scooter / default rider 183 cm
BMW C 400 GT vs Yamaha NMAX 155 ergonomics
BMW C 400 GT and Yamaha NMAX 155 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 C 400 GT
All contacts reached
Yamaha NMAX 155
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 C 400 GT lists a 765 mm seat; the Yamaha NMAX 155 lists 765 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 C 400 GT | Yamaha NMAX 155 |
|---|---|---|
| Seat height | 765 mm | 765 mm |
| Wheelbase | 1,565 mm | 1,350 mm |
| Wet weight | 219 kg | 127 kg |
| Displacement | 350 cc | 155 cc |
Posture metrics
Knee angle
- BMW C 400 GT
- Sport (58.3 deg)
- Yamaha NMAX 155
- Sport (57.8 deg)
Hip angle
- BMW C 400 GT
- Neutral (91.6 deg)
- Yamaha NMAX 155
- Neutral (96.2 deg)
Elbow angle
- BMW C 400 GT
- Relaxed (143.3 deg)
- Yamaha NMAX 155
- Relaxed (143.3 deg)
Torso lean
- BMW C 400 GT
- Neutral (13.7 deg)
- Yamaha NMAX 155
- Neutral (10.6 deg)