2024 Peterbilt 579 Ultraloft Review. 579 tractor with 80 double bunk ultraloft sleeper with epiq aero package. The new model 579 ultraloft is the first major redesign for the truck by peterbilt since its debut in 2012.

Of storage and the largest mattresses in the industry. Specs include 18 air slide fifth wheel, 13k front axle, 38k rear axle with 2.79 ratio, peterbilt flex air suspension, air disc brakes all.