RV Towed – Your Ultimate Guide To Safe & Smart Dinghy Towing

ByEric James Updated on

Ever dreamed of exploring those hidden trails, charming small towns, or remote campsites that your big RV just can’t reach? Many outdoor adventurers agree: having a secondary vehicle, often called a “dinghy” or “toad,” allows for incredible freedom once you’ve set up camp. But the thought of towing another vehicle can feel daunting, especially for those new to the RV lifestyle.

You’re not alone if you’ve wondered about the best way to bring your car along. The good news is that with the right knowledge and setup, RV towed travel can be a seamless and safe extension of your adventures. It opens up a world of possibilities, letting you truly immerse yourself in your chosen destinations.

This comprehensive guide will walk you through everything you need to know about safely and effectively towing a vehicle behind your RV. We’ll cover the different methods, essential gear, crucial safety practices, and even how to troubleshoot common issues. By the end, you’ll be ready to hit the road with confidence, knowing your RV and towed vehicle are perfectly prepared for whatever exploration awaits.

Understanding RV Towed Vehicles: What is Flat Towing?

When we talk about an RV towed vehicle, we’re primarily referring to “flat towing,” also known as “dinghy towing” or “four-down towing.” This method involves attaching your car directly to the back of your RV with all four of its wheels on the ground. It’s a popular choice for its convenience and ease once set up.

Flat towing differs from other methods like using a tow dolly (where the front two wheels of the towed vehicle are on the dolly, and the rear two are on the ground) or a car hauler trailer (where the entire vehicle is loaded onto a trailer). While those methods have their place, flat towing is often preferred by RVers for its simplicity.

The main benefit of flat towing is that you don’t have to deal with loading and unloading a trailer or dolly. Your dinghy is always ready to disconnect and go. This makes it incredibly convenient for day trips, grocery runs, or exploring tight spots where your RV simply won’t fit.

Is Your Vehicle Flat-Towable?

Not every vehicle can be flat-towed. This is perhaps the most critical piece of information you need to know. Flat towing can cause severe damage to a vehicle’s transmission or drivetrain if it’s not designed for it.

  • Consult your owner’s manual: This is your bible. Look for a section on “Recreational Towing” or “Flat Towing.” It will explicitly state whether your vehicle can be flat-towed and, if so, what specific procedures you must follow (e.g., putting the transmission in neutral, pulling fuses, speed limits).
  • Check online resources: Many RV forums and websites maintain lists of popular flat-towable vehicles. However, always cross-reference with your specific vehicle’s manual.

Commonly flat-towable vehicles often include certain models of Jeeps (like the Jeep Wrangler, a perennial favorite), some older manual transmission cars, and specific SUVs. Always verify before you make any towing decisions.

How to RV Towed: Essential Gear and Setup

Setting up your RV towed system requires several key components to ensure safety and compliance. Think of it as building a reliable bridge between your RV and your dinghy.

The Core Components of Your Tow System

You’ll need more than just a rope to connect your car to your RV. Here are the crucial pieces of equipment:

  • Tow Bar: This is the primary connection between your RV and your towed vehicle.

    • Choose a tow bar with a weight rating that exceeds the gross weight of your dinghy.
    • Look for models that are easy to connect and disconnect. Many modern tow bars are self-aligning and fold up for storage.
    • Brands like Blue Ox, Roadmaster, and Demco are popular for their reliability.
  • Base Plate: This is a custom-designed bracket that bolts onto the frame of your towed vehicle.

    • It provides the attachment points for the tow bar.
    • A base plate is specific to the make, model, and year of your dinghy. Ensure you get the correct one.
  • Safety Cables: These are a non-negotiable backup.

    • Two separate safety cables connect the RV chassis to the towed vehicle’s chassis.
    • They act as a fail-safe if the tow bar ever detaches. Always cross them underneath the tow bar to create a cradle in case of separation.
  • Lighting System: Your towed vehicle’s lights must mirror your RV’s signals.

