The Ultimate Buyer's Guide for Purchasing Specialty Semi Trailers

30 Jun.,2025

 

A Comprehensive Guide to Semi-trailers - TEC Equipment

Welcome to TEC Equipment's all-encompassing guide to semi-trailers.

For more information, please visit our website.

This guide is designed to cater to both beginners in the trucking industry and seasoned professionals. We aim to provide you with valuable insights into:

Understanding the Basics of a Semi-trailer

A semi-trailer is a specialized type of trailer that is towed by a tractor unit or a semi-truck. It's a crucial component of the logistics industry, facilitating the transportation of goods and materials over long distances. A semi-trailer differs from a full trailer in that it lacks a front axle and relies on the tractor unit for support and propulsion.

Key components of a semi-trailer include:

  • Frame: The structural backbone of the trailer, typically made of steel to withstand heavy loads.
  • Axles and Wheels: Several axles and wheels distribute the weight evenly, ensuring stability while the semi-trailer is in motion.
  • Suspension System: Helps absorb shocks and vibrations, ensuring a smooth ride for the cargo.
  • Braking System: Connected to the tractor unit, it allows the driver to slow down or stop the trailer when necessary.
  • Body: The cargo-carrying section of a semi-trailer, which can be either enclosed or open, depending on the type of goods being transported.

Semi-trailers come in a variety of sizes and configurations to accommodate different types of cargo, such as dry goods, refrigerated goods, or bulk materials. They play a vital role in the supply chain, enabling efficient and reliable transportation of goods across the country.

Exploring Different Types of Semi-trailers

The world of semi-trailers is diverse, with various types designed to cater to different transportation needs. There are four common types of trailers: flatbed trailers, dry van trailers, refrigerated trailers, and vocational trailers.

  • Flatbed trailers are versatile and widely used in the logistics industry. They consist of a flat, open deck with no walls or roof, which facilitates easy loading and unloading of goods from any side. Flatbed trailers are commonly used for transporting large and heavy items such as construction materials, machinery, and vehicles.
  • Dry van trailers provide a secure and weatherproof environment for transporting goods. These trailers have walls and a roof, protecting the cargo from external elements and potential theft. Dry vans are commonly used for transporting sensitive or valuable goods like electronics, furniture, or pharmaceutical products.
  • Refrigerated trailers, or 'reefers', are designed to transport perishable goods at controlled temperatures. These trailers are equipped with a cooling system that maintains a consistent temperature throughout the journey, preserving the freshness and quality of the cargo. Refrigerated trailers are essential for transporting food products, pharmaceuticals, and other temperature-sensitive items.
  • Vocational trailers cater to specific industries or applications with unique transportation requirements. These trailers are designed to handle specialized cargo or equipment, making them indispensable in various sectors such as construction, agriculture, and energy. Vocational trailers can include dump trailers for hauling bulk materials like gravel or soil, tanker trailers for transporting liquids such as fuel or chemicals, and utility trailers for carrying equipment and tools to job sites.

At TEC Equipment, we provide a wide range of semi-trailers from top brands like Wabash, BWS, and MAC Trailer. Whether you need a flatbed, a dry van, a refrigerated trailer, or a vocational trailer, our team is committed to offering top-quality trailers that are reliable, durable, and efficient.

Choosing the Right Semi-trailer

Selecting the right semi-trailer is a critical decision that can significantly impact your operations, ensuring efficiency, safety, and cost-effectiveness. Here are a few factors to consider when choosing your trailer:

