How To Prevent Damage When Hauling a Car or Truck on a Trailer

Getting a car from one place to another on a trailer is one of those jobs that's simple to do and surprisingly easy to do badly. The vehicle makes it to the destination, sure, but it shows up with a scraped bumper, a rubbed fender or a strap mark ground into the paint, and now the move cost you more than a tank of fuel. The good news is that almost every kind of transport damage is preventable with a few specific habits, most of which take no extra time at all once you know them. Here's how to load, strap and protect a car or truck on a hauler so it arrives in the same shape it left.

Load it without scraping the underside

Damage often happens before the car is even on the trailer, right at the ramps. A low front end catches its bumper, air dam or exhaust where the ramp meets the deck, and a long car can high-center at that same break in the angle.

Know two things before you drive up: the car's ground clearance, and the trailer's deck height and ramp angle. If the car sits low, use a trailer with a shallower ramp angle or ramp extensions to flatten the approach, and drive up slow and dead straight. Sometimes backing a low or rear-engine car up the ramps gives better clearance, so think about which end hangs lower before you commit. It also helps to start with a hauler sized right for the vehicle, since a car crammed onto a too-short deck rides with its ends hanging past the ramps and rails where they're easy to clip. Read more about how to choose the right car hauler size.

For the full loading sequence, read more about how to load and tie down a car on a rental trailer. This is the part where patience pays, since a few seconds saved rushing the ramps isn't worth a cracked bumper cover.

Strap it in a way that protects the vehicle

How you attach the tie-downs is the biggest single factor in whether the car arrives unmarked. For a finished vehicle with good paint and chrome, wheel or tire straps, the kind that wrap over the tire or through the wheel, are the gentle choice. They hold the car by the one part built to take the load, and they let it ride on its own suspension instead of straining against it.

If you strap through the wheels, keep the webbing clear of the brake lines, calipers and any wiring on the inside of the wheel. And if you secure to the frame instead, use the manufacturer's designated tie-down points, never a brake line, a fuel line or a thin bracket, and know that chains and hooks are rigid enough to scratch or dent a finished body if they shift.

Either way, secure the car at four points, which is also the federal minimum for a vehicle under 10,000 pounds, and cross the straps front and rear so they control side-to-side movement. Work opposite corners in pairs as you tension, so the car stays balanced on the deck the whole time. Soft loop or lasso straps that cinch around each tire are a good middle ground, quick to set and easy on the finish. Whatever type you use, add safety chains as a backup, so a failed hook or a released ratchet can't turn into a loose car.

Tension it right, not too tight and not too loose

There's a sweet spot in how hard you crank the straps, and missing it in either direction causes damage.

Too tight is a real risk. Over-cranking compresses the suspension hard and can bulge a tire or stress a body panel, so use this reference: after tensioning, each tire should still look like a normally inflated tire, not squashed flat against the rim. If a sidewall is bulging out, you've gone too far.

Too loose is the other trap. A car strapped by the body rides up and down on its suspension over every bump, cycling the straps loose and tight until one lets go and the car starts to move and rub. This is exactly why wheel straps hold better: down at the tire, below the suspension's travel, they stay tight the whole trip. And wherever a strap crosses paint or a finished edge, slip a pad or a sleeve under it so the webbing can't wear a mark.

Protect it from the road and the weather

Once the car is secured, the road itself is the next threat. An open car hauler leaves the vehicle exposed to stone chips, road grime and whatever the weather does, and at highway speed a kicked-up rock can chip a windshield or pit a fresh finish.

For an everyday move that's usually fine. For a show car, a fresh paint job or a long haul, it's worth stepping up to an enclosed hauler, or at least adding front-end protection, so the vehicle arrives clean and unmarked. Read more about the car hauler open versus enclosed guide to weigh it. Expect the front of the car to take the worst of the spray and chips on an open trailer, and plan around that if the finish matters to you. One caution if you cover the car: don't throw a tarp over a hot or wet finish and strap it down at speed, since a cover flapping against paint for a few hundred miles sands it as surely as any rock.

Secure the loose stuff and check en route

A few small things left loose cause their own damage at speed. Before you pull out, roll the windows up, fold the mirrors in and retract or remove the antenna. Make sure the hood, trunk and any convertible top are latched and secure, since wind will find anything that isn't.

Put the car in park with the parking brake set, but let the straps hold it, not the transmission, since a car jostling against the parking pawl for hundreds of miles isn't doing it any favors.

Then re-check every strap after the first few miles and again along the way. Straps settle and loosen as the car works against them, and a strap you set tight in the driveway can be slack on the interstate, so a two-minute check on the shoulder is the cheapest insurance there is.

What about insurance and damage protection?

Before towing a rented trailer, contact your auto insurance provider to ask whether your policy covers liability and towing-related damage claims.

Eligible rentals booked through Big Rentals also include Basic Rental Protection at checkout. This added protection can help limit your financial responsibility for certain damage or theft events during the rental period.

For full details on how Basic Rental Protection works, including deductibles, exclusions, and renter responsibilities, review our FAQ and platform terms.

The Short Version

• Load without scraping: know the car's clearance and the trailer's ramp angle, use ramp extensions for a low car, and drive up slow and straight
• For a finished vehicle, use wheel or tire straps so it rides on its own suspension, and keep them clear of brake lines and wiring
• If you strap to the frame, use the designated tie-down points and never a brake line, fuel line or thin bracket
• Secure at four points, cross the straps and tension so each tire still looks normally inflated, not squashed
• Pad any strap that crosses paint, and step up to an enclosed hauler for a show car or a long haul
• Close the windows, fold the mirrors, set the parking brake but let the straps hold it, and re-check the straps after a few miles

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