Tow Vehicle Behind RV – Your Complete Guide To Flat Towing, Dolly

ByEric James Updated on

There’s nothing quite like the freedom of an RV adventure, but sometimes you need more than just your rolling home. Navigating tight spots, exploring local towns, or making quick supply runs often calls for a smaller, more nimble ride. That’s where a tow vehicle behind RV becomes your ultimate travel companion.

Many RVers, from weekend warriors to full-time nomads, discover that bringing along a secondary vehicle, often called a “toad” (towed vehicle), significantly enhances their travel experience. It frees you from the hassle of packing up your entire RV every time you want to explore a local attraction or grab groceries.

This comprehensive guide will unravel the complexities of towing a vehicle behind your RV, ensuring you hit the road with confidence, safety, and all the creature comforts of home, plus your trusty sidekick. We’ll cover everything from choosing the right setup and understanding legal requirements to mastering towing techniques and maintaining your gear for countless miles of exploration.

Why Tow a Vehicle Behind Your RV? The Benefits for Every Adventurer

Deciding to tow a vehicle behind RV isn’t just about convenience; it opens up a world of possibilities for more flexible and enriching outdoor experiences. For many, it transforms a basic RV trip into a true adventure with limitless local exploration.

Enhanced Freedom and Flexibility

Imagine parking your RV at a beautiful campsite, then unhitching your smaller vehicle to zip into town for supplies, explore a national park loop with restricted RV access, or simply drive to a trailhead for a hike. This flexibility is a primary reason why so many choose to tow.

  • Local Exploration: Easily visit small towns, attractions, and scenic routes inaccessible to larger RVs.
  • Convenience: Run errands, pick up groceries, or go out for dinner without breaking down your entire camp setup.
  • Emergency Preparedness: A separate vehicle can be invaluable for unexpected trips or emergencies, especially in remote areas.

Cost Savings and Practicality

While there’s an initial investment in towing equipment, it can lead to savings and greater practicality in the long run.

  • Fuel Efficiency (for local trips): Your toad is likely far more fuel-efficient than your RV for short excursions.
  • Reduced RV Wear: Less mileage on your RV means less wear and tear on its engine, transmission, and tires.
  • Access to Smaller Campsites: You can often find more affordable or desirable campsites that are too small for an RV to navigate once parked, knowing you have a separate vehicle to get around.

Choosing Your Tow Vehicle Behind RV Setup: Methods and Considerations

When it comes to how to tow vehicle behind RV, there are three primary methods, each with its own advantages and requirements. Understanding these options is crucial for making the right choice for your RV and toad.

1. Flat Towing (Four-Down Towing)

Flat towing, also known as four-down towing, means all four wheels of the towed vehicle are on the ground. This is often the preferred method for its simplicity once set up.

  • How it Works: A tow bar connects the front of your toad to the rear of your RV. The toad’s wheels roll freely.
  • Pros:
    • Easiest and quickest to hook up and unhook.
    • No need for a separate trailer or dolly for storage.
    • Less bulky than other methods.
  • Cons:
    • Not all vehicles can be flat towed; many require specific transmission types (manual or certain automatic transmissions) or modifications.
    • Requires a base plate, tow bar, safety cables, supplemental braking system, and often a wiring kit for lights.
    • Adds mileage to the toad’s odometer (though some vehicles have systems to prevent this).
  • Key Gear:
    • Base Plate: Custom-fitted bracket attached to the towed vehicle’s frame.
    • Tow Bar: Connects the base plate to the RV’s hitch receiver.
    • Safety Cables: Secondary connection between RV and toad, required by law.
    • Supplemental Braking System: Essential for safe stopping, often legally required.
    • Wiring Kit: Connects the RV’s lights to the toad’s lights for turn signals, brake lights, and running lights.

2. Dolly Towing (Two-Down Towing)

Dolly towing involves placing the front two wheels of your towed vehicle onto a specialized tow dolly, while the rear wheels remain on the ground.

  • How it Works: The front wheels rest securely on the dolly, which is then hitched to the RV.
  • Pros:
    • Most vehicles can be dolly towed, regardless of their transmission type.
    • Protects the towed vehicle’s drivetrain from wear and tear.
    • Generally less expensive than a full flat-tow setup for the toad.
  • Cons:
    • Requires storing and maneuvering the tow dolly when unhitched.
    • Can be more time-consuming to load and unload the vehicle.
    • May still require a supplemental braking system for the dolly itself or the toad.
    • Backing up with a dolly is extremely difficult and generally not recommended.
  • Key Gear:
    • Tow Dolly: A two-wheeled trailer with ramps and straps.
    • Straps and Chains: To secure the vehicle to the dolly.
    • Supplemental Braking System: For the dolly or the toad, depending on setup and state laws.
    • Lights: Most dollies come with their own lights, but ensure they are functional.
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3. Trailer Towing (Four-Up Towing)

Trailer towing means loading your entire vehicle onto a flatbed trailer, which is then hitched to your RV. This method keeps all four wheels of the toad off the ground.

