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Head to head

Ifor Williams LM166 vs Stewart GX16-21 L

The Ifor Williams LM166 is 4,705kg lighter empty.

Last reviewed 13 September 2026

Ifor Williams LM166
Ifor Williams LM166 - image: blains.co.uk
Stewart GX16-21 L
Stewart GX16-21 L - image: Rising Sun Trailer Hire

Key differences

Specifications side by side

Ifor Williams LM166Stewart GX16-21 L
Unladen weight795kg5,500kg
Gross weight3500kg-
Payload2705kg-
Internal bed4.77m x 1.98m-
Carrying capacity-16,000kg
Cubic capacity-grain 21m3, silage 37m3
Body-6700 x 2450 x 1370mm

Sources: Ifor Williams LM166, Stewart GX16-21 L. Figures vary by model year and options, so check with the supplier before you commit.

Buy or hire the LM166 if...

  • you want one that is 4,705kg lighter empty

Bought by contractors and hauliers who regularly carry longer loads, such as fencing materials or several pallets, and need more deck length than the LM106 or LM126 provide.

Listed by

Full LM166 specifications →

Buy or hire the GX16-21 L if...

A large bulk trailer used to cart grain and root crops at harvest, with an easy sheet system to cover the load without climbing on top. Farmers hire extra units like this at harvest to move crop faster than their own trailers allow.

Listed by

Full GX16-21 L specifications →

Common questions

What is the difference between the Ifor Williams LM166 and the Stewart GX16-21 L?

The Ifor Williams LM166 is 4,705kg lighter empty. The Ifor Williams LM166 is a a long-bed flatbed trailer; the Stewart GX16-21 L is a bulk agricultural trailer with easy sheet cover.

Which is lighter, the Ifor Williams LM166 or the Stewart GX16-21 L?

The Ifor Williams LM166. It is 4,705kg lighter empty than the Stewart GX16-21 L.

GetBrent is an independent directory and is not a dealer for, nor affiliated with, either manufacturer. Model and brand names are the trademarks of their owners.