How to Tow a Car with a Truck (Safely & Legally)

Towing a car with a truck requires a compatible hitch receiver (Class III or IV), a ball mount matched to your trailer coupler, safety chains rated at 2× the gross trailer weight, a tow dolly or flatbed trailer, a 4- or 7-pin wiring harness for trailer lights, and ratchet straps or wheel nets to secure all four tires. In most states, a supplemental braking system is also legally required once the towed load crosses 1,500–3,000 lbs.

The Equipment Checklist in Detail

Hitch Receiver: Check the rating stamped directly on the receiver tube near the pin hole — look for "Class III" (5,000-lb GTW) or "Class IV" (10,000-lb GTW). The class rating must meet or exceed the combined weight of the towed car and trailer.

⚠️ Warning: Never assume your truck has the correct hitch class; verify the rating stamped directly on the receiver tube, as many come from the factory with a Class II receiver unless a tow package was ordered.

Ball Mount and Coupler: The three common hitch ball sizes are 1-7/8", 2", and 2-5/16". Tow dollies almost universally use a 2" ball, while flatbed car trailers often use 2-5/16".

⚠️ Warning: Mismatching the ball to the coupler is one of the most common pre-trip errors. The coupler may latch but won't seat correctly, creating a serious risk of trailer separation at speed.

Safety Chains: Cross them under the coupler in an X pattern with enough slack to turn but not enough to drag. Per standard hitch manufacturer guidelines, chains must be rated at a minimum of 2× the gross trailer weight. For example, if you're towing a 3,500-lb car on a 1,000-lb trailer, your chains need to be rated for at least 9,000 lbs combined.

✅ Pro Tip: Crossing safety chains in an "X" pattern under the coupler provides an extra layer of security, catching the trailer tongue if it accidentally detaches from the hitch.

Trailer Lighting: All 50 states require functioning brake lights and tail lights on the towed unit, per federal FMCSA cargo and trailer regulations at fmcsa.dot.gov. A 4-pin flat connector covers basic stop/turn/tail functions. If your trailer has electric brakes, you'll need a 7-pin round connector and a brake controller mounted in the cab.

Tie-Down Straps and Wheel Nets: Ratchet straps should run from the trailer's D-rings to the towed vehicle's frame or designated tie-down points.

⚠️ Warning: Never hook tie-down straps to a suspension component or plastic body panel, as this can cause damage or lead to an insecure load. For flatbed trailers, a four-point tie-down system with straps rated at 3,300 lbs each is the baseline. Wheel nets, which grip the tire sidewall, are often easier for DIYers to attach correctly.

Most half-ton and larger pickup trucks can tow a standard passenger car when properly equipped. A typical midsize sedan weighs 3,000–3,500 lbs. Add a tow dolly (750–1,200 lbs) or a flatbed car trailer (1,800–2,900 lbs), and your combined load lands between 4,200 and 6,400 lbs — well within the rated capacity of most half-ton trucks. The crucial caveat is that the max tow rating printed in the brochure only applies when the truck was ordered with the factory tow package.

On Ford trucks, for instance, that's the Class IV Trailer Tow Package (option code 53B on recent F-150s), which adds a transmission oil cooler, upgraded radiator, 7-pin wiring harness, and heavy-duty flasher relay. Without it, that advertised ceiling doesn't apply to your truck.

💡 Key Takeaway: The advertised max tow rating is often only valid if your truck was equipped with a factory tow package. Always verify your specific configuration using the window sticker or the door-jamb label.

When a Half-Ton Hits Its Ceiling

Half-Ton Limitations: While a half-ton truck like an F-150 can tow many passenger cars, its capabilities have a ceiling. The F-150 tops out at 9,900 lbs in its highest-rated configuration, which is sufficient for most passenger vehicles.

📊 Quick Fact: A typical midsize sedan weighs 3,000–3,500 lbs, while larger SUVs can range from 5,500–6,000 lbs.

When to Upgrade: If you're moving a larger SUV weighing 5,500 lbs on a 2,500-lb flatbed, your combined load is 8,000 lbs — and that's before accounting for tongue weight eating into payload. This pushes many half-ton trucks to their absolute limit. For a heavier tow setup (e.g., a loaded Suburban on a gooseneck), you will step outside half-ton territory entirely and need a 3/4-ton truck like an F-250, Silverado 2500HD, or RAM 2500 at minimum.