  • Type of freight: The first factor to consider is the type of freight you plan to haul, as different trailers are designed to accommodate specific types of cargo. If you need to haul cargo that needs to be protected from the elements, a dry van is the way to go. However, if you’re hauling an oversized load with large dimensions, a flatbed is the right choice. Understanding your specific hauling requirements will help you determine the most suitable trailer type.
  • Weight Capacity: It's vital to ensure that the chosen trailer can handle your cargo's weight without being overloaded, which can lead to safety hazards and potential damage to your goods. Compliance with local regulations and weight limits is also essential to avoid legal complications.
  • Axle Type: The axle type determines the trailer’s weight capacity and stability, making it crucial for transporting your cargo safely. For lighter loads, single axle trailers are great because they are generally more maneuverable and easier to tow. For heavier cargo, multiple axles are needed to distribute the weight evenly, providing better stability and preventing strain on the trailer and towing vehicle.
  •  Loading and Unloading: Loading and unloading processes are also important to consider, as certain trailers may have features that facilitate these operations.
  • Other Factors: Other factors include the trailer's durability, maneuverability, and compatibility with your existing fleet. It's crucial to choose a trailer that can withstand the demands of the road, is easy to handle, and integrates seamlessly with your current equipment.

Key Specifications of Semi-trailers

Semi-trailers come in various dimensions and weight limits, each designed to meet specific transportation needs. Understanding these two specifications are crucial when selecting the right trailer for your business: dimensions and weight limits, and payload capacity.

Dimensions and weight limits of semi-trailers:

In the United States, semi-trailers typically adhere to standard dimensions to ensure compatibility with highways and loading docks. The maximum legal length for a semi-trailer is 53 feet, with a maximum width of 8.5 feet. The height limit is usually about 13.5 feet. These limits ensure compliance with transportation regulations and safe passage.

Weight limits vary depending on the type of trailer and the number of axles. A standard tandem axle trailer can typically carry up to 40,000 pounds of cargo. However, individual states may have specific weight restrictions, making it essential to consult local regulations to ensure compliance.

Payload capacity of semi-trailers:

The payload capacity refers to the maximum weight of cargo a semi-trailer can carry. This capacity is determined by subtracting the trailer's tare weight from its gross vehicle weight rating (GVWR). For example, if a trailer has a GVWR of 80,000 pounds and a tare weight of 20,000 pounds, its payload capacity would be 60,000 pounds.

Considering the payload capacity when selecting a semi-trailer is critical to avoid overloading, which can lead to safety hazards, fines, and potential damage to the trailer or goods being transported.

Maintaining Your Semi-trailer: Essential Tips

  • Conduct regular inspections of your semi-trailers, including checking the tires for wear and correct inflation, inspecting the brakes for signs of damage or wear, and examining the lights and electrical system to ensure they are functioning properly.
  • Routine maintenance, such as oil and filter changes, greasing moving parts, and checking and replacing any worn-out parts, is also essential. Regular maintenance not only enhances the performance of your trailers but also helps identify potential issues before they turn into major problems.
  • Ensure cargo is secure during loading and unloading, using straps, chains, or other appropriate restraints. Distribute the weight evenly to maintain balance and stability. Adhere to weight limits and avoid overloading the trailer as it can affect handling and braking capabilities.
  • Follow proper loading and unloading procedures. Use equipment such as dock plates or ramps for a smooth transition between the trailer and the loading dock. Train your employees on safe loading and unloading techniques, including handling hazardous materials if relevant.

By following these maintenance and safety tips, you can keep your semi-trailers in optimal condition, reduce the risk of accidents, and protect your drivers and cargo.

Why Choose TEC Equipment for Your Trailer

With over 48 years of industry experience, we are known for providing our customers with top-notch full-service care. From sale to service we are here to be your partner throughout the entire lifetime of your equipment.

The TEC Network: When you buy with TEC, you instantly gain access to the TEC network. With over 30 locations across 8 states, a trusted TEC location is never too far away. Our size and reach allow us to offer high-quality equipment at competitive prices and convenient locations. From sales to parts and service, we are truly a full-service solution for all of your trailer needs.

Top Brands: Our long-lasting relationships with trusted manufacturers ensure we offer trailers from reputable brands like Wabash, MAC Trailer, BWS, and Cottrell known for their quality and performance.

Parts and Service: Our after-sales support is second to none. From helping you choose the right trailer, stocking the parts you need, warranty coverage, and offering maintenance and repair services, we’re committed to your satisfaction.

