Femmerr STUL329
Built: 2026 · Series: Other models
More machines from model year 2026
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Femmerr STUL329 – twelve-wheel O4-class heavy-load semi-trailer built in 2026: 47,000 kg gross weight, 80 km/h top speed.
With a gross weight of 47,000 kg, the Femmerr STUL329 sits well above the 10-tonne threshold of EU trailer class O4, in the territory of heavy-load semi-trailers. The body rests on twelve wheels in total, spread across several axle groups, a layout that at this gross weight keeps axle load within limits the road and tyres can tolerate.
Read on 3 more paragraphs
With an unladen weight of 9,650 kg, payload comes to 37,350 kg. At 13.32 m long, 2.55 m wide and with a 9.70 m wheelbase, the STUL329 is built for long, concentrated heavy loads. Unlike most trailers in this class, top speed is limited to 80 km/h, pointing to the more modest running-gear rating for sustained high speed typical of heavy-load vehicles.
The semi-trailer carries an EU type-approval number under Regulation (EU) 2018/858, the European framework for approving motor vehicles and trailers. As a twelve-wheel heavy-load semi-trailer, it runs on air brakes and typically on air suspension; towing it as a combination requires licence category CE in the EU.
When buying a used multi-axle heavy-load semi-trailer, check every axle group for even wheel-load distribution under load, check any steering axles for play and correct function, check the air suspension bellows for cracks, and check the brake system for even action across all twelve wheels, since operating safety here depends on it every time it runs.
Sources: SpecCodex-Register: Kennwerte des Modells Femmerr STUL329, Zulassungsdaten RDW (Niederlande)
Technical data
Dimensions and weights
| Length | 13,320 mmcorrect |
|---|---|
| Width | 2,550 mmcorrect |
| Wheelbase | 9,700 mmcorrect |
| Unladen weight | 9,650 kgcorrect |
| Gross vehicle weight | 47,000 kgcorrect |
Drivetrain and chassis
| Wheels | 12correct |
|---|---|
| Top speed | 80 km/hcorrect |
Frequently asked questions
How much does the Femmerr STUL329 weigh?
The unladen weight is 9,650 kg.
What is the gross vehicle weight of the Femmerr STUL329?
47,000 kg.
Up to what speed is the Femmerr STUL329 approved?
Approved up to 80 km/h.
What are the dimensions of the Femmerr STUL329?
13,320 mm × 2,550 mm.
When was the Femmerr STUL329 built?
Production years: 2026.
What to check before buying
- Search the frame and welds at the axle mounts — that is where cracks start.
- Check the brakes and the last inspection in the papers.
- Work the gross weight against the towing vehicle before buying.
- Compare the chassis number with the papers.
- Look at the floor, cover or body from the inside — rust does not show from outside.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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This page carries 10 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
The technical data on this page comes from official vehicle registration records (RDW/Traficom), not from the manufacturer.
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Sources: RDW — Dutch national vehicle register (retrieved August 2026) · How we check the data
Trailer in 3D section
Turn the model, look inside and click an assembly — each one is explained.