    • This can be achieved with a dedicated wiring harness that taps into your RV’s electrical system and powers your dinghy’s tail, brake, and turn signals.
    • Alternatively, magnetic tow lights can be temporarily attached, though a wired system is generally more reliable.
  • Breakaway System: An essential safety feature, often legally required.

    • This system automatically applies the brakes on your towed vehicle if it ever separates from the RV.
    • It uses a small battery and a cable that pulls a switch if the connection breaks.
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Guide to Flat Towing a Jeep Wrangler

The Jeep Wrangler is one of the most popular vehicles for flat towing due to its robust design and off-road capabilities. Here’s a quick guide for Wranglers, though always consult your specific model’s owner’s manual:

  1. Install a Base Plate: Get a quality base plate designed for your Wrangler model.
  2. Connect the Tow Bar: Attach the tow bar securely to the base plate and the RV hitch.
  3. Safety Cables: Connect and cross the safety cables.
  4. Lighting: Install a proper wiring harness for your Wrangler’s lights.
  5. Supplemental Braking: Install a supplemental braking system (discussed next).
  6. Prepare the Jeep:
    • Shift the transfer case into Neutral (N).
    • Shift the transmission into Park (P) for automatic or 1st gear for manual.
    • Turn the ignition to the ACC/OFF position to unlock the steering, but ensure it’s not fully “ON” to avoid battery drain. Some models require a fuse pull.
    • Release the parking brake.
  7. Test: Do a slow test pull and check all lights.

How Does a Flat Towing Supplemental Braking System Work?

A supplemental braking system for your RV towed vehicle is not just a good idea; it’s a critical safety component and often a legal requirement. When you’re towing a several-thousand-pound vehicle behind your RV, your RV’s brakes alone are simply not designed to handle that extra weight.

Why Supplemental Brakes are Crucial

  • Safety: They significantly reduce your stopping distance, preventing potential accidents. Imagine an emergency stop without them – your RV would struggle, and the dinghy could push it forward.
  • Legal Compliance: Many states and provinces have laws requiring supplemental brakes for towed vehicles over a certain weight (often 1,500-3,000 lbs). Always check the laws for your planned travel routes.
  • Reduced Wear and Tear: By assisting with braking, they reduce the strain on your RV’s braking system, prolonging its life and preventing overheating.

Types of Supplemental Braking Systems

There are several types of systems, each with its own mechanism:

  • Proportional Systems: These are generally considered the best.

    • They apply the towed vehicle’s brakes proportionally to how hard the RV’s brakes are applied.
    • This provides smooth, controlled stopping power, minimizing jerking and wear.
    • Examples include systems that use an inertia sensor or connect to the RV’s air or hydraulic brake lines.
  • Non-Proportional (On/Off) Systems:

    • These systems apply the towed vehicle’s brakes with a fixed amount of pressure whenever the RV’s brake lights activate.
    • While effective, they can sometimes lead to more abrupt braking from the dinghy.
  • Portable vs. Permanent:

    • Portable systems are often vacuum-assisted or electric units that sit on the floor of the towed vehicle and press the brake pedal. They are easy to move between vehicles.
    • Permanent systems are installed directly into the towed vehicle’s brake lines or vacuum system and require a more involved installation.

Regardless of the type you choose, ensure it’s properly installed and regularly tested. A functional breakaway system is usually integrated or required in conjunction with your primary supplemental braking system.

RV Towed Best Practices for Safe Travel

Once your RV towed setup is complete, practicing smart habits on the road is key to a smooth and safe journey. Think of yourself as a pilot checking your pre-flight list.

