sport-touring / default rider 183 cm
BMW F 900 XR vs Yamaha TDM900 ergonomics
BMW F 900 XR and Yamaha TDM900 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 F 900 XR
All contacts reached
Yamaha TDM900
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 F 900 XR lists a 825 mm seat; the Yamaha TDM900 lists 825 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 F 900 XR | Yamaha TDM900 |
|---|---|---|
| Seat height | 825 mm | 825 mm |
| Wheelbase | 1,521 mm | 1,485 mm |
| Wet weight | 219 kg | - |
| Displacement | 895 cc | 897 cc |
Posture metrics
Knee angle
- BMW F 900 XR
- Sport (58.1 deg)
- Yamaha TDM900
- Sport (58.0 deg)
Hip angle
- BMW F 900 XR
- Neutral (89.1 deg)
- Yamaha TDM900
- Neutral (89.9 deg)
Elbow angle
- BMW F 900 XR
- Relaxed (143.3 deg)
- Yamaha TDM900
- Relaxed (143.3 deg)
Torso lean
- BMW F 900 XR
- Neutral (13.9 deg)
- Yamaha TDM900
- Neutral (13.5 deg)