Owning an open car hauler trailer is a great way to transport vehicles if you are a dealer, collector, or weekend motorsports enthusiast. They offer flexibility, visibility, and simple loading, but like any equipment exposed to the elements and highway wear and tear, they require some upkeep to stay safe and on the road.
A well-maintained open car hauler trailer not only has a nicer appearance but also runs better, lasts longer, and protects your vehicle and your investment. Whether you utilize your trailer once a week or once a season, a maintenance checklist keeps you ready for the road at all times.
Inspect Tires for Wear and Pressure
Tires are among the most important safety features on any trailer. Before every trip, inspect your open car hauler trailer’s tires for tread depth, cracking, bulges, and other signs of damage. Low pressure is a common issue that can lead to blowouts or uneven wear. Always keep a tire pressure gauge on hand and check your tire pressure when the tires are cold. Use the PSI recommended by the manufacturer, usually found on the trailer frame or in the owner’s manual. If your trailer has a spare tire, don’t forget to check it regularly to be sure it’s in good condition.
Check the Wheel Bearings
Wheel bearings allow the wheels on your open car hauler trailer to spin freely and smoothly. Bearings dry out, corrode, or wear over time, especially if your trailer is left standing still for an extended period or in situations where your trailer is exposed to water or road salt.
You should replace or repack your wheel bearings at least once a year, or more often if you do a lot of towing long distances. A good rule of thumb is to have them inspected every 12,000 miles. Some of the signs of bearing issues are excessive heat from the wheel hubs, noise, or grease leakage that you can see.
Check and Test the Brakes
Not every open car hauler trailer has brakes, but if your trailer is equipped with them, it requires periodic testing and maintenance. Trailer brakes are essential for slowing and stopping safely, especially when transporting heavier vehicles.
Have your tow vehicle’s brake controller calibrated properly for your trailer’s weight. Periodically inspect the brake pads, drums, wiring, and magnets for wear and corrosion. Note unusual noises or vibrations when braking. If something feels unusual, have the brakes checked by a professional.
Check the Coupler and Hitch
The hitch and coupler are the primary attachment points between the open car hauler trailer and your tow vehicle. These must be in good order to avoid dangerous detachments or unstable towing.
Check the ball mount, coupler, safety chains, and breakaway system for cracks, rust, or wear. Make sure all clips and pins are present and locked in position. Lubricate moving parts regularly to enhance smooth function and reduce friction. If your trailer has a jack stand, make sure it extends and retracts smoothly and locks securely.
Check the Frame and Deck
The structural integrity of your open car hauler trailer is important for safe operation. Periodically inspect the steel or aluminum frame for rust, cracks, dents, or signs of fatigue. Pay close attention to welds, joints, and suspension mounts.
If your trailer has a wooden deck, check for rot, warping, or loose boards. Keep the deck clean and dry whenever possible. Sealing the wood annually can significantly extend its life. For metal decking, look for rust or flaking paint and touch up as needed to prevent corrosion from spreading.
Maintain the Lighting and Wiring System
Trailer lights are not just a legal necessity but also a safety necessity. Make sure all the brake lights, turn signals, tail lights, and marker lights are in good working condition prior to every trip. If any of the lights are dim, flickering, or not at all operational, inspect the bulbs, fuses, and wiring for issues.
Wiring on open car hauler trailers is usually exposed, thus susceptible to damage from road debris, weather, and wear due to movement. Tighten loose wires, seal exposed connections, and replace damaged wires immediately. Applying dielectric grease can keep electrical connections safe from moisture and corrosion.
Wash After Every Use
Washing your trailer after use, especially after driving in rain, snow, or on salted roads, prevents grime and corrosive materials from accumulating. Use a pressure washer or hose to rinse mud, dirt, and debris off the deck, undercarriage, and wheels.
Take the time to dry the trailer or leave it in the sun to air dry. A clean trailer not only looks more professional, but you’ll be able to spot small problems before they become big ones.
Store Your Trailer Properly
When not in use, store your open car hauler trailer in a way that protects it from the elements. If possible, park it under a shelter or use a breathable trailer cover. Raise the tongue jack slightly to encourage drainage and prevent water pooling. If storing for long periods, consider placing the trailer on jack stands to take pressure off the tires and suspension.
Preventive maintenance is the key to a reliable and safe open car hauler trailer. From tires and brakes to lighting and latches, every part of the trailer plays a role in safe transport. By following this checklist and inspecting your trailer regularly, you can extend its lifespan, avoid costly repairs, and make your vehicle hauls as easy and trouble-free as possible.
