dual-sport / default rider 183 cm
BMW G 650 GS Sertao vs Yamaha XT660R ergonomics
BMW G 650 GS Sertao and Yamaha XT660R 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 G 650 GS Sertao
All contacts reached
Yamaha XT660R
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 G 650 GS Sertao lists a 861 mm seat; the Yamaha XT660R lists 865 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 G 650 GS Sertao | Yamaha XT660R |
|---|---|---|
| Seat height | 861 mm | 865 mm |
| Wheelbase | 1,484 mm | 1,505 mm |
| Wet weight | 193 kg | - |
| Displacement | 652 cc | 660 cc |
Posture metrics
Knee angle
- BMW G 650 GS Sertao
- Sport (67.5 deg)
- Yamaha XT660R
- Sport (67.6 deg)
Hip angle
- BMW G 650 GS Sertao
- Neutral (107.1 deg)
- Yamaha XT660R
- Neutral (106.7 deg)
Elbow angle
- BMW G 650 GS Sertao
- Relaxed (143.3 deg)
- Yamaha XT660R
- Relaxed (143.3 deg)
Torso lean
- BMW G 650 GS Sertao
- Neutral (7.0 deg)
- Yamaha XT660R
- Neutral (7.3 deg)