Financing: TEC Equipment also provides flexible financing options to make your purchase more affordable. Our finance specialists can help you find the best financing solution tailored to your budget and needs.

Choosing TEC Equipment as your dealership means you're investing in a reliable semi-trailer supported by the expansive TEC network.

Buying a Semi-Truck: Your Comprehensive Guide | The Larson Group

The Complete Semi-Truck Buyer’s Guide for Fleet Managers

Buying a semi-truck is a huge decision for your business. Not only are they an investment, but different trucks are designed to do very different things. If you aren’t aware of your fleet’s exact needs, you could end up making a purchase that you’ll be paying for with much more than money. Whether you’re replacing an aging truck or increasing the scale of your operation, it’s important that you choose the right truck for your fleet’s needs. 

Before you start your search for a new truck, you should make a plan. In this guide, The Larson Group will teach you what you need to consider when searching for your perfect truck, what to look for to avoid bad truck investments, and most importantly, how to get the whole search process rolling. Read on to learn all about the ins and outs of the semi-truck purchasing process. 

First, Define Your Fleet’s Needs

Start your search by outlining exactly what it is you need. With your fleet’s needs in mind, you’ll have a better idea of the type of truck that would work best for you. There are four main questions you need to ask yourself: 

  1. What am I going to use the semi-truck for? 
  2. What sort of payload requirements am I going to have? 
  3. What sort of preferences do my drivers have? 
  4. Should I focus on fuel efficiency or power?

Semi-Truck Applications

The first thing you need to determine is what you’re going to use the truck for. Does your fleet handle a lot of long-haul freight runs, or do you focus on local last-mile-delivery routes? Does your fleet frequently take on specialized loads that require HAZMAT certifications? The answers to these questions will help guide the type of truck you’ll eventually buy. For example, if you mostly handle local or regional delivery jobs, you might opt for a day cab semi-truck.

Your Estimated Payload Needs

Consider what your typical freight is. What is the average weight and cargo size? Do you typically handle extremely heavy or wide loads? You’ll want to pick a semi-truck with a chassis and engine that’s able to pull an average payload for your fleet. A mismatch here could cost you more money in expensive maintenance, additional fuel usage or inefficient route planning.

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Driver Preferences

At the end of the day, your greatest asset is your drivers. Just like any job, if employees aren’t provided with the right equipment for the job, it can lead to frustration. It’s imperative that fleet managers involve drivers in the purchasing of new vehicles to an extent. Talk to your drivers about what they like to see in a semi-truck. Learn what sorts of features they absolutely need to have, and what sorts of things they’d consider nice-to-haves. What technologies that make their lives easier?

Fuel Efficiency vs. Power

Should focus on fuel economy, or more on engine torque and horsepower? It depends on what your trucks are doing. If you do a lot of long-haul or regional routes, you may be focused more on fuel efficiency. However, if your trucks usually haul heavy loads or are involved in specific vocational jobs – you’ll want to research off-highway, PTO and tough terrain capabilities. While a more powerful engine uses more fuel, it may save you money in maintenance costs. Our knowledge team can help spec your trucks to ensure they are designed correctly for the job.

Should You Buy a New Semi-Truck or a Used Semi-Truck?

Like understanding the needs of your fleet, it’s a good idea to understand what different types of semi-trucks can provide before beginning your purchasing journey. It's essential to determine whether you’d rather aim for a new semi-truck or a used semi-truck, giving you a more concrete direction to look during your truck search. 

Your decision here is an important one. Whether a semi-truck is new or used will have a large impact on your maintenance costs, overall budget and driver satisfaction. Think carefully about the pros and cons of each before deciding which type of truck is right for you.

New Semi-Trucks

New semi-trucks will cost more upfront than a used model. The initial cost is the biggest con to buying a new truck. However, new semi-trucks come with some strong pros that are worth consideration: 

Warranty Coverage: Most new trucks come with manufacturer’s warranties covering the truck and composite parts for a certain period of time. Depending on what type of warranty you get, some maintenance services may also be covered. Warranties give you peace of mind that if something does go wrong with the performance of your new truck, you won’t have to spend a lot of money to fix it. 

