touring / default rider 183 cm
BMW R 18 Classic vs Indian Motorcycle Roadmaster Dark Horse ergonomics
BMW R 18 Classic and Indian Motorcycle Roadmaster Dark Horse 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 18 Classic
All contacts reached
Indian Motorcycle Roadmaster Dark Horse
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 18 Classic lists a 710 mm seat; the Indian Motorcycle Roadmaster Dark Horse lists 699 mm — a 11 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 Indian Motorcycle Roadmaster Dark Horse 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 18 Classic | Indian Motorcycle Roadmaster Dark Horse |
|---|---|---|
| Seat height | 710 mm | 699 mm |
| Wheelbase | 1,731 mm | 1,668 mm |
| Wet weight | 365 kg | 405 kg |
| Displacement | 1,802 cc | 1,890 cc |
Posture metrics
Knee angle
- BMW R 18 Classic
- Neutral (80.4 deg)
- Indian Motorcycle Roadmaster Dark Horse
- Neutral (79.0 deg)
Hip angle
- BMW R 18 Classic
- Sport (78.2 deg)
- Indian Motorcycle Roadmaster Dark Horse
- Sport (79.3 deg)
Elbow angle
- BMW R 18 Classic
- Relaxed (143.3 deg)
- Indian Motorcycle Roadmaster Dark Horse
- Relaxed (143.3 deg)
Torso lean
- BMW R 18 Classic
- Neutral (11.8 deg)
- Indian Motorcycle Roadmaster Dark Horse
- Neutral (11.0 deg)