  • How it Works: The vehicle drives onto a dedicated car hauler trailer.
  • Pros:
    • Any vehicle can be towed this way, including classic cars, all-wheel-drive vehicles, or those not suitable for flat towing.
    • Zero wear and tear on the towed vehicle’s drivetrain or tires.
    • Can also be used to transport other gear.
  • Cons:
    • Heaviest and longest setup, impacting RV fuel economy and maneuverability.
    • Requires storing and maneuvering a full trailer.
    • Most expensive option initially.
    • Loading and unloading can be more involved.
    • Backing up requires practice and care.
  • Key Gear:
    • Car Hauler Trailer: A flatbed trailer specifically designed for vehicles.
    • Tie-Down Straps: To secure the vehicle to the trailer.
    • Ramps: For loading the vehicle.
    • Supplemental Braking System: Typically integrated into the trailer.

Essential Considerations for Any Tow Setup

Before you commit to any method, always check your RV’s towing capacity and your vehicle’s towability. Overloading your RV is a significant safety hazard.

  • RV Towing Capacity: Consult your RV’s manual for its Gross Combined Weight Rating (GCWR), Gross Vehicle Weight Rating (GVWR), and hitch receiver capacity. Your towed vehicle’s weight, plus the dolly/trailer, must be within these limits.
  • Toad Towability: Check your towed vehicle’s owner’s manual. It will explicitly state if it can be flat towed, dolly towed, or only trailer towed, and any specific procedures required (e.g., disconnecting battery, putting transmission in neutral, specific speed limits).
  • Braking Systems: Most states require supplemental braking systems for towed vehicles over a certain weight. These systems apply the toad’s brakes in conjunction with the RV’s brakes, significantly improving stopping power and safety.
  • Lights and Wiring: Your towed vehicle’s brake lights, turn signals, and running lights must be connected and functional with your RV’s lighting system for visibility and legal compliance.

Pre-Trip Checklist & Best Practices for Towing a Vehicle Behind RV

Preparation is key to a smooth and safe journey when you’re traveling with a tow vehicle behind RV. A thorough pre-trip inspection and adherence to best practices will prevent common problems and ensure peace of mind.

The Essential Pre-Departure Checklist

Before every departure, take the time to go through these critical steps. It might seem like a lot, but it quickly becomes second nature.

  1. Verify Tow Bar Connection: Ensure the tow bar is securely pinned and locked to both the RV’s hitch receiver and the toad’s base plate. Double-check all pins and clips.
  2. Attach Safety Cables: Cross the safety cables underneath the tow bar to catch the toad if the primary connection fails. Attach them securely to both vehicles.
  3. Connect Electrical Wiring: Plug in the wiring harness for the toad’s lights. Test all lights (running lights, brake lights, turn signals) from the RV’s cab.
  4. Confirm Braking System: If using a supplemental braking system, ensure it’s properly connected and functioning. Test it according to its manufacturer’s instructions.
  5. Check Toad’s Preparation:
    • Follow your toad’s manual for flat towing procedures (e.g., transmission in neutral, parking brake off, steering unlocked, battery disconnect if required).
    • Ensure tires are properly inflated on both the RV and the toad.
    • Remove any loose items from inside the toad that could shift or become projectiles.
  6. Inspect Overall Setup: Walk around both vehicles. Look for anything loose, dragging, or out of place. Check mirrors for clear visibility.

Smart Driving Tips for a Tow Vehicle Behind RV

Driving with a towed vehicle changes the dynamics of your RV. Adjusting your driving habits is crucial for safety.

  • Wider Turns: Remember you’re significantly longer. Take turns much wider than usual to prevent the toad from clipping curbs or obstacles.
  • Increased Braking Distance: Even with a supplemental braking system, your combined weight is much higher. Allow substantially more space for braking, especially on downhills or in wet conditions.
  • Reduced Speed: Maintain a moderate speed, especially on winding roads or in heavy traffic. High speeds can increase sway and reduce reaction time.
  • Monitor Mirrors Frequently: Constantly check your side mirrors to ensure your toad is tracking properly and hasn’t developed any issues.
  • Avoid Backing Up: If you’re flat towing or dolly towing, backing up is extremely difficult and can damage your tow system or toad. Plan your routes and parking carefully to avoid situations that require reversing. If absolutely necessary, unhitch the toad first.
  • Pre-Plan Fuel Stops and Parking: Look for large, accessible gas stations and parking areas that can accommodate your combined length. Truck stops are often a good option.