The Latest Technology: Semi-truck technology has evolved rapidly over the past couple of years with the advent of advanced telematics coupled with AI. Buying a newer model truck means your drivers will have access to all the latest equipment to enhance safety and efficiency. Some of these advancements help drivers avoid accidents and stay safe, while others improve fuel economy and route planning to make sure your trucks get the most profits for their uptime. 

Lower Initial Maintenance Costs: New trucks have not seen the wear and tear that used trucks have and require far less investment in maintenance plans.

Used Semi-Trucks

Buying a used semi-truck will save you money during the initial purchase but may come with some additional costs. When you buy a used semi-truck, there’s a higher risk of maintenance costs since they have been on the road and have wear and tear. Finally, used trucks either come with a more limited warranty or none at all, meaning if something goes wrong, you will need to cover it. 

Despite this, used semi-trucks also come with a lot of pros that make them an appealing option for most fleets:

Lower Initial Costs: Like cars, trucks depreciate over time. This means buying an older used semi-truck will cost less than trying to buy a newer equivalent. Additionally, some older models may not come with all the technology that newer models do. This further cuts down the initial investment as the technology adds extra value. 

Proven Performance: If a truck has been well-maintained over its lifespan, a used truck can continue to deliver strong ROI during its tenure with your fleet. It’s important to check maintenance and dealership records to determine whether a used truck has been taken care of prior to purchase. Select used Peterbilt trucks that meet certain criteria come with the Red Oval Warranty, which provides a very comprehensive protection plan. 

In-Stock and Ready to Roll: Most dealerships that sell used trucks will list the inventory they have at a given location. Unlike newer truck models that sometimes need to be pre-ordered. If you’re looking for a truck to quickly fill a gap in your fleet, used trucks are a solid choice.

Features to Look for in a New Truck

Semi-trucks come with so many bells and whistles these days. With so many different technologies now included in the cab and under the hood, you will need to decide what is an absolute must-have, and what are bonus features that are nice-to-haves. If you’re on a tight budget, this is where you can save on the final cost before making a purchase if you know what you can cut. On the other hand, if you have a little more in the budget and want to treat your drivers, you can pick up a couple of the more luxurious features to make their routes even more comfortable and safe. With a new Peterbilt, you know that you’re getting the latest and greatest in technology, safety and efficiency.

There are a few must-haves that you should look for: 

  • Engine Power: As we’ve already discussed, making sure you have the engine power you need to accomplish the jobs your fleet typically has is an absolute must. Under-specing your engine can have serious consequences that lead to more maintenance, less uptime, and greater costs in both lost ROI and maintenance bills. At the same time, over-specing your engine can lead to increased fuel usage and fuel costs. 
  • Fuel Economy Ratings: Fuel is one of the biggest expenses the average fleet needs to contend with on an annual basis. You can save yourself a huge headache by ensuring you're getting a truck with fuel economy ratings that suit your needs. 
  • Safety Features: The safety of your drivers should be a chief concern when selecting a new truck. Technologies like lane assist, collision warning and mitigation systems, auto-braking, and more are worth the additional costs. Not only do they keep your drivers safe, but they also help avoid costly insurance fees, and downtime and maintenance costs from accidents. 
  • A Comfortable Cab: As drivers ourselves, we at TLG know what a huge difference it makes to drive a long-haul route crammed into the tiniest sleeper cabs versus making the same trek with more room to spread out. Look for cabs with a little extra breathing room, extra storage space, amenities like longer battery life to keep the air conditioning from needing to be recharged overnight, and additional cab modifications like ergonomic handles and dashboards to allow drivers to comfortably adjust while on the road. 
  • Warranty: Review warranty options that are available. Warranties reduce the burden on you if something with the truck goes wrong. A new truck will come with warranty, while used trucks might come with some existing warranty or possibly none at all, depending on the truck.

