Head to head
Ifor Williams TT3621 vs Lider 39920
The Ifor Williams TT3621 is rated 2,750kg heavier gross and is 1.32m (4.5ft) longer inside. The Lider 39920 is 620kg lighter empty.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Ifor Williams TT3621 is rated 2,750kg heavier gross.
- Unladen weight: the Ifor Williams TT3621 weighs 620kg more empty.
- Internal length: the Ifor Williams TT3621 is 1.32m (4.5ft) longer inside.
- Internal width: the Ifor Williams TT3621 is 60cm (2ft) wider inside.
Specifications side by side
| Ifor Williams TT3621 | Lider 39920 | |
|---|---|---|
| Gross weight | 3500kg | 750kg |
| Unladen weight | 990kg (195/60R12C tyres) or 1000kg (185/70R13C tyres) | 370kg |
| Internal length | 3.62m / 11'9" | 230cm |
| Internal width | 1.95m / 6'5" | 135cm |
| Payload | 2510kg (195/60R12C) or 2500kg (185/70R13C) | - |
| Internal height | - | 157cm |
| Axles | - | 1 |
| Brakes | - | Unbraked |
Sources: Ifor Williams TT3621, Lider 39920. 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 1.32m (4.5ft) longer inside
- you want one that is 60cm (2ft) 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.
Listed by
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Buy or hire the 39920 if...
- you want one that is 620kg lighter empty
The smallest box van in the range, for buyers who want lockable, weatherproof storage on the move without moving up to a braked twin-axle trailer.
Listed by
- Lider Trailers - Accrington, Blackburn
Common questions
What is the difference between the Ifor Williams TT3621 and the Lider 39920?
The Ifor Williams TT3621 is rated 2,750kg heavier gross and is 1.32m (4.5ft) longer inside. The Lider 39920 is 620kg lighter empty. The Ifor Williams TT3621 is a twin axle tipping trailer, 12ft body, electric tipping; the Lider 39920 is a an unbraked single-axle enclosed box van trailer rated at 750kg gross weight..
Which is lighter, the Ifor Williams TT3621 or the Lider 39920?
The Lider 39920. It is 620kg lighter empty than the Ifor Williams TT3621.
Can I tow the Ifor Williams TT3621 or the Lider 39920 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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