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Head to head

Brian James A Transporter (A4) vs Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED)

The Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED) is rated 1.5 tonnes heavier gross.

Last reviewed 13 September 2026

Brian James A Transporter (A4)
Brian James A Transporter (A4) - image: Fieldfare Trailer Centre
Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED)
Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED) - image: Indespension

Key differences

Specifications side by side

Brian James A Transporter (A4)Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED)
Gross weight2,000kg to 3,000kg depending on variant3500kg
Bed3.7m x 1.8m up to 5.0m x 2.0m depending on variant-
BrakesBraked, tandem axle-
Unladen weight-815kg
Payload-2685kg
Internal size-3.65 x 1.83
Bed height-430mm

Sources: Brian James A Transporter (A4), Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED). Figures vary by model year and options, so check with the supplier before you commit.

Buy or hire the A Transporter (A4) if...

One of the most common car trailers in Britain, bought by trade and private owners for moving road cars, project cars and small vans. The reason it sells is the spread of bed length and gross weight combinations, which lets you match the trailer to the tow car rather than the other way round.

Full A Transporter (A4) specifications →

Buy or hire the Challenger 50 Beavertail 12 x 6 (AD35126BTSLED) if...

  • you want one that is rated 1.5 tonnes heavier gross

The larger Challenger 50 beavertail for bigger mini excavators and compact plant. Used by groundworks firms and hire fleets that need extra bed length.

Full Challenger 50 Beavertail 12 x 6 (AD35126BTSLED) specifications →

Common questions

What is the difference between the Brian James A Transporter (A4) and the Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED)?

The Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED) is rated 1.5 tonnes heavier gross. The Brian James A Transporter (A4) is a open flatbed car transporter, twin axle; the Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED) is a 12 ft x 6 ft 3.5 tonne beavertail plant trailer.

Can I tow the Brian James A Transporter (A4) or the Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED) 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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