If you have extra room in the budget, there are some additional nice-to-haves you can include:

Touchscreen Infotainment System: Infotainment systems are designed to increase driver satisfaction. Some decent add-ons to get include upgraded sound systems, Bluetooth connectivity, touchscreen displays, and built-in navigation systems. While not necessary, these small quality-of-life improvements can make a driver’s trip much more pleasant. 

Premium Interior Package: Expanded cabs with better headroom or insulation, and better storage options can make your trucks the envy of trucking fleets across your region. Memory foam mattresses, blackout curtains, and auxiliary heating and cooling units help seal the deal. These are all things drivers consider when deciding which fleet to work for and can play a role when a driver is exploring companies to work for. 

Custom Paint or Chrome Trim: Think of your trucks as highly visible brand ambassadors as they cruise up and down the interstates of the nation. And like any brand ambassador, they need to look the part. Getting extra cosmetic packages like chrome trim or custom paint, leather-bound steering wheels, and accent lighting can help your trucks stand out for greater brand awareness. 

Advanced Tech Add-Ons: We’ve already discussed what sorts of tech needs to be present in the cab to ensure your drivers succeed, but there’s even more tech that can boost efficiency further. Digital dashboards and advanced fleet telematics can help with route planning and ensure drivers are operating as efficiently as possible. Adaptive cruise control and advanced lane-centering can help make the ride much smoother. 

Things to Watch Out for When Evaluating a Semi-Truck for Purchase

When you finally begin to look for a semi-truck, there are several key factors you want to keep an eye out for. These “red flags” and “green flags” are great indicators of how a semi-truck may likely perform after being purchased. This includes predicting whether you may need to invest in maintenance after purchase. If you’ve decided to go for a used semi-truck, paying close attention to these indicators is a must. 

Red Flags: When a Semi-Truck Might Not Be a Good Deal 

The first thing to look at when considering a used semi-truck is its mileage. A truck’s mileage can be an indicator of its condition. However, a higher mileage used truck can still be a good investment if it’s been well-maintained and cared for. The next thing to look for is visible rust or corrosion or irregular tire wear patterns. Finally, check the truck’s maintenance history if you can. Many trucks have maintenance records available, but keep in mind there could be missing information. If the truck came from a well-known, properly maintained fleet, you can have greater peace of mind.

Green Flags: Signs a Semi-Truck is a Great Investment

Just as a lack of a maintenance record can be a warning sign, a detailed maintenance record with a clean history means the semi-truck was likely well cared for. Other things indicating the truck saw plenty of care over its lifetime are up-to-date DOT inspection stickers, upgraded or replaced OEM parts, and a clean title history. 

Give the exterior and interior a thorough look as well. If everything looks clean and there are no visible signs of rust, it’s a good sign the truck is in good condition.

Buy the Latest Addition to Your Fleet at The Larson Group

Looking for a semi-truck? The Larson Group has high-quality pre-owned, all-makes semi-trucks from brands including Peterbilt, Kenworth and Freightliner and more, and of course is a leading dealer in brand new Peterbilts. As truck drivers ourselves, we know just how important it is to have a truck that’s dependable and a perfect fit for your fleet’s needs. That’s why we hold ourselves to a higher standard. 

All our new trucks come with a warranty and there are multiple warranty options for used trucks so you can be rest assured you’re getting a good deal. Additionally, we offer in-house financing with a team who knows your business and offers flexible and competitive financing options. If you need a custom trucking solution, our team of expert engineers can help create a truck solution to your specifications. 

But most importantly, The Larson Group is here to help you succeed. We don’t believe our responsibility ends when you drive your truck off the lot. Our entire network of dealerships and semi-truck maintenance facilities is here to continue offering support to you and your fleet quickly and efficiently so you can keep your business moving forward. 

For more Specialty Semi Trailersinformation, please contact us. We will provide professional answers.