Head to head
Ifor Williams TT3621 vs Indespension U-Tilt Flatbed (16'2" x 6'6")
The Ifor Williams TT3621 is 10kg lighter empty and carries 10kg more.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Indespension U-Tilt Flatbed (16'2" x 6'6") weighs 10kg more empty.
- Payload: the Ifor Williams TT3621 carries 10kg more.
Specifications side by side
| Ifor Williams TT3621 | Indespension U-Tilt Flatbed (16'2" x 6'6") | |
|---|---|---|
| Gross weight | 3500kg | 3500kg |
| Unladen weight | 990kg (195/60R12C tyres) or 1000kg (185/70R13C tyres) | 1000kg |
| Payload | 2510kg (195/60R12C) or 2500kg (185/70R13C) | 2500kg |
| Internal length | 3.62m / 11'9" | - |
| Internal width | 1.95m / 6'5" | - |
| Bed length | - | 16'2" / 4930mm |
| Bed width | - | 6'6" / 1940mm |
Sources: Ifor Williams TT3621, Indespension U-Tilt Flatbed (16'2" x 6'6"). 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 10kg lighter empty
- you want one that carries 10kg 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 →Buy or hire the U-Tilt Flatbed (16'2" x 6'6") if...
The U-Tilt range is Indespension's answer to ramp-loaded plant trailers, tipping the whole bed down rather than using fold-out ramps, which suits low-clearance machinery. It is generally compared with Ifor Williams' ramped GX plant trailers by hire fleets choosing between the two loading systems.
Full U-Tilt Flatbed (16'2" x 6'6") specifications →Common questions
What is the difference between the Ifor Williams TT3621 and the Indespension U-Tilt Flatbed (16'2" x 6'6")?
The Ifor Williams TT3621 is 10kg lighter empty and carries 10kg more. The Ifor Williams TT3621 is a twin axle tipping trailer, 12ft body, electric tipping; the Indespension U-Tilt Flatbed (16'2" x 6'6") is a a twin-axle tilting flatbed trailer for plant and machinery, using twin hydraulic rams to tip the bed for low loading..
Which is lighter, the Ifor Williams TT3621 or the Indespension U-Tilt Flatbed (16'2" x 6'6")?
The Ifor Williams TT3621. It is 10kg lighter empty than the Indespension U-Tilt Flatbed (16'2" x 6'6").
Which carries more, the Ifor Williams TT3621 or the Indespension U-Tilt Flatbed (16'2" x 6'6")?
The Ifor Williams TT3621, by 10kg.
Can I tow the Ifor Williams TT3621 or the Indespension U-Tilt Flatbed (16'2" x 6'6") 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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