touring / default rider 183 cm
BMW R 100 RT Mono vs Norton Motorcycles Commando 850 Interstate Mk3 ergonomics
BMW R 100 RT Mono and Norton Motorcycles Commando 850 Interstate Mk3 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 R 100 RT Mono
All contacts reached
Norton Motorcycles Commando 850 Interstate Mk3
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 R 100 RT Mono lists a 820 mm seat; the Norton Motorcycles Commando 850 Interstate Mk3 lists 838 mm — a 18 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 BMW R 100 RT Mono 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 R 100 RT Mono | Norton Motorcycles Commando 850 Interstate Mk3 |
|---|---|---|
| Seat height | 820 mm | 838 mm |
| Wheelbase | 1,466 mm | 1,441 mm |
| Wet weight | 238 kg | - |
| Displacement | 980 cc | 828 cc |
Posture metrics
Knee angle
- BMW R 100 RT Mono
- Sport (74.6 deg)
- Norton Motorcycles Commando 850 Interstate Mk3
- Sport (74.1 deg)
Hip angle
- BMW R 100 RT Mono
- Sport (83.4 deg)
- Norton Motorcycles Commando 850 Interstate Mk3
- Sport (83.8 deg)
Elbow angle
- BMW R 100 RT Mono
- Relaxed (143.3 deg)
- Norton Motorcycles Commando 850 Interstate Mk3
- Relaxed (143.3 deg)
Torso lean
- BMW R 100 RT Mono
- Neutral (8.3 deg)
- Norton Motorcycles Commando 850 Interstate Mk3
- Neutral (8.0 deg)