How to tow a car with a tow dolly

A tow dolly works for front-wheel-drive cars (front wheels on the dolly, rear wheels rolling) up to roughly 4,400 to 4,800 lb depending on the dolly. Rear-wheel-drive or all-wheel-drive cars need the driveshaft disconnected, or a different towing method entirely. The standard sequence: hitch the dolly, drive the car onto the platform front-first, strap both front tires, attach safety chains, plug in the lights. Total time about 20 minutes once you know the steps.

A tow dolly is not a trailer. It does not have a deck. The towed car’s two front wheels sit on the dolly platform, the two rear wheels stay on the road. That makes it lighter and cheaper than a full car hauler trailer, but it adds constraints.

What you can and cannot tow on a dolly

U-Haul’s published limits as of 2026: maximum towed vehicle weight is 4,450 lb for their standard tow dolly, with front wheels of the towed car spanning 60 to 78 in. Towed vehicle must be front-wheel drive only for U-Haul rentals. Other rental dollies vary, check the rated capacity sticker on the dolly’s tongue.

Step-by-step: loading

1. Park the dolly behind the tow vehicle on level ground. Block the dolly wheels.
2. Couple the dolly to the tow vehicle. Lower the coupler onto the hitch ball (most rental dollies use a 2 in ball), close the latch, drop the pin. Cross the safety chains under the tongue and clip them to the tow vehicle, leaving enough slack for turning but no more.
3. Plug in the lights. Most rental dollies use a 4-pin flat connector. Test brake lights, turn signals, and tail lights with a helper before loading the car.
4. Lower the dolly ramps. Some dollies have hinged ramps, others have removable ramps stored on the tongue.
5. Align the car with the dolly. The car must drive on front-first. Backing on is unsafe with the steering wheel free.
6. Drive the car onto the platform slowly. Wheels straight. Stop when the front tires center on the platform and seat against the tire stops.
7. Set the parking brake and shut the car off. Leave the key in the on position with the steering wheel locked straight if the manual permits, or unlocked if the manual requires steering wheel free for towing.
8. Strap the front tires. Each tire gets a ratchet strap that goes over the top of the tire, through the dolly’s slot, and ratchets down until the tire compresses into the platform.
9. Connect the safety chains from the dolly to the front of the car. Most dollies have two chains designed to loop through wheel openings or rated tow points.
10. Raise the ramps and pin them. Walk around and confirm everything is tight.
11. Re-check at 5 miles, then every 50 miles. Straps loosen on the first stops. This is the single biggest reason cars come off dollies.

Driving with a dolly

• Speed limit: most rental dollies are rated to 55 mph and U-Haul caps users there. Check the rated limit on your dolly.
• Cornering: take wider lines. The towed car’s rear wheels track inside the dolly path.
• Braking: dollies do not have brakes. Your tow vehicle stops everything. Stopping distance roughly doubles.
• Backing up: do not. A dolly cannot be reversed in a controlled way with a car loaded. If you have to back up, unload first.
• Hills: shift to a lower gear on long descents. Use engine braking to save the tow vehicle’s brakes.

RWD and AWD: the driveshaft problem

A rear-wheel-drive automatic on a tow dolly turns the transmission’s output shaft without the engine running. There is no oil pump pressure, no lubrication. After 50 miles or so the transmission scorches.

Two options for RWD automatics:

• Disconnect the driveshaft. Mark the rear flange position with a paint pen, remove four bolts at the rear U-joint, slide the shaft forward to disengage the front. Strap the loose end up to the underbody so it does not drag. Plug the transmission tail housing with a tail-shaft plug or a rubber cap to keep the fluid in. Total time about 30 minutes, transmission fluid stays in.
• Use a flatbed trailer instead. Faster overall once you factor in the driveshaft work.

AWD vehicles cannot safely use a tow dolly under any condition. Two wheels rolling and two wheels stationary spins the center differential or transfer case with no path for the energy to go. Use a flatbed.

Some manual transmission RWD cars can roll on a dolly with the transmission in neutral and the key in the on position (so the steering lock is off, but more importantly the output shaft is just spinning bearings). Confirm with the owner’s manual before you do this.

Connecting the lights properly

Dolly lights work off the tow vehicle. A typical setup:

• 4-pin flat connector on the tow vehicle to 4-pin flat on the dolly.
• If your tow vehicle has a 7-pin, you need a 7-to-4 adapter. Most pickup tow packages include one.
• Test running lights, left turn, right turn, and brake before pulling onto the road. A blown bulb on the dolly is a $5 fix in the parking lot and a roadside warning ticket if missed.

Some modern vehicles have an Integrated Trailer Module that sees an open connector or a wiring fault and shows an alert. Ford recall 26C10 from March 2026 (NHTSA 26V104000) covers 4.3 million Fords and Lincolns for an ITM software fault that can mis-report or interrupt trailer light and brake signal. Affected: F-150 2021 to 2026, Super Duty 2022 to 2026, Ranger 2024 to 2026, Maverick 2022 to 2026, Expedition 2022 to 2026, Transit 2026, Lincoln Navigator 2022 to 2026. The fix is a free OTA update. Confirm by VIN at ford.com/support/recalls if you have one of these and your dolly lights misbehave.

Common rookie mistakes

• Loading the car backwards. The front wheels need to be on the dolly so the steering geometry stays caster-positive while rolling.
• Not setting the parking brake on the towed car before unstrapping. The car rolls back off the dolly the second the front tires clear the stops.
• Strapping over the tire’s bead with a kink in the strap. Friction in transit can cut the strap.
• Skipping the 5-mile check. Polyester webbing stretches under first-load. The straps that were tight in the driveway are loose by exit one.
• Towing an AWD car on a dolly. Do not. Use a flatbed.