Head to head
Humbaur Steely vs Ifor Williams TT3621
The Ifor Williams TT3621 is rated 2,750kg heavier gross and carries 1,880kg more.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Ifor Williams TT3621 is rated 2,750kg heavier gross.
- Payload: the Ifor Williams TT3621 carries 1,880kg more.
Specifications side by side
| Humbaur Steely | Ifor Williams TT3621 | |
|---|---|---|
| Gross weight | 750kg | 3500kg |
| Payload | 630kg | 2510kg (195/60R12C) or 2500kg (185/70R13C) |
| Inner length | 2050mm | - |
| Inner width | 1095mm | - |
| Unladen weight | - | 990kg (195/60R12C tyres) or 1000kg (185/70R13C tyres) |
| Internal length | - | 3.62m / 11'9" |
| Internal width | - | 1.95m / 6'5" |
Sources: Humbaur Steely, Ifor Williams TT3621. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Steely if...
The Steely is Humbaur's budget single-axle trailer, built with a hot-dip galvanised chassis as what the manufacturer describes as an entry point into trailer ownership. It suits light garden, construction-site and hobby loads rather than heavier trade use.
Full Steely specifications →Buy or hire the TT3621 if...
- you want one that is rated 2,750kg heavier gross
- you want one that carries 1,880kg more
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.
Full TT3621 specifications →Common questions
What is the difference between the Humbaur Steely and the Ifor Williams TT3621?
The Ifor Williams TT3621 is rated 2,750kg heavier gross and carries 1,880kg more. The Humbaur Steely is a a small, unbraked single-axle flatbed trailer aimed at first-time buyers and light garden/site use.; the Ifor Williams TT3621 is a twin axle tipping trailer, 12ft body, electric tipping.
Which carries more, the Humbaur Steely or the Ifor Williams TT3621?
The Ifor Williams TT3621, by 1,880kg.
Can I tow the Humbaur Steely 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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