Head to head
Equi-Trek Sonic Five Seats 3,500kg vs PRG Trailers ProLine Beavertail
The Equi-Trek Sonic Five Seats 3,500kg is rated 500kg heavier gross.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Equi-Trek Sonic Five Seats 3,500kg is rated 500kg heavier gross.
Specifications side by side
| Equi-Trek Sonic Five Seats 3,500kg | PRG Trailers ProLine Beavertail | |
|---|---|---|
| Gross weight | 3500kg | 3,000kg (twin axle, 10in wheels) up to 3,500kg (twin axle 13in wheels, and all tri axle models) |
| Unladen weight | 2500kg | - |
| Payload | - | 1,975kg to 2,550kg depending on configuration |
| Internal bed | - | 4.88m to 6.40m long, 2.13m or 2.28m wide |
| Axles | - | Twin or Tri |
| Brakes | - | Braked (Alko AAA self-adjusting brakes) |
Sources: Equi-Trek Sonic Five Seats 3,500kg, PRG Trailers ProLine Beavertail. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Sonic Five Seats 3,500kg if...
- you want one that is rated 500kg heavier gross
A five-seat cab variant of the Sonic, aimed at families or small teams who want to travel together to competitions rather than sending a second car. It carries the same horse capacity as the standard Sonic.
Listed by
- Trek-Trailers Lincolnshire - Doncaster, Belton
- Trek-Trailers Three Counties - Hereford
Buy or hire the ProLine Beavertail if...
The ProLine Beavertail suits owners of low-ground-clearance cars, since its beavertail ramp lets a car drive on and off without grounding, unlike a flat-bed transporter. PRG offers it across twin and tri-axle chassis so buyers can match the trailer to a 3000kg or 3500kg tow limit.
Listed by
- Compass Trailers - Lewes, Ringmer
Common questions
What is the difference between the Equi-Trek Sonic Five Seats 3,500kg and the PRG Trailers ProLine Beavertail?
The Equi-Trek Sonic Five Seats 3,500kg is rated 500kg heavier gross. The Equi-Trek Sonic Five Seats 3,500kg is a 5-seat version of the Sonic motorised horsebox; the PRG Trailers ProLine Beavertail is a pRG Trailers' open beavertail car trailer range, built with a hinged tail ramp for loading low cars..
Can I tow the Equi-Trek Sonic Five Seats 3,500kg or the PRG Trailers ProLine Beavertail 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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