The four methods for towing a car with a truck are flatbed trailers, tow dollies, flat towing with a tow bar, and tow straps for very short distances. Each method suits different drivetrains, distances, and budgets. Choosing the wrong method for your towed vehicle's drivetrain is how transmissions get destroyed.

Sources: U-Haul rental pricing, manufacturer product specs, NHTSA vehicle weight data

Flatbed Trailer Towing

Flatbed trailer is the gold standard for car transport. With every wheel off the ground, drivetrain damage to the towed vehicle is impossible. For a DIY car trailer setup, load the vehicle as far forward as possible.

✅ Pro Tip: For stable towing with a flatbed trailer, ensure your tongue weight lands between 10–15% of the total trailer load by positioning the towed vehicle correctly.

Tow Dolly Towing

A tow dolly lifts the front wheels and allows the rear wheels to roll on the road. This method works cleanly for front-wheel-drive vehicles like a Honda Civic or Toyota Camry.

⚠️ Warning: If your towed car is rear-wheel-drive or all-wheel-drive, the driven rear wheels spinning on the road can pump transmission fluid into parts designed to be stationary, leading to severe damage in under 50 miles. Our full tow bar vs. tow dolly comparison breaks this down in more detail.

Flat Towing (Tow Bar)

Flat towing requires the towed vehicle to be explicitly rated for four-down towing by its manufacturer. The Jeep Wrangler is one of the most common flat-tow candidates; many other vehicles are not approved at all.

💡 Key Takeaway: Always check our flat tow compatible vehicles list or your car's owner's manual before assuming your vehicle qualifies. For flat towing, you'll also need a tow bar, safety cables, and a supplemental braking setup.

Tow Straps (Emergency Use Only)

Tow straps are emergency recovery tools, not transport methods.

⚠️ Warning: Using a strap to pull a vehicle down a public road at highway speed — without functioning lights and without a rigid connection — is illegal in most states and extremely dangerous in all of them. See our tow strap guide for what they're actually rated to do.

DIY car towing is legal in all 50 states, but the requirements vary enough that you should check your specific jurisdiction before loading up. Functioning tail lights and brake lights on the towed unit or trailer are mandatory everywhere, per federal FMCSA standards. Beyond that, state law diverges significantly.

State-Specific Towing Laws:

• California: Vehicle Code §22406 restricts vehicles towing trailers to 55 mph, irrespective of the posted freeway speeds.
• Texas: Has no equivalent speed restriction; you may tow at the posted limit.
• Florida: Requires a breakaway safety switch on trailers over 3,000 lbs but has no vehicle inspection program, so enforcement is inconsistent.
• Colorado: Mandates supplemental braking on any towed vehicle over 3,000 lbs and strongly enforces it on mountain corridors like I-70, where grade pressure on long descents can overwhelm a tow vehicle's brakes alone.

Use the towing laws by state tool to pull the specific rules for your route — especially if you're crossing state lines, where you're subject to the stricter of the two states' laws for the segment you're driving.

Before you hook anything up, run the math using your truck's actual numbers — not the brochure ceiling. Enter your truck's year, make, model, and configuration below to get a personalized capacity check.

Manual Capacity Calculation Method

Here's how to do it by hand if you prefer: Pull three numbers from your truck's driver-side door-jamb sticker — GVWR, GAWR (front and rear axle), and payload capacity. Then cross-reference with the Trailer Towing Supplement (Ford publishes this separately from the owner's manual; GM and RAM include it as a dedicated section).

Real-World Capacity: A Worked Example

Scenario: Say you're towing a 3,200-lb Honda Accord on a 950-lb U-Haul tow dolly.

