bagger / default rider 183 cm
Harley-Davidson Road Glide Ultra vs Triumph Thunderbird LT ergonomics
Harley-Davidson Road Glide Ultra and Triumph Thunderbird LT 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
Harley-Davidson Road Glide Ultra
All contacts reached
Triumph Thunderbird LT
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 Harley-Davidson Road Glide Ultra lists a 699 mm seat; the Triumph Thunderbird LT lists 700 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 | Harley-Davidson Road Glide Ultra | Triumph Thunderbird LT |
|---|---|---|
| Seat height | 699 mm | 700 mm |
| Wheelbase | 1,625 mm | 1,665 mm |
| Wet weight | 415 kg | - |
| Displacement | 1,690 cc | 1,599 cc |
Posture metrics
Knee angle
- Harley-Davidson Road Glide Ultra
- Open (108.8 deg)
- Triumph Thunderbird LT
- Open (111.6 deg)
Hip angle
- Harley-Davidson Road Glide Ultra
- Sport (79.8 deg)
- Triumph Thunderbird LT
- Sport (80.0 deg)
Elbow angle
- Harley-Davidson Road Glide Ultra
- Relaxed (143.3 deg)
- Triumph Thunderbird LT
- Relaxed (143.3 deg)
Torso lean
- Harley-Davidson Road Glide Ultra
- Neutral (7.7 deg)
- Triumph Thunderbird LT
- Neutral (8.3 deg)