Can You Tow A Car With Another Car? | The Truth

While technically possible, towing a car with another car safely and legally requires specific equipment, careful planning, and adherence to regulations.

We’ve all been there: a buddy’s car breaks down, or you need to move a project vehicle across town. The thought of hitching it up to your own ride naturally comes to mind. It seems simple enough, but there’s a lot more to it than just a rope and a prayer.

As a seasoned mechanic, I’ve seen the good, the bad, and the downright dangerous when it comes to car-to-car towing. Understanding the mechanics, the legalities, and the right way to do things keeps everyone safe and avoids costly damage.

The Basics: Understanding Your Vehicle’s Capacity

Before you even think about connecting two cars, you need to know what your tow vehicle can handle. Every vehicle has a specific towing capacity, which is the maximum weight it can safely pull.

You can find your car’s towing capacity in the owner’s manual or on a sticker inside the driver’s side door jamb. This figure is determined by the manufacturer based on the engine, transmission, chassis, and braking system.

Exceeding this capacity puts immense strain on your engine, transmission, brakes, and suspension. It’s like asking a marathon runner to suddenly carry a refrigerator; they just aren’t built for it.

Also, consider the Gross Combined Weight Rating (GCWR). This is the maximum permissible weight of the tow vehicle, the towed vehicle, and all cargo and passengers combined. Staying within this limit is non-negotiable for safety.

Can You Tow A Car With Another Car? — Choosing the Right Method

Towing a car with another car isn’t a one-size-fits-all situation. The method you choose significantly impacts safety, legality, and mechanical stress.

There are three primary methods for car-to-car towing, each with distinct requirements:

• Flat Towing (Four Wheels Down): This involves connecting the towed vehicle directly to the tow vehicle with a tow bar. All four wheels of the towed car remain on the ground.
• Tow Dolly (Two Wheels Up): A tow dolly lifts the front (or sometimes rear) two wheels of the towed vehicle off the ground. The remaining two wheels roll freely.
• Trailer Towing (All Wheels Up): This is the safest and most mechanically benign method, but it requires a dedicated car trailer. All four wheels of the towed vehicle are off the ground.

Using just a tow strap or chain is generally discouraged for vehicle-to-vehicle towing on public roads. These methods offer minimal control, no braking assistance for the towed car, and present significant safety hazards.

Here’s a quick look at common equipment and their general suitability:

Equipment Type	Primary Use	Key Limitation
Tow Strap/Chain	Short, emergency pulls	No steering/braking control
Tow Bar	Flat towing	Requires towed vehicle steering unlocked
Tow Dolly	Two-wheel lift	Can stress drivetrain if not prepped

Essential Gear for Safe Car-to-Car Towing

Proper equipment is the backbone of any safe towing operation. Skimping here can lead to disaster, not just inconvenience.

If you opt for flat towing with a tow bar, you need more than just the bar itself:

• Tow Bar: This is a rigid connection between the two vehicles, typically attaching to the towed vehicle’s frame or a specialized base plate.
• Safety Chains: Two independent safety chains are mandatory. They act as a backup in case the primary tow bar connection fails. These should cross under the tow bar to create a cradle.
• Supplemental Braking System: Many states require a separate braking system for the towed vehicle if its weight exceeds a certain threshold (often 1,500-2,000 lbs). This system applies the towed car’s brakes in sync with the tow vehicle.
• Towing Lights: The towed vehicle’s taillights, brake lights, and turn signals must function and be visible. Magnetic tow lights or a wiring harness connecting to the tow vehicle’s electrical system are common solutions.

For a tow dolly, the requirements are similar. The dolly itself must be rated for the weight of the towed vehicle. It will also need its own lights and often surge brakes.

Always ensure all connections are secure, free from damage, and properly rated for the combined weight. A loose connection is an accident waiting to happen.

Mechanical Realities: Protecting Your Drivetrain and Systems

Towing can be incredibly tough on a vehicle’s mechanical components. Understanding these stresses helps prevent expensive repairs.

Automatic transmissions are particularly vulnerable during flat towing. When an automatic transmission is towed with its drive wheels on the ground, the output shaft turns, but the input shaft and pump often do not. This leads to a lack of lubrication and can quickly burn up the transmission.

Many manufacturers explicitly state that their automatic transmission vehicles cannot be flat towed. If flat towing an automatic is permitted, it usually requires disconnecting the driveshaft or using a tow dolly to lift the drive wheels.

Manual transmissions are generally more forgiving for flat towing, as long as the transmission is in neutral. However, always check the owner’s manual for specific instructions and limitations.

The towed vehicle’s steering system also needs attention. For flat towing, the steering wheel must be unlocked so the wheels can track correctly behind the tow vehicle. Some vehicles require specific procedures to keep the steering unlocked without draining the battery.

Brakes and suspension on both vehicles also take a beating. The tow vehicle’s brakes work harder, and the suspension components are under increased load. The towed vehicle’s suspension is constantly articulating, especially over bumps and turns.