• 1. Total Towed Weight: 3,200 lbs (car) + 950 lbs (dolly) = 4,150 lbs.
• 2. Estimated Tongue Weight: ~510 lbs (as calculated in the original example, typically 10-15% of total towed weight).
• 3. Truck's Occupant & Cargo Weight:
  • Driver: 200 lbs
  • Passenger: 170 lbs
  • Gear in Cab: 60 lbs
  • Total Assumed Cab Load (from example): 940 lbs.
• 4. Total Payload Consumption:
  • Cab Load: 940 lbs
  • Tongue Weight: 510 lbs
  • Combined Payload Used: 940 lbs + 510 lbs = 1,450 lbs.
• 5. Payload Rating Check:
  • Against a 1,650-lb payload rating, you're using 1,450 lbs, which is 88% of capacity.

The Critical Takeaway: This calculation is before accounting for a full gas tank (~130 lbs) or any additional cargo in the truck bed. This scenario highlights how easily payload capacity becomes the binding constraint, even if your truck's advertised tow rating has significant headroom.

💡 Key Takeaway: Your truck's payload capacity is often the limiting factor in real-world towing, not just the maximum tow rating. Always account for driver, passengers, cargo, and tongue weight.

For a more thorough breakdown of payload vs. tow rating math, the towing capacity guide walks through every number on the sticker. You can also use the payload calculator to model your specific load.

When a Half-Ton Isn't Enough

What won't work: If the vehicle you're towing is a large SUV — like a loaded Chevy Suburban or Ford Expedition — its curb weight alone can hit 5,500–6,000 lbs. Add a flatbed trailer at 2,500 lbs and you're at 8,000–8,500 lbs combined. Performance Margins: A half-ton truck at its absolute max might handle that load on paper, but you'll be right at the ceiling with zero margin for grade, altitude, or acceleration. Altitude Impact: Above 5,000 feet elevation, naturally aspirated engines lose roughly 3% of power per 1,000 feet. That means a 9,900-lb rating tested at sea level will result in approximately 15% less engine power at 7,500 feet in the Rockies, making heavy towing significantly more challenging. For heavy SUVs, a 3/4-ton truck is the right tool.

Towing within your truck's rated capacity should not damage the transmission — but two conditions accelerate wear fast: skipping tow/haul mode and using degraded transmission fluid. Tow/haul mode adjusts shift points to keep the engine in its power band on grades, reducing heat cycling. Without it, your transmission hunts between gears on hills and generates excess heat with every shift.

✅ Pro Tip: Always engage tow/haul mode when towing to optimize transmission shift points and prevent excessive heat buildup, especially on grades.

Before any extended towing season, change the transmission fluid and filter. Ford's 6R80 transmission specifies Mercon LV fluid; GM's 6L80 and 8L90 units call for Dexron VI.

⚠️ Warning: Using the wrong fluid or letting it degrade is the leading cause of transmission failure in half-ton trucks used for regular towing, according to NHTSA technical service data.

The bigger transmission risk is actually in the vehicle being towed. Automatic transmission vehicles towed with their drive wheels on the ground — like an AWD crossover on a tow dolly — can suffer catastrophic internal damage within 50 miles. The rear differential and transmission are designed to spin when the engine is running and the fluid pump is active. Roll the drive wheels at highway speed with the engine off and the pump stops, lubrication fails, and metal contacts metal. This is why checking flat-tow compatibility before choosing your method matters so much. See towing with an automatic transmission for the full breakdown by drivetrain type.

⚠️ Warning: Towing an automatic transmission vehicle with its drive wheels on the ground (and engine off) can cause severe, irreversible internal damage due to lack of lubrication.

DIY car towing costs $50–$120 per day for a tow dolly rental or $70–$200 per day for a flatbed trailer, plus a 20–40% fuel economy hit while towing. A professional tow service charges $75–$125 for local tows under 10 miles and $2–$7 per mile for longer hauls, according to AAA and industry pricing data.

📊 Quick Fact: For moves over 100 miles, DIY towing typically saves $300–$800 versus hiring a professional auto transport service.

The break-even point depends heavily on distance and fuel cost. On a 50-mile move with a truck getting 15 mpg unloaded (dropping to 10 mpg under load), you'll burn roughly 5 extra gallons — about $20 at current prices. Add the $85 tow dolly rental and your total is around $105. A tow company covering the same 50 miles at $4/mile charges $200 plus hookup fees, often totaling $275–$325. The DIY option wins by $170–$220 on that route.

Use the towing cost calculator to model your specific trip, or check the full towing cost guide for a deeper comparison.