6’10” x 18.5′ – 12,000 Lbs – Car Hauler / Equipment Trailer Plans

6’10” x 18.5′ – 12,000 Lbs – Car Hauler / Equipment Trailer Plans

For hauling cars or equipment, the key is always full strength, so this trailer is a Heavy Duty I-Beam design with a Low Fixed Deck.  12,000 lbs Capacity and 18.5′ length.  This car trailer will do the job.

Free Digital Delivery — Right Now*

$ 39.99 - Complete Plans

* Plans are in a computer document. You may Save them to your computer immediately after Payment.



Equipment transport and Car trailers have a unique job to carry heavy payloads with a few points of contact on the trailer.  Also, most things load onto the back.  That means it needs high strength without compromise.  This 12,000 lbs trailer has an I-Beam design to give great strength while keeping the deck height low.

Drive a truck on it, or put a tractor on it.  These are NOT cookie cutter trailer trailer plans.  They are a complete design from the ground up, with full engineering to make sure the trailer will perform when you need it.  Build your car trailer from these plans with confidence.

Engineering Analysis not Guessing
Full Engineering Analysis is the way to assure proper trailer strength.  The image above is one example of the analysis we do with all our trailer designs.

This is a Fixed Deck design, with slide out ramps, removable fenders, and a ton of other options.  While some options are in the images above, there are many not visible.  Because Car Trailers have some many different needs, just one trailer plan won’t do it all.  However, if a 18.5′ long, fixed deck, 12,000 lbs capacity Car Trailer / Equipment Transport meets your need, these plans will definitely help build a solid one.

A trailer from these plans will carry your car, or truck, or tractor, or side-by-side, or equipment, and more.  Plans include the base Car Trailer / Equipment Trailer, then many options so you can build the perfect trailer for your unique needs.  That’s the way we do it.  Read more in this intro article.

Fixed Deck Car Trailer Plans

12,000 lbs Total Capacity with tandem 6000 lb axles, under an 18.5′ full width deck.  Strength is in the I-Beam construction, which is stronger than C-Channel of similar size.  It makes this trailer perform better for the long term, and the long haul.  18.5′ is a perfect length for many uses.  Read more in the accordions below.

Add To Cart

We also have a 20′ length, 10,400 lbs capacity version of these trailer plans if that will work better.



6’10” x 18.5′ – 12,000 lbs – Equipment Transport / Car Trailer Plans

  • Tandem axles with leaf springs — use double eye or slipper style.
  • 6’10” x 18.5′ nominal deck size.  (Actual size is a little longer.)  Width at the fenders is 102 inches.
  • I-Beam construction is compact, yet very strong.
  • The Instructions Document (included in the plans) explains how to shorten the length (if you want) from 18.5′ to 18′ or 17′ as an option.
  • Several Deck styles are included.  Choose a solid Plywood deck, a plank surface, or a split deck — all in Wood or Metal.
  • Frame construction is welded steel — I-Beam, Angle and C-Channel primarily.
  • Crossmembers are 3″ C-Channel.
  • Fenders are Removable (primary design), or weld them on, or bolt them down solid if that works better for you.
  • Steel Ramps are also in the design.  Choose to make them slide in and store under the trailer, or make them longer to store in another location.
  • Ramps have many variations to choose for Length, Width, Capacity, and Material.  We give you the engineering, then you choose the size and strength you want.
  • Many options are given for tie-down anchor points.  Use one style or several to meet your needs.
  • Plans include options for a front rail, either short or tall, with options for various material.
  • A winch option is also in the plans.  Make it fixed, or to remove with a pin.
  • Choose a tongue mount toolbox, or a tongue tray, or not.
  • There are options for the tongue jack, as well as options for rear supports.
  • Save the plans to your computer right after payment.  It takes only a few minutes.
  • When you save the plans, it includes a full set of Drawings (40 pages) plus the Instructions Document (20 pages).  It has a materials list that includes both raw materials and components to purchase.  It also has options, explanations, Engineering Considerations, and illustrated instructions.

Add To Cart

More About The Design Features

More About The Design Features

As a multi-purpose trailer, this one has a lot of features to handle many of your hauling needs.  12K makes it beefy enough to carry a lot of equipment — like skid loaders, tractors, mini-excavators, and lifts.  While it’s more than needed, it will certainly do a great job of hauling a car, a Jeep, your truck, or other vehicle.

