Head to head
Ifor Williams GD84 vs Ifor Williams TT3621
The Ifor Williams GD84 is 540kg lighter empty. The Ifor Williams TT3621 is 70cm (2.5ft) wider inside and is 1.07m (3.5ft) longer inside.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Ifor Williams TT3621 weighs 540kg more empty.
- Internal width: the Ifor Williams TT3621 is 70cm (2.5ft) wider inside.
- Internal length: the Ifor Williams TT3621 is 1.07m (3.5ft) longer inside.
- Gross weight: the Ifor Williams TT3621 is rated 800kg heavier gross.
- Payload: the Ifor Williams TT3621 carries 260kg more.
Specifications side by side
| Ifor Williams GD84 | Ifor Williams TT3621 | |
|---|---|---|
| Gross weight | 2700kg | 3500kg |
| Unladen weight | 450kg | 990kg (195/60R12C tyres) or 1000kg (185/70R13C tyres) |
| Payload | 2250kg | 2510kg (195/60R12C) or 2500kg (185/70R13C) |
| Internal length | 2.55m | 3.62m / 11'9" |
| Internal width | 1.25m | 1.95m / 6'5" |
| Axles | Twin | - |
Sources: Ifor Williams GD84, Ifor Williams TT3621. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the GD84 if...
- you want one that is 540kg lighter empty
A everyday farm and smallholding trailer for moving loose loads, logs or small livestock behind a 4x4 or pickup, chosen over the single-axle GD84 when the extra payload of a twin-axle chassis is needed.
Listed by
- Blains Trailers & Tyres - Hemel Hempstead, Great Gaddesden
Buy or hire the TT3621 if...
- you want one that is 70cm (2.5ft) wider inside
- you want one that is 1.07m (3.5ft) longer inside
- you want one that is rated 800kg heavier gross
- you want one that carries 260kg 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.
Listed by
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Common questions
What is the difference between the Ifor Williams GD84 and the Ifor Williams TT3621?
The Ifor Williams GD84 is 540kg lighter empty. The Ifor Williams TT3621 is 70cm (2.5ft) wider inside and is 1.07m (3.5ft) longer inside. The Ifor Williams GD84 is a a general-purpose dropside trailer; the Ifor Williams TT3621 is a twin axle tipping trailer, 12ft body, electric tipping.
Which is lighter, the Ifor Williams GD84 or the Ifor Williams TT3621?
The Ifor Williams GD84. It is 540kg lighter empty than the Ifor Williams TT3621.
Which carries more, the Ifor Williams GD84 or the Ifor Williams TT3621?
The Ifor Williams TT3621, by 260kg.
Can I tow the Ifor Williams GD84 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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