Siimet T-8/7.5-15
Built: 1972 · Series: T-8
More machines from model year 1972
Not the right version? The data comes from vehicle registers holding many near-identical versions side by side. Photograph the data plate — we read make and type from it. Open the scanner e-mail address required
Siimet T-8 – Finnish heavy-haulage semi-trailers named after their tyre size: the T-8 range, unladen weight up to 11.2 t, gross weight up to 44.6 t, widths up to 3.15 m
Siimet is a Finnish manufacturer of heavy-haulage semi-trailers. The T-8 range names its models after their tyres: suffixes such as 7.5-15, 8.25-15 and 10.00-15 correspond to common tyre sizes used on heavy-duty trailers, while further digits such as 1200, 25, 32 or 35 mark additional equipment or axle-load steps. The T-8 range is accordingly built for exceptionally heavy and bulky loads.
Read on 3 more paragraphs
The register lists 7 versions with unladen weights from 4,700 to 11,200 kg at a gross weight of 18,000 to 44,600 kg. Lengths range from 12,000 to 14,100 mm, widths from 2,500 to 3,150 mm – the wider versions correspond to special-transport modules for machinery and construction equipment.
With gross weights of up to around 45 tonnes and widths exceeding the normal road dimension, the T-8 range belongs among the heavy-haulage and modular trailers used in Finnish forestry, mining and construction traffic to carry excavators, crawler dozers and other construction machinery. Such special transports require a separate permit from Traficom in Finland.
When buying used, the key checks are the condition of the frame and axle suspension under the high axle loads, the operation of the (often steerable) axles, the braking system with ABS/EBS, and wear on the ramps and load-securing points. Corrosion on the load-bearing main beams and the validity of the special-transport permit should also be checked; spare parts run through Finnish commercial-vehicle dealers.
Sources: SpecCodex register, model data: Siimet T-8, Zulassungsdaten Traficom (Finnland)
Technical data
Dimensions and weights
| Length | 12,000 mmcorrect |
|---|---|
| Width | 2,500 mmcorrect |
| Unladen weight | 7,000 kgcorrect |
| Gross vehicle weight | 23,000 kgcorrect |
Frequently asked questions
How much does the Siimet T-8/7.5-15 weigh?
The unladen weight is 7,000 kg.
What is the gross vehicle weight of the Siimet T-8/7.5-15?
23,000 kg.
What are the dimensions of the Siimet T-8/7.5-15?
12,000 mm × 2,500 mm.
When was the Siimet T-8/7.5-15 built?
Production years: 1972.
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.
We do not sell machines. We ask the dealers who carry this model and come back with price and lead time.
Request a quote →
We ask the suppliers and come back with price and lead time.
Request spare parts →
This page carries 5 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.
Missing a figure you were looking for? Report it →
Know this machine better? Have a photo, a manual, or know that a figure is wrong? Add it to the register →
Sources: Traficom — Finnish 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.
