Head to head
Ifor Williams HB511 vs Indespension U-Tilt Flatbed (16'2" x 6'6")
The Indespension U-Tilt Flatbed (16'2" x 6'6") is rated 800kg heavier gross.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Indespension U-Tilt Flatbed (16'2" x 6'6") is rated 800kg heavier gross.
Specifications side by side
| Ifor Williams HB511 | Indespension U-Tilt Flatbed (16'2" x 6'6") | |
|---|---|---|
| Gross weight | 2,700kg | 3500kg |
| Unladen weight | 1,000kg | 1000kg |
| Internal length | 3.52m | - |
| Internal width | 1.79m | - |
| Brakes | Braked | - |
| Bed length | - | 16'2" / 4930mm |
| Bed width | - | 6'6" / 1940mm |
| Payload | - | 2500kg |
Sources: Ifor Williams HB511, 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 HB511 if...
The wider step up from the HB506, for larger horses or owners who want more room in transit. The extra 12cm of internal width and 36cm of length cost 80kg unladen, which is worth checking against your tow vehicle before choosing it over the HB506.
Listed by
- Trek-Trailers Lincolnshire - Doncaster, Belton
- Trek-Trailers Suffolk - Bury Saint Edmunds
- R M Trailer Centre - Middlesbrough, North Ormesby
- Blains Trailers & Tyres - Hemel Hempstead, Great Gaddesden
- Horse Trailer Sales - Robertsbridge, Staplecross
- Trek-Trailers Three Counties - Hereford
Buy or hire the U-Tilt Flatbed (16'2" x 6'6") if...
- you want one that is rated 800kg heavier gross
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 HB511 and the Indespension U-Tilt Flatbed (16'2" x 6'6")?
The Indespension U-Tilt Flatbed (16'2" x 6'6") is rated 800kg heavier gross. The Ifor Williams HB511 is a two-horse trailer, twin axle, wider body; 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..
Can I tow the Ifor Williams HB511 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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