Head to head
Ifor Williams HB510XL vs Indespension U-Tilt Flatbed (16'2" x 6'6")
The Indespension U-Tilt Flatbed (16'2" x 6'6") is 290kg lighter empty and carries 290kg more.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Ifor Williams HB510XL weighs 290kg more empty.
- Payload: the Indespension U-Tilt Flatbed (16'2" x 6'6") carries 290kg more.
Specifications side by side
| Ifor Williams HB510XL | Indespension U-Tilt Flatbed (16'2" x 6'6") | |
|---|---|---|
| Gross weight | 3500kg | 3500kg |
| Unladen weight | 1290kg | 1000kg |
| Payload | 2210kg | 2500kg |
| Internal length | 4.25m | - |
| Internal width | 1.74m | - |
| Bed length | - | 16'2" / 4930mm |
| Bed width | - | 6'6" / 1940mm |
Sources: Ifor Williams HB510XL, 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 HB510XL if...
For owners of taller or longer horses who find the standard HB511 too tight, giving extra internal length on the same 3500kg chassis so it stays towable by a suitably rated 4x4.
Listed by
- Horse Trailer Sales - Robertsbridge, Staplecross
Buy or hire the U-Tilt Flatbed (16'2" x 6'6") if...
- you want one that is 290kg lighter empty
- you want one that carries 290kg more
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 HB510XL and the Indespension U-Tilt Flatbed (16'2" x 6'6")?
The Indespension U-Tilt Flatbed (16'2" x 6'6") is 290kg lighter empty and carries 290kg more. The Ifor Williams HB510XL is a an extra-length double horsebox trailer; 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 HB510XL or the Indespension U-Tilt Flatbed (16'2" x 6'6")?
The Indespension U-Tilt Flatbed (16'2" x 6'6"). It is 290kg lighter empty than the Ifor Williams HB510XL.
Which carries more, the Ifor Williams HB510XL or the Indespension U-Tilt Flatbed (16'2" x 6'6")?
The Indespension U-Tilt Flatbed (16'2" x 6'6"), by 290kg.
Can I tow the Ifor Williams HB510XL 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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