Used Peterbilt Conventional Sleeper Trucks For Sale in Mississippi

Used Peterbilt conventional sleeper trucks are built for over-the-road freight, team operations, and regional lanes where driver comfort matters as much as drivetrain efficiency. In this category, buyers will usually see Peterbilt 579 models most often, along with some 567 sleeper configurations. The 579 is the aerodynamic highway tractor in the Peterbilt lineup, while the 567 sleeper is typically chosen when the job mixes highway miles with more demanding vocational or mixed-service work. Both are conventional sleeper trucks, also called sleeper tractors, with a long hood layout and an integrated bunk area for overnight use.

The biggest buying decisions usually come down to sleeper size, engine choice, transmission spec, and rear axle ratio. Common Peterbilt sleeper setups include 72-inch to 80-inch high-roof sleepers such as the UltraLoft or Unibilt configurations, often with an upper bunk for team or occasional second-driver use. Late-model used units commonly carry PACCAR MX-13 or Cummins X15 engines in the 450 to 455 horsepower range, paired with automated transmissions. For highway freight, 2.64, 2.79, or 2.85 rear axle ratios are common because they help keep cruise RPM down and support fuel economy. A 3.70 ratio, more common in a 567, is better suited to heavier starts, mixed terrain, or operations that need stronger low-speed pulling power.

A buyer comparing used Peterbilt conventional sleepers should pay close attention to wheelbase, fifth wheel type, and aero package. Wheelbases around 238 to 240 inches are common on fleet-spec highway tractors and can affect trailer swing clearance, bridge law flexibility, and ride quality. Air slide fifth wheels add versatility if trailer lengths and kingpin settings vary across the operation. Fairings, cab extenders, horizontal exhaust, quarter fenders, and low-profile 22.5 tires are all common on fuel-conscious road specs. Disc brakes, air ride suspension, aluminum wheels, and dual aluminum fuel tanks are also desirable features because they can improve stopping consistency, ride comfort, payload efficiency, and corrosion resistance.

In Mississippi, many buyers look for used Peterbilt sleeper trucks that can handle long interstate runs, hot weather, and high annual mileage without giving up driver retention. Air conditioning performance, bunk HVAC operation, interior wear, and idle management features deserve a close look on any used sleeper. Service history matters, especially for emissions components, automated transmission calibration, and engine brake performance. Peterbilt remains a strong choice in the used sleeper market because the brand holds value well, offers a driver-friendly cab, and has broad appeal for fleets and owner-operators who want a highway tractor with premium fit and finish.