Head to head
Ifor Williams GX125 HD vs Ifor Williams TT3621
The Ifor Williams GX125 HD is 230kg lighter empty and carries 230kg more.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Ifor Williams TT3621 weighs 230kg more empty.
- Payload: the Ifor Williams GX125 HD carries 230kg more.
Specifications side by side
| Ifor Williams GX125 HD | Ifor Williams TT3621 | |
|---|---|---|
| Gross weight | 3500kg | 3500kg |
| Unladen weight | 760kg | 990kg (195/60R12C tyres) or 1000kg (185/70R13C tyres) |
| Payload | 2740kg | 2510kg (195/60R12C) or 2500kg (185/70R13C) |
| Internal bed | 3.66m x 1.57m | - |
| Internal length | - | 3.62m / 11'9" |
| Internal width | - | 1.95m / 6'5" |
Sources: Ifor Williams GX125 HD, Ifor Williams TT3621. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the GX125 HD if...
- you want one that is 230kg lighter empty
- you want one that carries 230kg more
For plant hire firms carrying longer machines such as excavators with extended dipper arms or tracked dumpers that need the extra bed length over the GX105HD.
Listed by
- Blains Trailers & Tyres - Hemel Hempstead, Great Gaddesden
Buy or hire the TT3621 if...
The largest Ifor Williams tipper. A 3.6m by 1.95m body is chosen for bulky, lighter loads - green waste, clearance and bark - where volume runs out before weight does, and it is a staple of plant and tool hire fleets. Formerly sold as the TT126.
Listed by
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Common questions
What is the difference between the Ifor Williams GX125 HD and the Ifor Williams TT3621?
The Ifor Williams GX125 HD is 230kg lighter empty and carries 230kg more. The Ifor Williams GX125 HD is a a longer heavy-duty plant trailer; the Ifor Williams TT3621 is a twin axle tipping trailer, 12ft body, electric tipping.
Which is lighter, the Ifor Williams GX125 HD or the Ifor Williams TT3621?
The Ifor Williams GX125 HD. It is 230kg lighter empty than the Ifor Williams TT3621.
Which carries more, the Ifor Williams GX125 HD or the Ifor Williams TT3621?
The Ifor Williams GX125 HD, by 230kg.
Can I tow the Ifor Williams GX125 HD or the Ifor Williams TT3621 on a car licence?
Yes, as far as the licence goes. Both are rated at or under 3,500kg gross, and a car (B) licence has covered towing up to 3,500kg since 16 December 2021. Your car still has to be rated to tow the loaded weight - check the handbook or the VIN plate.
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