Tackling Common Problems When You Tow a Vehicle Behind RV

Even with careful preparation, common problems with tow vehicle behind RV setups can arise. Knowing how to identify and address them can save you stress and keep your adventure on track.

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1. Excessive Sway or Instability

Sway can be unnerving and dangerous. It’s often caused by improper weight distribution, incorrect tire pressure, or strong crosswinds.

  • Solution:
    • Ensure your RV and toad tires are inflated to manufacturer specifications.
    • Check that your RV is not overloaded, especially in the rear.
    • Reduce speed, especially in windy conditions or when being passed by large trucks.
    • A properly adjusted supplemental braking system can sometimes help mitigate sway.

2. Electrical Issues (Lights Not Working)

No lights on your toad is a serious safety and legal issue. This is one of the most common complaints.

  • Solution:
    • Check all connections in the wiring harness between the RV and the toad. Ensure they are clean, tight, and free of corrosion.
    • Inspect fuses on both the RV and the toad’s wiring system.
    • If using magnetic lights, ensure they are securely attached and wired correctly.
    • If issues persist, consult an RV or automotive electrician.

3. Braking System Malfunctions

A non-functioning supplemental braking system compromises safety and may be illegal.

  • Solution:
    • Verify all electrical connections to the braking system.
    • Check for proper installation and calibration according to the manufacturer’s guide.
    • Ensure the toad’s battery (if the system draws power from it) is charged.
    • Some systems have diagnostic lights or remote indicators; learn what they mean.
    • If you suspect a failure, do not tow until it’s repaired.

4. Tow Bar or Base Plate Issues

Loose connections or damaged components can lead to catastrophic failure.

  • Solution:
    • Regularly inspect the tow bar for cracks, bends, or excessive wear.
    • Check the base plate connections to the toad’s frame for tightness and integrity.
    • Ensure all pins, clips, and safety chains are in good condition and correctly secured.
    • Any visible damage warrants immediate professional inspection and repair.

5. Toad Battery Drain

Some flat-towed vehicles can experience battery drain due to the constant connection to the RV’s power for lights or braking systems.

  • Solution:
    • Install a battery charge line from the RV to the toad, which trickles a charge to the toad’s battery while driving.
    • Consider a battery disconnect switch for the toad’s battery if recommended by the manufacturer.
    • Turn off all accessories in the toad before towing.

Maintaining Your Towing System: A Tow Vehicle Behind RV Care Guide

Proper maintenance is crucial for the longevity and safe operation of your tow vehicle behind RV setup. Regular checks and care will ensure your equipment performs reliably trip after trip.

Regular Inspection Schedule

Don’t wait for a problem to arise. Proactive inspections are your best defense against breakdowns.

  • Before Each Trip:
    • Visually inspect the entire tow system: tow bar, base plate, safety cables, electrical wiring, and supplemental braking system components.
    • Check for any signs of wear, corrosion, cracks, or loose fasteners.
    • Ensure all pivot points on the tow bar move freely.
  • Every 3,000-5,000 Miles or Annually:
    • Perform a more detailed inspection of all components.
    • Lubricate the tow bar’s moving parts as per the manufacturer’s instructions (often with grease or a dry lubricant).
    • Check the condition of the safety cables for fraying or damage. Replace if necessary.
    • Inspect the electrical wiring harness for cuts, abrasions, or exposed wires.
    • Have your supplemental braking system serviced or inspected by a qualified technician.

Caring for Your Tow Bar and Base Plate

These are the backbone of your flat towing setup and deserve special attention.

  • Cleaning: Keep the tow bar and base plate clean, especially after driving in salty or dusty conditions. Rinse off road grime.
  • Lubrication: Apply grease or dry lubricant to the tow bar arms and connections to ensure smooth operation and prevent corrosion.
  • Storage: When not in use, keep the tow bar covered or stored in a dry place to protect it from the elements.
  • Damage Check: Any impact or severe stress on the tow bar or base plate (e.g., hitting a curb with the toad while turning) should prompt a thorough inspection by a professional, as hidden damage can be catastrophic.

Electrical and Braking System Longevity

These systems are vital for safety and require ongoing care.

  • Wiring Harness: Keep the electrical connections clean and dry. Use dielectric grease on terminals to prevent corrosion. Store the harness properly to avoid kinks or damage.
  • Braking System: Follow the manufacturer’s maintenance schedule. This might include checking fluid levels (for hydraulic systems), battery health (for independent systems), or sensor calibration.
  • Toad Battery: If your toad’s battery is used to power the braking system, ensure it’s in good health and charged. Consider a smart charger if the vehicle sits for extended periods.

Sustainable Towing: Eco-Friendly Tow Vehicle Behind RV Options

As outdoor adventurers, we often seek to minimize our environmental footprint. Considering sustainable and eco-friendly tow vehicle behind RV options aligns perfectly with this ethos, allowing you to explore responsibly.

