Key takeaways
- Flat towing is usually the fastest to hook up but only works with approved vehicles.
- A dolly avoids a base plate but needs storage.
- A trailer fits almost any car but is the heaviest and bulkiest option.
The three methods
- Flat towing (four-down): all four wheels roll on the road, connected by a tow bar.
- Tow dolly: the front wheels sit on a small two-wheel dolly while the rear wheels roll.
- Car trailer: the whole vehicle rides on a trailer with all four wheels off the ground.
Side-by-side comparison
| Factor | Flat tow | Tow dolly | Car trailer |
|---|---|---|---|
| Hookup time | Usually quickest | Longer: drive up, strap, secure | Longest: load, strap, secure |
| Storage at home and camp | Tow bar only | Dolly needs space | Full trailer needs space |
| Vehicle compatibility | Only approved vehicles | Mostly front-wheel-drive | Nearly any vehicle |
| Vehicle prep | Base plate, wiring, brakes | No base plate | No base plate |
| Added weight | Vehicle weight only | Vehicle plus dolly | Vehicle plus trailer |
| Can it be backed up? | No (unhook first) | Generally no | Yes, like any trailer |
| Upfront cost | Higher setup cost | Often lower | Varies by trailer |
Costs and ease of use vary by vehicle and equipment, so use the table as a general guide rather than a rule.
When flat towing makes sense
Choose flat towing if your vehicle is approved for it, you want quick hookups, and you do not want to store a trailer. You will need to invest in a base plate, lighting, and supplemental brakes up front.
When a tow dolly makes sense
A dolly works well for many front-wheel-drive cars that cannot be flat towed, and it avoids installing a base plate. Be sure the dolly and your hitch are rated for the combined weight, and plan where the dolly will be parked when it is not in use. Vehicles with certain drivetrains may need extra steps, so check the vehicle manual.
When a car trailer makes sense
A trailer suits vehicles that cannot be flat towed or dolly towed, including many all-wheel-drive and four-wheel-drive models. The trade-offs are weight, hookup effort, and storage. Trailers also add their own braking, licensing, and registration considerations.
Frequently asked questions
Is flat towing cheaper than a dolly?
Not always. The flat tow setup often costs more upfront because of the base plate, wiring, and brakes, but many RVers value the faster hookup and easier storage.
Can I flat tow an all-wheel-drive vehicle?
Only if the manufacturer approves it. Many AWD vehicles are not approved for four-down towing and are better suited to a trailer.
Which method is safest?
Each method is safe when the equipment is rated for the weight and used correctly. Safety depends on proper setup, braking, and following manufacturer instructions.
This page is general information. Always follow your vehicle owner's manual, equipment instructions, and the laws of the states and provinces you travel through.