Head to head
Ifor Williams TT3621 vs Lider 39401
The Lider 39401 is 860kg lighter empty. The Ifor Williams TT3621 is rated 2,750kg heavier gross and is 1.84m (6ft) longer inside.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Ifor Williams TT3621 weighs 860kg more empty.
- Gross weight: the Ifor Williams TT3621 is rated 2,750kg heavier gross.
- Internal length: the Ifor Williams TT3621 is 1.84m (6ft) longer inside.
- Internal width: the Ifor Williams TT3621 is 69cm (2.5ft) wider inside.
Specifications side by side
| Ifor Williams TT3621 | Lider 39401 | |
|---|---|---|
| Gross weight | 3500kg | 750kg |
| Unladen weight | 990kg (195/60R12C tyres) or 1000kg (185/70R13C tyres) | 130kg |
| Internal length | 3.62m / 11'9" | 178cm |
| Internal width | 1.95m / 6'5" | 126cm |
| Payload | 2510kg (195/60R12C) or 2500kg (185/70R13C) | - |
| Axles | - | 1 |
| Brakes | - | Unbraked |
Sources: Ifor Williams TT3621, Lider 39401. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the TT3621 if...
- you want one that is rated 2,750kg heavier gross
- you want one that is 1.84m (6ft) longer inside
- you want one that is 69cm (2.5ft) wider inside
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 →Buy or hire the 39401 if...
- you want one that is 860kg lighter empty
A step up from the 39400E for owners of larger or heavier motorcycles who still want to stay under the unbraked 750kg threshold.
Full 39401 specifications →Common questions
What is the difference between the Ifor Williams TT3621 and the Lider 39401?
The Lider 39401 is 860kg lighter empty. The Ifor Williams TT3621 is rated 2,750kg heavier gross and is 1.84m (6ft) longer inside. The Ifor Williams TT3621 is a twin axle tipping trailer, 12ft body, electric tipping; the Lider 39401 is a an unbraked single-axle trailer for carrying one motorcycle..
Which is lighter, the Ifor Williams TT3621 or the Lider 39401?
The Lider 39401. It is 860kg lighter empty than the Ifor Williams TT3621.
Can I tow the Ifor Williams TT3621 or the Lider 39401 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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