 | Level |
| ReliabilityEngine, electrics and general dependability when properly maintained. | 9 | 7 | BMW R90S |
| Ease of ownershipMaintenance, parts supply and access to specialist knowledge. | 9 | 7 | BMW R90S |
| ComfortRiding position, vibration and suitability for longer journeys. | 9 | 6 | BMW R90S |
| classic | |||
| StylingDesign quality, visual presence and period appeal. | 10 | 8 | BMW R90S |
| Historical importanceInfluence on motorcycling and importance within its era. | 9 | 8 | BMW R90S |
| Collector appealLong-term desirability among classic motorcycle enthusiasts. | 10 | 9 | BMW R90S |
| CharacterSound, feel, personality and memorable riding experience. | 8 | 10 | Yamaha RD400 |
Choose the BMW R90S if…
you want high-speed touring ability, engineering quality and one of BMW's most significant sporting classics.
Choose the Yamaha RD400 if…
you want sharp two-stroke performance, light handling and one of Yamaha's most entertaining road motorcycles.
Background
History
BMW R90S
The BMW R90S was produced from 1973–1976 and used a 898cc air-cooled opposed twin. Within this comparison library it stands out particularly for styling, collector appeal, reliability. It suits riders who value the qualities described in its original profile rather than choosing by specification alone.
Yamaha RD400
The Yamaha RD400 was produced from 1976–1979 and used a 398cc air-cooled two-stroke parallel twin. Within this comparison library it stands out particularly for character, handling, collector appeal. It suits riders who value the qualities described in its original profile rather than choosing by specification alone.
Interesting details
Did you know?
BMW R90S
- Its production span in this library runs from 1973 to 1976.
- The recorded engine description is: 898cc air-cooled opposed twin.
- Its strongest comparison scores are styling, collector appeal, reliability.
Yamaha RD400
- Its production span in this library runs from 1976 to 1979.
- The recorded engine description is: 398cc air-cooled two-stroke parallel twin.
- Its strongest comparison scores are character, handling, collector appeal.
Present-day appeal
Collector notes
BMW R90S
Collector interest is strongest where condition, originality and correct period details support the identity of the BMW R90S. Its library score for styling is 10/10. Values and desirability can vary substantially between years, specifications and restoration quality, so individual examples should be assessed on their own evidence.
Yamaha RD400
Collector interest is strongest where condition, originality and correct period details support the identity of the Yamaha RD400. Its library score for character is 10/10. Values and desirability can vary substantially between years, specifications and restoration quality, so individual examples should be assessed on their own evidence.
Before you buy
Buying checks
BMW R90S
- Confirm the frame and engine identity match the advertised model and year.
- Check cold starting, smoke, oil leaks and unusual mechanical noise.
- Inspect the frame, wheels, brakes and suspension for wear, damage or poor repairs.
- Verify that important model-specific parts have not been replaced with incorrect later components.
- Review the paperwork, ownership history and any restoration invoices before purchase.
Yamaha RD400
- Confirm the frame and engine identity match the advertised model and year.
- Check cold starting, smoke, oil leaks and unusual mechanical noise.
- Check the oil-injection or premix arrangement, crank seals and exhaust condition carefully.
- Inspect the frame, wheels, brakes and suspension for wear, damage or poor repairs.
- Verify that important model-specific parts have not been replaced with incorrect later components.
- Review the paperwork, ownership history and any restoration invoices before purchase.
Period opposition
Historic rivals
Rivals to the BMW R90S
Rivals to the Yamaha RD400
Final result
The verdict
BMW R90S wins the direct on-the-road comparison. BMW R90S wins the classic-motorcycle comparison. BMW R90S takes the overall result after the road and classic scores are weighted equally.