standard / default rider 183 cm
BMW R80/7 vs Yamaha XSR900 ergonomics
BMW R80/7 and Yamaha XSR900 have modeled posture scores within three points for the 183 cm default rider. Treat this as a planning estimate; posture preference, data confidence, and a real test sit still matter.
Modeled fit comparison
BMW R80/7
All contacts reached
Yamaha XSR900
All contacts reached
The modeled scores are within three points, so the result does not distinguish a higher-scoring bike. Treat the result as a planning estimate and compare each bike's geometry confidence before a real test sit.
Rider fit: reaching the ground
The BMW R80/7 lists a 810 mm seat; the Yamaha XSR900 lists 810 mm, within a few millimetres of each other. Seat height is only a first-pass ground-reach input. It does not establish safety or actual foot contact. Seat width, suspension sag, boots, mobility, load, and individual proportions can materially change the result.
Geometry snapshot
| Spec | BMW R80/7 | Yamaha XSR900 |
|---|---|---|
| Seat height | 810 mm | 810 mm |
| Wheelbase | 1,465 mm | 1,495 mm |
| Wet weight | 215 kg | 193 kg |
| Displacement | 797 cc | 890 cc |
Posture metrics
Knee angle
- BMW R80/7
- Sport (58.1 deg)
- Yamaha XSR900
- Sport (58.1 deg)
Hip angle
- BMW R80/7
- Neutral (93.8 deg)
- Yamaha XSR900
- Neutral (93.1 deg)
Elbow angle
- BMW R80/7
- Relaxed (143.3 deg)
- Yamaha XSR900
- Relaxed (143.3 deg)
Torso lean
- BMW R80/7
- Neutral (12.2 deg)
- Yamaha XSR900
- Neutral (12.7 deg)