2025 Ram 2500 6.7L I6 Cummins HO Turbo Diesel towing capacity.

The published 2025 6.7L I6 Cummins HO Turbo Diesel towing rows surfaced here run from 19,960 - 20,000 lbs depending on cab, drivetrain, axle ratio, box length, GVWR, GCWR, and the configurations covered on this page.

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Built from the official Ram 2025 towing guide pages used for this engine page. Citations for 6.7L I6 Cummins HO Turbo Diesel available below.

2025 Ram 2500
6.7L I6 Cummins HO Turbo Diesel RANGE
19,960 - 20,000 LBS
PEAK PAYLOAD
2,750 LBS
MAX GCWR
28,010 LBS
TONGUE LOAD CONVENTIONAL / HD
10% / 15%
Conventional vs. 5th-wheel/gooseneck
TRAILERING HARDWARE EQUIPMENT WEIGHT
75 / 70 / 250 LBS
Conventional / gooseneck / 5th wheel
HITCH THRESHOLDS TRAILER LIMITS
23k / 30k LBS
5th-wheel / gooseneck required over this
RATING METHOD STANDARD
SAE J2807
Document-level towing policy
VIEW ALL GUIDE ASSUMPTIONS
GUIDE FINE PRINT

Calculation assumptions for the 2025 Ram 2500 guide.

These note blocks define the published payload, trailering hardware, and limit notes that govern every row in the supported 2025 Ram 2500 towing charts.

FIG. 2025 LOAD Weight Assumptions

Pre-loaded weights baked into the chart

  • Passenger weight: 300 lbs assumed occupant weight.
  • Options weight: 100 lbs assumed factory-installed options.
  • Conventional tongue: 10% of gross trailer weight.
  • 5th-wheel / gooseneck tongue: 15% of gross trailer weight.
FIG. 2025 HITCH Hitch Loading

Hardware weight deducted from payload

  • Conventional hitch: 75 lbs of equipment weight.
  • Gooseneck: 70 lbs of equipment weight.
  • 5th wheel: 250 lbs of equipment weight.
FIG. 2025 CALC Payload Formula

How Ram derives payload from base weight

  • Formula: Payload = GVWR - Base Weight
  • Values: Published as estimated values.
  • Rounding: nearest 10 lbs.
FIG. 2025 LIMIT Commercial / Hitch Limits

Chassis-cab and heavy-trailer thresholds

  • Box-off completion: 80 lbs per foot from end of cab to end of frame.
  • 5th-wheel required over: 23,000 lbs trailer weight.
  • Gooseneck required over: 30,000 lbs trailer weight.
FIG. 2025 STD Rating Standard

SAE J2807 compliance

  • Trailer Weight Rating and Tow Vehicle Trailering Weight are calculated as specified in SAE J2807.
FIG. 2025 WARN Warnings

Manufacturer safety warnings

  • Payload and Trailer Weight Rating are mutually exclusive.
  • GAWRs, GVWRs and GCWRs should never be exceeded.
  • Payload and GAWR should never be exceeded and must account for all of the above weights, including the appropriate trailering equipment and tongue weight.
FIG. 2025 STD Rating Standard

SAE J2807 compliance

  • Trailer Weight Rating and Tow Vehicle Trailering Weight are calculated as specified in SAE J2807.
FIG. 2025 WARN Warnings

Manufacturer safety warnings

  • Payload and Trailer Weight Rating are mutually exclusive.
  • GAWRs, GVWRs and GCWRs should never be exceeded.
  • Payload and GAWR should never be exceeded and must account for all of the above weights, including the appropriate trailering equipment and tongue weight.
FIG. 2025 NOTES Policy Notes

All published notes from the 2025 towing guide

  • Max. Trailer Weight Rating represents a properly equipped base trim configuration. p.6
  • Vehicles with a GVWR of 13,500 and greater are DRW. Vehicles less than 13,500 GVWR are SRW. p.6
  • Payload and Max Trailer Weights are ESTIMATED values. p.6
  • All values are shown in pounds unless otherwise stated. p.6
  • Payload and Max Trailer Weight values are rounded to the nearest 10lb. p.6
  • Payload = GVWR - Base Weight p.6
  • Payload and Trailer Weight Rating are mutually exclusive. p.6
  • GAWRs, GVWRs and GCWRs should never be exceeded. p.6
  • Trailer Weight Rating and Tow Vehicle Trailering Weight are calculated as specified in SAE J2807. p.6
  • Passenger Weight = 300 lb p.6
  • Options Weight = 100 lb p.6
  • Trailering Equipment Weight: 75 lb for Conventional Hitch, 70 lb for Gooseneck and 250 lb for 5th Wheel. p.6
  • Tongue weight: 10 percent of the gross trailer weight for Conventional Hitch, 15 percent of the gross trailer weight for a 5th Wheel or Gooseneck hitch. p.6
  • Payload and GAWR should never be exceeded and must account for all of the above weights, including the appropriate trailering equipment and tongue weight. p.6
  • Box Off Body Completion Weight = 80 lb per foot from end of cab to end of frame p.7
  • A fifth-wheel hitch is required for trailers over 23,000 lbs. p.7
  • A Gooseneck hitch is required for trailers over 30,000 lbs. p.7
NOTES: Guide-level assumptions apply to all published towing and payload values. Individual configurations may have additional row-level constraints.
Towing data

2025 6.7L I6 Cummins HO Turbo Diesel towing capacity by configuration

Each row below is one published configuration from the 2025 Ram towing guide, showing towing capacity, payload, GVWR, and GCWR.

RAM 2500 - 4X2 - CREW CAB - ST - 6'4'' BOX
3.42 9,900 lbs 2,460 lbs 27,870 lbs 19,960 lbs 8-Speed ZF Powerline · ST
3.42 10,000 lbs 2,560 lbs 27,870 lbs 19,960 lbs 8-Speed ZF Powerline · ST
3.42 10,190 lbs 2,750 lbs 27,870 lbs 19,960 lbs 8-Speed ZF Powerline · ST
RAM 2500 - 4X2 - CREW CAB - ST - 8' BOX
3.42 10,000 lbs 2,460 lbs 28,010 lbs 20,000 lbs 8-Speed ZF Powerline · ST
3.42 10,190 lbs 2,650 lbs 28,010 lbs 20,000 lbs 8-Speed ZF Powerline · ST
3.42 9,900 lbs 2,350 lbs 28,010 lbs 19,980 lbs 8-Speed ZF Powerline · ST
Compare

Other 2025 4x2 engines

These comparisons stay within the same published year slice so separate gas/diesel or drivetrain groupings are not blended together.

Highest Capacity
6.4L V8 HEMI MDS
Range: 14,920 - 17,750 lbs
Peak published max 17,750 LBS
Technical Audit

Data sources

These citations show the Ram guide pages used to build the 2025 6.7L I6 Cummins HO Turbo Diesel engine page.

Show source pages for the 6.7L I6 Cummins HO Turbo Diesel page
DOC_ID: ram-2500 DOCUMENT BASIS

2025 Ram 2500 2WD Towing Guide

Audit Scope PAGES: 2, 4