Buying

Tips for Buying Semi-Truck Trailers

Jil McIntosh
Published: March 30, 2026
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tips for buying trailers

A semi can’t make much money if it doesn’t have a trailer behind it, but buying one isn’t always a simple operation. We have tips for getting the right trailer for the job, and what to look for when you’re buying, especially if it’s a pre-owned model.

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Trailers Based on Load Type

Obviously, the loads you carry will determine the overall type of trailer you get, such as moving equipment on a flatbed trailer versus packing an enclosed trailer full of pallets. But if you can be flexible, look deeper into what types of loads have the potential to give you the best return on investment in the trailer you buy. For example, a refrigerated trailer could open you up to carrying potentially higher-value loads such as fresh food or temperature-dependent pharmaceuticals.

Buying New vs. Used

Whether you’re buying new or pre-owned, there are pros and cons to each. A used trailer will cost less, which can be an important consideration for your bottom line. A new trailer will be pricier, but you can order exactly what you want, instead of trying to find an appropriate used one, and you know the condition it will be in. Depending on the age of used trailers you’re considering, a new trailer may also have more up-to-date features, such as better aerodynamics or lighter-weight construction that can potentially save fuel.

Consider Compatibility

Once you know what type of trailer you’re going to buy, you need to fit it to your truck, not the other way around. Ensure it’s compatible with the truck’s capacity and weight rating, configuration, hitch design, and height.

New Trailers: What to Expect

Make sure the trailer is configured for what you plan to do with it and the loads you will be carrying. See whether it has air or spring suspension; inspect its brakes and tires; check if it’s a standard or drop floor; see if it has a solid or translucent roof; see if the floor is metal or laminated wood; and know what type of doors and ramp it has for loading and unloading. Also, look at where you’re most likely going to be using it, as a longer trailer will give you more load space but will be harder to maneuver on city streets. Research the warranty, including where it can be taken for repair and your responsibilities under that coverage if something goes wrong. 

Used Trailers: What to Expect

Follow the same pre-purchase procedures with used trailers as you would when buying new, but understand that you may not be able to find exactly what you want as you would when ordering a new one to your exact specifications. In this case, weigh any compromises you may have to make against whether it can still do the job you need it to do, and if those concessions are adequately offset by the trailer’s price and condition. If it’s an older model, make sure parts are still available. And if the trailer isn’t local, tack your time and fuel costs onto the final price as well. 

Consider Compromises

Obviously, a used trailer will have whatever features and equipment the original order specified. And while you have more control over what you’re getting on a new trailer, there might be a model in stock that isn’t precisely what you want, but it’s a better deal than if you ordered one, and you get immediate delivery. In addition to what you want the trailer to have, assess what you can do without, if necessary. Figuring this out before you start shopping can ultimately help you make better decisions once you see what’s available.

How to Assess Used Trailers

Just as you do when buying a used truck, look at every aspect of the trailer, including its maintenance records. The chassis should be solid, as rust-free as possible and without cracks or sloppy welds. The brakes should stop smoothly and straight, and the tires shouldn’t show uneven wear. All the lights should work, and the wiring shouldn’t be frayed or loose. With an enclosed trailer, get inside and have someone close the door, and then look for holes. Make sure the doors and ramp work smoothly; ensure the floor is solid; and if it’s a reefer, make sure that system works well. Finally, have someone pull it and follow behind to be sure it tracks straight and turns smoothly.

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Extra Items on Trailers

Sellers will usually take off accessory items if they can be transferred to another trailer, but they may leave them on if they’re not using that type of equipment anymore. These can include straps and ratchets, aerodynamic fairings, tarps, and more. They’ll raise the trailer’s price but may save you the time and effort to install your own. Research the price of these accessories so you’re not overpaying for them.

When you are looking for a trailer, consider the listings and the most popular types of trailers on the marketplace to find the one that’s right for your needs.

Jil McIntosh's profile picture Jil McIntosh
Jil McIntosh is an award-winning writer who covers the auto industry, including consumer and commercial vehicles, technology, and “how it works” articles. She’s also an enthusiast who owns a car and pickup truck from the 1940s, and a 1950 farm tractor.