standard / default rider 183 cm
BMW R75/5 vs Kawasaki KZ400 ergonomics
BMW R75/5 and Kawasaki KZ400 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 R75/5
All contacts reached
Kawasaki KZ400
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 R75/5 lists a 850 mm seat; the Kawasaki KZ400 lists 830 mm — a 20 mm difference. 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.
On seat height alone, the Kawasaki KZ400 has the easier modeled ground reach. Load your measurements into the simulator to compare the model, then verify both motorcycles in person.
Geometry snapshot
| Spec | BMW R75/5 | Kawasaki KZ400 |
|---|---|---|
| Seat height | 850 mm | 830 mm |
| Wheelbase | 1,385 mm | 1,360 mm |
| Wet weight | 205 kg | - |
| Displacement | 745 cc | 398 cc |
Posture metrics
Knee angle
- BMW R75/5
- Sport (57.9 deg)
- Kawasaki KZ400
- Sport (57.9 deg)
Hip angle
- BMW R75/5
- Neutral (95.4 deg)
- Kawasaki KZ400
- Neutral (95.9 deg)
Elbow angle
- BMW R75/5
- Relaxed (143.3 deg)
- Kawasaki KZ400
- Relaxed (143.3 deg)
Torso lean
- BMW R75/5
- Neutral (11.1 deg)
- Kawasaki KZ400
- Neutral (10.7 deg)