8’6″ x 18.5′ – 12,000 Lbs – Drive-Over Fenders – Trailer Plans

With a Heavy Duty I-Beam design and a Low Fixed Deck, these Car Hauler Trailer Plans include Drive-Over Fenders for wide stance vehicles.  12,000 lbs (or 10,400 lbs), 18.5′ long, 8.5′ wide, and many Options.

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Car Hauler trailer plans with Drive-Over Fenders.  While this trailer is similar in length, strength, and capacity to our other 12K Car Hauler, the increased width and drive-over feature make it quite different.  Yes, it is wider, 8.5′, with permanent, strong fenders so wide stance vehicles can drive up and over them.

Like the other, this 12,000 lbs trailer includes a robust I-Beam design for great strength while keeping the deck height low.  The 10,400 lbs option (with smaller tires) will reduce deck height even more.

Drive-Over Fender Trailer Plans

This one is for wide stance vehicles like built jeeps, 4×4’s, dually trucks, wide tractors, and more.  These drive-over trailer trailer plans are a complete design, with full engineering so the trailer performs.  The fenders are partly from sheet steel cut with tabs and slots so everything aligns for strength and ease.  Plans include all the CNC files, with instructions, to build with confidence.  Just send the files to a vendor, then go pick up the parts.  It is an easy way to build both strong and accurate.

Sheet Cut Drive-Over Trailer Plans
Example of Sheet Cut Parts for the Drive-Over Fenders in these Trailer Plans.  Plans come with all the necessary files and instructions.

A trailer from these plans will carry your car, truck, tractor, Jeep, side-by-side, or equipment, and more.    Read more in this article about Car Haulers with Drive Over Fenders.


Car Trailers have so many different needs, so one simple trailer plan won’t do it all.  These plans include the Car Hauler / Equipment Trailer as well as many options so you can build it to meet your needs.

Options include slide out ramps, deck choices, a removable winch, and various tie points.  While some are in the images, many are not as visible.  Choose 12,000 lb capacity or 10,400 lb based on Dexter Axle products.  Read more in the specifications tab below.

If you need a  fixed deck, Car / Equipment Transport Trailer with Drive-Over Fenders, these plans are a solid place to start.  It’s 18.5′ long, up to 12,000 lbs capacity, with tandem axles.  Strength is in the I-Beams, which are stronger than C-Channel of similar size, so this trailer will perform better for the long term, and the long haul.

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8’6″ x 18.5′ – 12,000 lbs – Equipment Transport / Car Trailer Plans

  • Option for 12,000 lb. Capacity, or 10,400 lb. Capacity.
  • 8’6″ x 18.5′ nominal deck size.  (Actual size is a little longer.)  Width includes the drive-over fenders.
  • Deck Style OptionsSeveral Deck styles are included as options.  (See the image.) Choose a solid Plywood deck, a plank surface, or a split deck — all in Wood or build a Full Metal Deck — all with drive-over fenders.
  • Tandem axles with leaf springs — use double eye or slipper style.
  • I-Beam construction is compact, for a low deck height, yet even stronger than C-Channel.
  • Drive-Over Fenders in the trailer plans are made strong and easy to build with a technique of tabs and slots.
  • Instructions in the plans explain how get the parts made quick and accurate.  CAD files to get the parts made are all included.
  • Frame construction is welded steel — I-Beam, Angle and C-Channel primarily.
  • Crossmembers are 3″ C-Channel.
  • 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.
  • For the Ramps we give you the engineering so you can choose the Length, Width, and Capacity 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 material.
  • A winch option is also in the plans.  Make it fixed, or removable 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.
  • Plans include a full set of Drawings (45 pages) plus the Instructions Document (21 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.

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More About The Design Features

More About The Design Features

The Drive-Over fenders in these trailer plans are one focus, but it’s also a great multi-purpose trailer.  Use the 12K capacity to haul equipment — like skid loaders, tractors, mini-excavators, and lifts.  Or use the Drive-Over fenders to take your built 4×4 or dually truck.  Afterall, that’s what it is build for.

These plans start with the same solid I-Beam base frame as our other 12K Car Hauler.  Also, most of the same trailer options to make it the way you want.  Use options in the plans, or add your own, so it fits your needs.

Equipment Transport Trailer

Equipment / Car Hauler Drive-Over Fender Trailer Plans

  • * A car trailer from these plans has a bed width of 8′ 6′ and bed length of 18′ 7″.
  • Overall length including the tongue is around 24 feet.
  • While bed height depends on various choices:  Around 23″ for the 12,000 lb. option, or 21″ for the 10,400 lb. option.  Other things will also affect this height.
  • 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 ~2600+ 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, and the CAD files for the fender parts.

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We wish you the best of luck with your project.

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