Navigating the Law: Regulations for Towing on Public Roads

The rules for towing vary significantly by state and local jurisdiction. Ignorance of these laws is no defense and can result in hefty fines or even impoundment.

The Department of Transportation (DOT) sets federal guidelines, but state DMVs and highway patrols enforce specific regulations. Always check your state’s particular towing laws before hitting the road.

Common legal requirements include:

• Weight Limits: Many states have maximum weight limits for towed vehicles, especially when a supplemental braking system is not used.
• Braking Requirements: As mentioned, supplemental braking for the towed vehicle is often mandated above a certain weight. This ensures you can stop safely and maintain control.
• Lighting and Visibility: The towed vehicle must have fully functional taillights, brake lights, and turn signals. Reflectors are also often required.
• Safety Chains: Two independent safety chains are a universal requirement for tow bars and dollies.
• Driver’s License Class: For heavier combinations, a standard driver’s license might not be sufficient. Check if a commercial driver’s license (CDL) or special endorsement is needed for your specific setup.

Some states prohibit certain types of car-to-car towing entirely, especially using just a strap or chain on public highways. Always prioritize safety and legality over convenience.

Executing a Safe Tow: Pre-Checks and On-Road Practices

Even with the right equipment and a clear understanding of the law, a safe tow relies heavily on careful execution. A thorough pre-trip inspection is paramount.

Before you move an inch, perform these checks:

1. Verify Connections: Double-check the tow bar or dolly attachment points. Ensure safety chains are correctly crossed and secured.
2. Check Lights: Confirm all lights on both vehicles are working: headlights, taillights, brake lights, and turn signals.
3. Tire Pressure: Ensure tires on both vehicles are properly inflated to manufacturer specifications.
4. Fluid Levels: Check engine oil, transmission fluid (if applicable), brake fluid, and coolant in both vehicles.
5. Emergency Kit: Have a roadside emergency kit, including reflective triangles, a first-aid kit, and basic tools.

On the road, adjust your driving style significantly. Towing adds length, weight, and complexity to your vehicle combination.

• Reduce Speed: Drive slower than usual. Higher speeds amplify any issues and reduce reaction time.
• Increase Following Distance: Your braking distance will be much longer. Leave ample space between you and the vehicle ahead.
• Wider Turns: The towed vehicle will cut corners. Make wider turns to avoid hitting curbs or other obstacles.
• Gentle Inputs: Accelerate, brake, and steer smoothly. Sudden movements can cause instability or jackknifing.
• Monitor Mirrors: Constantly check your mirrors to monitor the towed vehicle. Watch for swaying, tire issues, or any unusual behavior.
• Stop and Re-Check: After the first few miles, pull over in a safe location and re-check all connections and lights.

Remember, towing is a demanding task. If you feel uncomfortable or encounter unexpected issues, pull over safely and assess the situation. Sometimes, calling a professional tow service is the smartest move.

Here’s a quick checklist for your tow day:

Category	Check Points
Connections	Tow bar/dolly secure, safety chains crossed
Visibility	All lights functional (tow & towed), mirrors clear
Vehicle Prep	Tires inflated, fluids checked, steering unlocked

Can You Tow A Car With Another Car? — FAQs

Is it legal to tow a car with just a rope or chain on public roads?

Generally, no. Most states prohibit towing a vehicle with just a rope or chain on public roads because it offers no control over the towed vehicle’s steering or braking. This method creates significant safety hazards and is typically reserved for very short, off-road emergency pulls. Always check your local Department of Motor Vehicles (DMV) regulations for specific rules.

What are the risks of towing a car with an automatic transmission?

Towing a car with an automatic transmission with its drive wheels on the ground can severely damage the transmission. The transmission’s internal components may not receive proper lubrication without the engine running, leading to overheating and failure. Consult the owner’s manual for specific towing instructions; often, disconnecting the driveshaft or using a tow dolly is required.

Do I need special lights for the car I’m towing?

Absolutely. The towed vehicle must have fully functioning taillights, brake lights, and turn signals that are visible to other drivers. This often requires magnetic tow lights or a wiring harness that connects to the tow vehicle’s electrical system. These lights ensure that your combined vehicle is clearly seen and that your intentions (braking, turning) are communicated.

How much weight can my car safely tow?

Your car’s safe towing capacity is specified by the manufacturer and can be found in your owner’s manual or on a sticker inside the driver’s door jamb. This rating accounts for the engine, transmission, brakes, and chassis design. Exceeding this weight can strain your vehicle’s components, reduce braking effectiveness, and compromise stability, leading to unsafe driving conditions.

When should I consider calling a professional tow service instead of DIY towing?

You should call a professional tow service if the towed vehicle is significantly heavier than your tow vehicle’s capacity, if you lack the proper equipment (tow bar, dolly, supplemental brakes), or if you are uncomfortable with the process. Professional services have specialized equipment and insurance to handle complex towing situations safely and legally. It is often the safest and most reliable option.