Pre-Trip Checks: The Golden Rule

Before every departure, and especially after any stop, perform a thorough walk-around and checklist:

  • Tow Bar Connection: Ensure all pins are securely in place and clipped. Check for any loose bolts or signs of wear.
  • Safety Cables: Verify they are properly connected, crossed, and free from fraying or damage.
  • Lighting: Have a helper stand behind the towed vehicle while you test your RV’s turn signals, brake lights, and running lights. All should illuminate on the dinghy.
  • Tires: Check the tire pressure on both your RV and the towed vehicle. Inspect for any visible damage, bulges, or low tread.
  • Towed Vehicle Prep: Double-check that your dinghy is correctly prepared for towing (e.g., transmission in neutral, steering unlocked, parking brake off).
  • Breakaway Pin: Ensure the breakaway pin is securely inserted and the cable is not dragging or tangled.
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On the Road Driving Tips

Driving with an RV towed vehicle changes the dynamics of your rig. Adjust your driving style accordingly:

  • Increase Following Distance: Your combined length and weight mean significantly longer stopping distances. Give yourself ample room.
  • Wider Turns: The added length means you’ll need to make wider turns to prevent cutting corners or clipping obstacles with your towed vehicle. Practice in an empty parking lot if you’re new to it.
  • Monitor Your Mirrors: Regularly check your side mirrors to ensure your dinghy is still there and behaving as it should. Watch for any unusual swaying or movement.
  • Avoid Backing Up: Flat towing is generally not designed for backing up. The towed vehicle’s front wheels will try to turn, potentially jackknifing the setup and causing damage. If you must back up, disconnect your dinghy first.
  • Take Breaks: Stop every couple of hours to stretch your legs, check your connections, and ensure everything is still secure.

Did You Know There Are Flat Towing Laws?

Yes, there are! Just like with speed limits and trailer regulations, individual states and provinces have specific laws governing RV towed vehicles. Ignoring these can lead to fines, safety hazards, and insurance headaches.

  • Weight Limits: Some jurisdictions have maximum weight limits for towed vehicles or for the total combined weight of your RV and dinghy.
  • Braking Requirements: As mentioned, supplemental braking systems are often mandatory above a certain weight threshold (e.g., 1,500 lbs, 2,000 lbs, or 3,000 lbs, depending on the state).
  • Safety Chains/Cables: The requirement for safety cables is almost universal.
  • Lighting: Ensuring your towed vehicle’s lights are operational and visible is always a legal necessity.

Before embarking on a trip that crosses state or provincial lines, take a few minutes to research the specific towing laws for your route. Websites like AAA or state DMV sites often provide this information. It’s better to be informed than surprised.

Common Problems with RV Towed & Troubleshooting

Even with the best setup, sometimes issues can arise when your RV towed vehicle is along for the ride. Knowing common problems and how to troubleshoot them can save you stress and potential damage.

  • Electrical Issues (Lights Not Working):

    • Check connections: Ensure all wiring harness plugs are fully seated and free of corrosion.
    • Inspect fuses: Check the fuses on both your RV and your towed vehicle for the lighting circuits.
    • Grounding issues: A poor ground connection can cause intermittent light problems.
  • Brake Issues (Overheating, Improper Activation):

    • Adjust sensitivity: If your supplemental brake system is too aggressive or not aggressive enough, adjust its sensitivity settings according to the manufacturer’s instructions.
    • Check for binding: Ensure the towed vehicle’s parking brake is fully released.
    • Verify breakaway cable: Make sure the breakaway cable isn’t partially pulled, which could activate the brakes.
  • Transmission Damage in Towed Vehicle:

    • This is usually due to improper preparation. Always re-read your owner’s manual.
    • Confirm the transmission is in neutral (if required) and the transfer case (if applicable) is in its correct towing position.
    • Some vehicles require stopping every few hours to run the engine and circulate transmission fluid.
  • Sway or Instability:

    • Proper weight distribution: While less common with flat towing, ensure your RV isn’t overloaded, especially in the rear.
    • Tire pressure: Incorrect tire pressure on either vehicle can contribute to sway.
    • Tow bar condition: A worn or damaged tow bar can introduce play and instability.

For any significant mechanical issue, especially with brakes or transmission, pull over safely and consult a professional. Don’t risk further damage or a dangerous situation.

Sustainable RV Towed Practices & Care Guide

Living outdoors smarter also means being mindful of our impact. Incorporating sustainable practices into your RV towed adventures and maintaining your gear properly ensures longevity and eco-friendliness.

