cruiser / default rider 183 cm
Yamaha Road Star vs Yamaha Royal Star ergonomics
Yamaha Road Star and Yamaha Royal Star 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
Yamaha Road Star
All contacts reached
Yamaha Royal Star
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 Yamaha Road Star lists a 710 mm seat; the Yamaha Royal Star lists 710 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 | Yamaha Road Star | Yamaha Royal Star |
|---|---|---|
| Seat height | 710 mm | 710 mm |
| Wheelbase | 1,688 mm | 1,695 mm |
| Wet weight | 332 kg | 330 kg |
| Displacement | 1,670 cc | 1,294 cc |
Posture metrics
Knee angle
- Yamaha Road Star
- Open (124.6 deg)
- Yamaha Royal Star
- Open (125.1 deg)
Hip angle
- Yamaha Road Star
- Sport (80.8 deg)
- Yamaha Royal Star
- Sport (80.8 deg)
Elbow angle
- Yamaha Road Star
- Relaxed (143.3 deg)
- Yamaha Royal Star
- Relaxed (143.3 deg)
Torso lean
- Yamaha Road Star
- Neutral (10.8 deg)
- Yamaha Royal Star
- Neutral (10.9 deg)