moped / default rider 183 cm
Vespa Primavera RED 50 vs Yamaha PG-1 ergonomics
Vespa Primavera RED 50 and Yamaha PG-1 land within a few ergonomic points for the default rider, so the better choice comes down to posture preference and bike category.
Fit verdict
Vespa Primavera RED 50
All contacts reached
Yamaha PG-1
All contacts reached
The two bikes are close enough that posture preference matters more than the overall score.
Rider fit: reaching the ground
The Vespa Primavera RED 50 has a 790 mm seat; the Yamaha PG-1 sits at 795 mm — a 5 mm difference. As a rule of thumb you flat-foot a bike when your inseam roughly matches its seat height: about 79 cm for the Vespa Primavera RED 50 and 80 cm for the Yamaha PG-1.
That makes the Vespa Primavera RED 50 the easier reach to the ground — the safer pick for shorter riders or anyone who wants both feet planted at a stop — while the Yamaha PG-1 gives taller riders more legroom and a more open knee bend. Load your own height and inseam into the simulator to see exactly how each one fits you.
Geometry snapshot
| Spec | Vespa Primavera RED 50 | Yamaha PG-1 |
|---|---|---|
| Seat height | 790 mm | 795 mm |
| Wheelbase | 1,330 mm | 1,280 mm |
| Wet weight | 115 kg | 107 kg |
| Displacement | 50 cc | 114 cc |
Posture metrics
Knee angle
- Vespa Primavera RED 50
- Sport (57.8 deg)
- Yamaha PG-1
- Sport (57.7 deg)
Hip angle
- Vespa Primavera RED 50
- Neutral (96.6 deg)
- Yamaha PG-1
- Neutral (97.7 deg)
Elbow angle
- Vespa Primavera RED 50
- Relaxed (143.3 deg)
- Yamaha PG-1
- Relaxed (143.3 deg)
Torso lean
- Vespa Primavera RED 50
- Neutral (10.3 deg)
- Yamaha PG-1
- Neutral (9.5 deg)