bagger / default rider 183 cm
BMW R 18 Classic vs Harley-Davidson Road Glide ST ergonomics
BMW R 18 Classic and Harley-Davidson Road Glide ST 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
Harley-Davidson Road Glide ST
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 711 mm seat; the Harley-Davidson Road Glide ST lists 714 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 R 18 Classic | Harley-Davidson Road Glide ST |
|---|---|---|
| Seat height | 711 mm | 714 mm |
| Wheelbase | 1,730 mm | 1,626 mm |
| Wet weight | 365 kg | 382 kg |
| Displacement | 1,802 cc | 1,923 cc |
Posture metrics
Knee angle
- BMW R 18 Classic
- Open (116.6 deg)
- Harley-Davidson Road Glide ST
- Open (109.0 deg)
Hip angle
- BMW R 18 Classic
- Sport (80.5 deg)
- Harley-Davidson Road Glide ST
- Sport (79.8 deg)
Elbow angle
- BMW R 18 Classic
- Relaxed (143.3 deg)
- Harley-Davidson Road Glide ST
- Relaxed (143.3 deg)
Torso lean
- BMW R 18 Classic
- Neutral (9.3 deg)
- Harley-Davidson Road Glide ST
- Neutral (7.7 deg)