Minimizing Environmental Impact

  • Maintain Both Vehicles: Properly inflated tires and well-tuned engines on both your RV and towed vehicle improve fuel efficiency, reducing emissions.
  • Drive Mindfully: Avoid aggressive acceleration and braking. Smooth driving saves fuel for both vehicles.
  • Reduce Weight: Don’t carry unnecessary gear in either vehicle. Lighter loads mean less fuel consumption.
  • Eco-Friendly Cleaning: Use biodegradable soaps and cleaning products for washing your RV and dinghy.
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RV Towed Care Guide: Longevity of Your System

Regular inspection and maintenance of your towing equipment will ensure its reliability and extend its lifespan:

  • Lubrication: Apply grease to moving parts of your tow bar (pivot points, hitch receiver) as recommended by the manufacturer. This prevents rust and ensures smooth operation.
  • Inspect Components:

    • Tow Bar: Look for cracks, bends, or excessive play.
    • Base Plate: Check bolts for tightness and the plate for any signs of fatigue.
    • Safety Cables: Inspect for fraying, corrosion, or kinks. Replace them if damaged.
    • Wiring: Look for cracked insulation, loose connections, or corrosion on electrical plugs.
    • Brake System: Test regularly and check for fluid leaks (if hydraulic) or proper air pressure (if air-activated).
  • Storage: When not in use, store your tow bar in a clean, dry place. If it stays on the RV, keep it clean and protected from the elements.
  • Winterization: If you store your RV and dinghy for winter, ensure all systems are properly prepared according to their respective manuals, especially any hydraulic braking components.

A little preventative maintenance goes a long way in preventing costly repairs and ensuring your safety on the road. Treat your towing system with the same care you give your RV.

Frequently Asked Questions About RV Towed Vehicles

Can I flat tow any car?

No, definitely not. Only vehicles specifically designed by the manufacturer to be flat-towed should be. Always consult your vehicle’s owner’s manual under “Recreational Towing” or “Flat Towing” to confirm. Towing an unsuitable vehicle can cause severe and costly transmission or drivetrain damage.

Do I need supplemental brakes for my RV towed vehicle?

In most cases, yes. Many states and provinces legally require supplemental braking systems for towed vehicles over a certain weight (often 1,500-3,000 lbs). Beyond legal requirements, they are a crucial safety feature that significantly reduces your stopping distance and protects your RV’s brakes.

How do I back up with a dinghy towed?

It is generally not recommended to back up with a flat-towed vehicle. The steering of the dinghy is typically unlocked, meaning its front wheels will turn unpredictably, leading to jackknifing and potential damage to the tow bar, base plate, or both vehicles. If you need to back up, it’s best to disconnect your towed vehicle first.

How often should I check my tow setup?

You should perform a thorough visual inspection of your entire tow setup (tow bar, base plate, safety cables, lights, towed vehicle prep) before every departure. Additionally, stop every 2-3 hours during travel to do a quick walk-around and re-check all connections and the towed vehicle’s status.

What’s the difference between flat towing and dolly towing?

Flat towing (or four-down towing) means all four wheels of the towed vehicle are on the ground, connected directly to the RV via a tow bar. Dolly towing involves using a two-wheel trailer (a tow dolly) where the front two wheels of the towed vehicle rest on the dolly, and the rear two wheels remain on the ground. Tow dolly is often used for front-wheel-drive vehicles that cannot be flat-towed.

Embracing the world of RV towed travel truly unlocks a new level of freedom and exploration. By understanding the essential gear, adhering to safety best practices, and performing regular maintenance, you ensure that your adventures are not only exciting but also secure and sustainable.

Remember, preparation is your best friend on the road. Take the time to set up your system correctly, practice safe driving habits, and always be mindful of your surroundings. This diligence will allow you to confidently explore every corner of your destination, leaving the big RV behind to enjoy the small roads and hidden gems.

Gear up, stay informed, and embark on your next journey with the peace of mind that comes from being prepared. Happy trails, and may your adventures be limitless!

Eric James
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