Choosing Fuel-Efficient Toads

The most straightforward way to tow more sustainably is to choose a toad that sips fuel, not guzzles it, for your local explorations.

  • Compact Cars: Smaller, lighter cars with efficient engines naturally consume less fuel.
  • Hybrids: Many hybrid vehicles offer excellent fuel economy and can often be flat-towed (always check the owner’s manual for specific models).
  • Manual Transmissions: Often more fuel-efficient and commonly flat-towable, though this is becoming less common.
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Consider Electric Vehicles (with caveats)

Electric vehicles (EVs) offer zero tailpipe emissions, making them an appealing eco-friendly option, but towing them presents unique challenges.

  • Flat Towing EVs: Currently, very few EVs are approved for flat towing due to their drivetrain designs. Most require being on a trailer.
  • Range Anxiety & Charging: Towing a heavy trailer (with an EV on it) will significantly reduce your RV’s fuel economy. Once unhitched, you’ll need to plan your EV’s charging carefully, especially in remote areas where charging infrastructure might be scarce.
  • Weight: EVs tend to be heavier than comparable gasoline cars due to their battery packs, which impacts the RV’s towing capacity and fuel consumption.
  • The Future: As EV technology evolves, we may see more flat-towable options or improved charging solutions for RVers.

Best Practices for Eco-Conscious Towing

Beyond the choice of vehicle, your towing habits can also make a difference.

  • Maintain Proper Tire Pressure: Ensures optimal fuel efficiency for both your RV and toad.
  • Reduce Speed: Driving at lower, consistent speeds significantly improves fuel economy for the entire rig.
  • Lighten Your Load: Only bring essential items. Every extra pound reduces fuel efficiency.
  • Regular Maintenance: Keep both your RV and your towing system well-maintained to ensure they operate efficiently.

Frequently Asked Questions About Towing a Vehicle Behind an RV

Here are some common questions adventurers ask about towing a vehicle behind their RV.

Do I need a special driver’s license to tow a vehicle behind my RV?

In most US states, a standard Class D driver’s license is sufficient for towing a vehicle behind an RV, provided the combined weight (RV + toad) doesn’t exceed 26,000 pounds. However, some states or specific heavy RV setups might require a commercial driver’s license (CDL) or a non-commercial Class A license. Always check the specific regulations for your state of residence and any states you plan to travel through.

How do I know if my vehicle can be flat towed?

The most reliable way to determine if your vehicle can be flat towed (four-down) is to consult your vehicle’s owner’s manual. Look for sections on “Recreational Towing” or “Dinghy Towing.” It will explicitly state if it’s permissible and outline any specific procedures, such as transmission settings, speed limits, or battery disconnections. Do not assume; always verify with the manufacturer’s instructions.

Is a supplemental braking system always necessary?

While laws vary by state, most require a supplemental braking system for towed vehicles exceeding a certain weight (often 1,500 to 3,000 pounds). Even if not legally mandated, a supplemental braking system is highly recommended for safety. It significantly reduces stopping distance, minimizes wear on your RV’s brakes, and improves overall control, especially in emergency situations.

Can I back up with a vehicle flat-towed or on a dolly?

It is generally not recommended and often impossible to back up with a vehicle that is flat-towed or on a tow dolly. Doing so can cause severe damage to the tow bar, base plate, toad’s steering components, or the dolly itself. If you find yourself in a situation requiring you to back up, it’s almost always best to unhitch the towed vehicle first and move it manually or drive it separately.

How does towing affect my RV’s fuel economy?

Towing a vehicle behind your RV will almost always decrease your RV’s fuel economy. The additional weight and increased aerodynamic drag require your RV’s engine to work harder. The exact impact depends on the weight of your toad, the type of RV, driving speed, and terrain. Expect a noticeable drop in miles per gallon, so factor this into your travel budget.

Embark on Your Next Adventure with Confidence

Towing a tow vehicle behind RV can truly revolutionize your travel experience, offering unparalleled freedom and convenience. While the initial setup and learning curve might seem daunting, the ability to explore independently at each destination is a game-changer for many outdoor enthusiasts.

Remember, safety is paramount. Take the time to understand your equipment, perform thorough pre-trip checks, and adjust your driving habits to accommodate the extra length and weight. Don’t hesitate to seek advice from experienced RVers, consult professional installers, or refer to your vehicle manuals for specific guidance.

With the right knowledge and preparation, you’ll soon be confidently navigating highways and byways, enjoying the best of both your rolling home and your nimble toad. Get ready to unlock new adventures, explore hidden gems, and create unforgettable memories. Stay safe, stay smart, and keep exploring!

Eric James
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