So, what are your needs?  Various needs require different configurations, which is why we give so many options.  Whether you’re hauling Cars, or Equipment, there are always ways to make the job easier.

These plans start with a solid base, then we recommend building to make it the trailer you want.  Use options in the plans as a start, then add your own flavor so it fits your needs.

Equipment Transport Trailer

Equipment Transport / Car Hauler Trailer Plans

  • * A car trailer from these plans has a bed width of 6′ 10′ and bed length of 18′ 7″.
  • Overall length including the tongue is just over 23.5 feet.
  • While bed height depends on various choices, it will usually range from 21″ up. (Height shown is ~21.8″ using drop axles.)
  • Max capacity is 12,000 lbs  —  (combined axle rating)* which includes both the trailer and the payload.
  • Trailer weight depends on many design choices.  The 12K base trailer is ~1500+ lbs without the deck.  Tie-Down options, Decking choices, Toolbox, Winch, Battery, Ramps, Jack Styles, etc. all add to the weight.
  • These car trailer plans include many options.  Things like Decking material and style, Tie-down places, Ramps (with options for length and for strength), a tongue mounted toolbox, a winch, jacks, removable fenders, front rail, and more. They are all choices to give your desired functionality.  Some options are mutually exclusive.  Not all options are in the pictures on this page.
  • The plans are ready for you to save, right after payment.  Just click the link, then save it to your computer.  You can get started today.
  • Download is a .ZIP file which contains the full drawing package as well as the materials and instructions document.

Add To Cart

We wish you the best of luck with your project.

Maximizing Your Project

Plans from Mechanical Elements are an awesome start to a great project.  Here are even more resources!


Maximizing Your Project

Reviews (0)


There are no reviews yet.

Be the first to review “6’10” x 18.5′ – 12,000 Lbs – Car Hauler / Equipment Trailer Plans”

Good planning is the beginning of a successful project.
Great Plans Are Available Here!

We Found These For You . . .

6' 10" width, 12' Length Trailer Plans

Make your new trailer full width starting with a 6' 10" wide deck.  These blueprints are 12' length and 3500# capacity for a very functional utility trailer.  Choose from the many options to build it like you want it.

Aluminum Trailer Frame Underside
Aluminum is such a great material.  It’s light, strong, and looks sweet to boot.  So, why is there a debate about Aluminum Trailer Frames comparing to others like steel?  Or comparing for beams like with gantry cranes?

Read The Article

6x8 Trailer Plans - 3500 lbs

A very popular utility trailer size.  These plans include many options for making the trailer work just like you want.  3500 lbs is a great utilitarian capacity that will serve for numerous possibilities.

Solution! for Air Tools
A simple Solutions! reader submission for easy access and organization of his common Air Tools.  Simple enough to build in an hour, and great enough to keep  . . .  forever.  Try this.

Read The Article

Gantry Crane Lift Feature
The beauty of a gantry crane is the beam overhead, and the clear access for lifting things.  To make them more useful, telescoping legs put the top beam at a height appropriate for the job — in your garage, or…

Read The Article

All Thread or Threaded Rod
You can use threaded rod (often called All-Thread) for a million things.  Make a long bolt, or just the right size fastener.  It’s also good for special brackets if you weld to it.  And, if you’re not careful, you can…

Read The Article

20' Deck-Over Trailer

This is our longest 7000 lbs tandem axle deck-over trailer.  These plans are fully engineered and include so many options, because you expect more from plans at Mechanical Elements.

8.5' x 16' 7000 lbs Deck Over Trailer Plans

With a full flat deck, these plans show how to build a workhorse of a deck-over trailer.  Options are plentiful, including ramp sizes, deck types, sides options, rub rails, front rise rail and more.

Is It Strong Enough?
I’m not sure how to categorize this Article.  It’s an answer, but more than that.  We get questions once in a while something like “My trailer is X long and I want to haul a Y.  Is 3 inch angle…

Read The Article

Wider 12 x 32 Tiny House Trailer Plans

For a little more interior room, our widest Tiny House Trailer plans also include full engineering as a mobile foundation.  Low 12’ x 30’ or 32’ top deck.  Up to 18,000 lbs total capacity.