2018 Ram 2500 5.7L V8 CNG towing capacity.

The published 2018 5.7L V8 CNG towing rows surfaced here run from 6,820 - 7,680 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 2018 towing guide pages used for this engine page. Citations for 5.7L V8 CNG available below.

TONGUE LOAD CONVENTIONAL / HD

10% / 15%

Conventional vs. 5th-wheel/gooseneck

TRAILERING HARDWARE EQUIPMENT WEIGHT

75 / 70 / 250 LBS

Conventional / gooseneck / 5th wheel

RECEIVER LIMIT CLASS V MAX TONGUE

1,800 LBS

Published receiver-hitch cap for this guide

RATING METHOD STANDARD

SAE J2807

Document-level towing policy

VIEW ALL GUIDE ASSUMPTIONS

GUIDE FINE PRINT

Calculation assumptions for the 2018 Ram 2500 guide.

These note blocks define the published payload, trailering hardware, and limit notes that govern every row in the supported 2018 Ram 2500 towing charts.

 FIG. 2018 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. 2018 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. 2018 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. 2018 LIMIT Commercial / Hitch Limits  Chassis-cab and receiver limits   Box-off completion:   80 lbs per foot from end of cab to end of frame.
 Class V receiver max tongue:   1,800 lbs.
 Heavy-trailer thresholds:  
this guide does not publish 5th-wheel / gooseneck trigger weights.
 

FIG. 2018 STD Rating Standard

SAE J2807 compliance

Trailer Weight Rating and Tow Vehicle Trailering Weight are calculated as specified in SAE J2807.

FIG. 2018 WARNWarningsManufacturer 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. 2018 STD Rating Standard

SAE J2807 compliance

Trailer Weight Rating and Tow Vehicle Trailering Weight are calculated as specified in SAE J2807.

FIG. 2018 WARNWarningsManufacturer 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. 2018 NOTES Policy Notes

All published notes from the 2018 towing guide

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
Tongue weight: 10 percent of the gross trailer weight for Conventional Hitch, 15 percent of the gross trailer weight for 5th Wheel or Gooseneck hitch. p.6
Trailering Equipment Weight: 75 lb for Conventional Hitch, 70 lb for Gooseneck and 250 lb for 5th Wheel. 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.6
The maximum tongue weight for Class V (receiver hitch) is limited to 1,800 lb. p.6
Maximum Capability p.6

Towing data

2018 5.7L V8 CNG towing capacity by configuration

Each row below is one published configuration from the 2018 Ram towing guide, showing towing capacity, payload, GVWR, and GCWR.

CREW CAB LONG BOX 4X2 CNG
3.73	9,200 lbs	1,850 lbs	15,000 lbs	7,180 lbs	6-Speed Auto 66RFE · CNG
CREW CAB, LONG BOX, 4X4, CNG
3.73	9,200 lbs	1,490 lbs	15,000 lbs	6,820 lbs	6-Speed Auto 66RFE · CNG
REG CAB LONG BOX 4X2 CNG
3.73	9,200 lbs	2,350 lbs	15,000 lbs	7,680 lbs	6-Speed Auto 66RFE · CNG
REG CAB LONG BOX 4X4 CNG
3.73	9,200 lbs	1,970 lbs	15,000 lbs	7,300 lbs	6-Speed Auto 66RFE · CNG