2015 Ram 2500/3500 HD
Ram Trucks has introduced a revised, High Output 6.7L Cummins turbodiesel for the 2015 model year, peaking at 865 lb-ft. The H.O. model is available for the Ram 3500, while the 2500 model retains the 370 horsepower, 800 lb-ft version of the Cummins. The standard engine is backed by Chrysler's 68RFE, while the H.O. transmits power via the medium duty Aisin six speed automatic. The G56 manual transmission remains optional, but comes with engine output detuned to 660 lb-ft; Ram remains the only manufacturer to offer a manual gear box. Furthermore, all of Ram's pickups now feature SAE J2807 certified tow ratings.
| Ram 2500 HD | Ram 3500 HD | |
| Max Horsepower | 370 @ 2,800 rpm | 385 @ 2,800 rpm |
| Max Torque | 800 lb-ft @ 1,700 rpm | 865 lb-ft @ 1,700 rpm |
| Max GVWR | 10,000 lbs | 14,000 lbs |
| Max GCWR | 25,300 lbs | 37,900 lbs |
| Max Payload | 3,170 lbs | 6,720 lbs |
| Max Conventional Tow | 17,970 lbs | 17,970 lbs |
| Max 5th Wheel Tow | 17,970 lbs | 30,000 lbs |
2015 Chevy SIlverado, GMC Sierra 2500/3500 HD
The GMC Sierra and Chevrolet Silverado HD models remain relatively unchanged for the 2015 model year, still offering the 397 horsepower, 765 lb-ft Duramax diesel matched with the Allison 1000 transmission. The 3500 model offers the highest in-class bumper pull tow rating with an astonishing 19,600 lbs. The GMC Sierra receives a new trim package, the All Terrain HD, which finishes the truck off with a number of aesthetic upgrades and plenty of creature comforts. GM's HD models have yet to utilize SAE J2807 criteria in determining their maximum tow ratings, but are expected to adopt the new standards upon the platforms next major redesign.
| Silverado/Sierra 2500HD | Silverado/Sierra 3500HD | |
| Max Horsepower | 397 @ 3,000 rpm | 397 @ 3,000 rpm |
| Max Torque | 765 @ 1,600 rpm | 765 @ 1,600 rpm |
| Max GVWR | 10,000 lbs | 13,025 lbs |
| Max GCWR | 24,500 lbs | 30,500 lbs |
| Max Payload | 3,501 lbs | 5,817 lbs |
| Max Conventional Tow | 14,500 lbs | 19,600 lbs |
| Max 5th Wheel Tow | 17,900 lbs | 23,200 lbs |
2015 Ford Super Duty
The workhorse of Ford's Super Duty lineup, the F-450, is revamped for the 2015 model year to deliver increased tow ratings, which have been determined under the SAE's J2807 criteria. Neither the F-250 nor F-350 use the SAE standard, but are expected to do so in the next major platform upgrade. The 6.7L Power Stroke has also been revised, increasing performance by 40 horsepower and 60 lb-ft of torque. The twin sequential turbocharger has been replaced with a more efficient, larger single turbo, which contributes to the engine's power increase. The Power Stroke comes standard with Ford's TorqShift six speed automatic transmission.
| Ford F-250 | Ford F-350 | Ford F-450 | |
| Max Horsepower | 440 @ 2,800 rpm | 440 @ 2,800 rpm | 440 @ 2,800 rpm |
| Max Torque | 860 @ 1,600 rpm | 860 @ 1,600 rpm | 860 @ 1,600 rpm |
| Max GVWR | 10,000 lbs | 14,000 lbs | 14,000 lbs |
| Max GCWR | 23,500 lbs | 35,000 lbs | 40,400 lbs |
| Max Payload | 4,040 lbs | 7,050 lbs | 5,300 lbs |
| Max Conventional Tow | 14,000 lbs | 19,000 lbs | 19,000 lbs |
| Max 5th Wheel Tow | 16,600 lbs | 26,500 lbs | 31,200 lbs |
2015 Best in Class Diesel*
| 3/4 Ton Diesel Pickup (class 2, 6,001 - 10,000 lb GVWR) |
1 Ton Diesel Pickup (class 3, 10,001 - 14,000 lb GVWR) |
|
| Best in Class Horsepower | Ford 6.7L Power Stroke | Ford 6.7L Power Stroke |
| Best in Class Torque | Ford 6.7L Power Stroke | 6.7L Cummins |
| Best in Class GCWR | Ram 2500HD | Ford F-450 |
| Best in Class Payload | Ford F-250 | Ford F-350 |
| Best in Class Conv. Tow | Ram 2500HD | Sierra/Silverado 3500HD |
| Best in Class 5th Wheel Tow | Ram 2500HD | Ford F-450 |
* Diesel Hub's "Best-in-class" recognizes diesel equipped pickups only - all capacities and ratings for gasoline equipped trucks have been omitted. "Class" refers to class II and class III pickup categories respectively.
Sources: www.ford.com, www.chevrolet.com, www.gmc.com, www.ramtrucks.com