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3500kg Heavy Duty Car Trailer Plans


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Product Details

3500kg Heavy Duty Car Trailer Plans - 14'x6' - 28 Pages

  • Tray Size: 14'x6' (4350mm x 1850mm)
  • Tray Height: approx. 500mm from ground level
  • Overall Size (inc coupling):  6350mm x 2480mm
  • GTM (Total mass of trailer + full load): 3500kg
  • Tare weight: approx. 725kg
  • Suspension: Tandem leaf springs with brakes
  • Total Pages: 28 PDF drawings (dimensions in mm)
  • DXF files: 15 DXF files

When you want the freedom to transport anything from a small sedan, through to a 4WD or even heavy machinery, you'll want this 3500kg model.

We know that you don't want to have to worry about which trailer you need to take along for each job, so with this heavy duty version you'll have one that's up to any size task you throw at it. Plus, by following our extremely thorough blueprints, you'll have the satisfaction of using your self-built kit that'll last a lifetime, while saving money over buying pre-made.


We've heard your complaints about other trailers, so we've designed ours to avoid them. First is our extra low side railings, allowing easy access to the vehicle doors when on the trailer. Another common grumble is around cars with low clearance, so you can set the trailer up with a minimal bed height of 350mm to enable loading without scraping.


The trailer design includes all the extra details that you would expect to see from top of the range manufacturers. From tie-down rails to the high capacity winch mount, we've reviewed all the aspects that truly make a trailer hassle-free to use. Combine this with our tips and guides you'll be able to follow the plans accurately and confidently, regardless of your skill level.

A fully itemised bill of materials (BoM) and a detailed cutting list are included for ordering the steel and trailer parts (suspension, lights, brakes). You will also receive .dxf files, giving you the option to CNC laser cut any of the brackets/mounts plus accessories.

Once you've completed your trailer, you can feel safe knowing these plans comply with all road and safety standards in Australia and New Zealand. This means licensing and registering your trailer will be quick and easy.

Expected build times and costs vary depending on your experience level and local material price, but as a ballpark...
(For more details, see the FAQ below)

Fabrication skill level - Basic
Build time - a couple of weekends
Steel cost - approximately $625 AUD
Equivalent cost pre-made - $6,000 to $10,000
An approximate indication of required components shown below, Prices and specs will vary based on supplier.
3500kg car trailer suggest parts list

  • FAQ

  • DXF Files