RAM 3500: slide-on camper payload

RAM 3500 has a recorded GVM of 4,495 kg to 5,352 kg. Kerb mass is 3,700 kg; payload calculated as GVM minus that mass is 795 kg to 1,652 kg across 2 recorded variants. After a stated 390 kg allowance for occupants, accessories and gear, the remaining camper load allowance is 405 kg to 1,262 kg. [1]

What the allowance assumes

We subtract 160 kg for occupants, 150 kg for accessories and 80 kg for luggage and gear: 390 kg total. These are assumptions, not measured weights. Published mass bases differ; some already include a driver or fuel. Avoid counting those twice when entering your actual weights.

This is remaining mass allowance, not an approved camper dry weight. Allow for any excluded tray or body, mounting frame, water and camper equipment. No camper fitment verdict is available without verified camper mass, dimensions and centre of gravity.

Change the assumptions in the weight calculator. Enter your occupant, accessory and gear weights there; these assumptions are not automatically filled.

Recorded variants, highest calculated payload first

Model years: 2025. Match your exact variant and mass basis. “Verified” describes the research record, not approval for a camper.

All figures in kilograms unless stated. Sources and review status apply to each row.
Variant / yearGVM / GCMKerb massPayload / allowanceTray / axle limitsSource and caveats
Laramie Cummins High Output2025 · crew cab · 4x4 part-timeCalculate Laramie Cummins High Output 20255,352 kgGCM: 14,433 kg3,700 kgPublished kerb weightCalculated: 1,652 kgPublished payload: 1,652 kgAfter 390 kg: 1,262 kgArithmetic: matches published payloadPickup tub; a tray conversion needs new mass and dimensions.Front axle limit: 2,721 kg
Rear axle limit: 3,175 kg		[1] RAM 2500 and 3500 Laramie Cummins High Output SpecificationOfficial current brochure: Laramie Cummins High Output 6'4" tubsource verifiedLoad body as published: 6'4" tub. Manufacturer drivetrain description: Part-time 4x4 with low range. Ball-coupled braked towing is 4,500 kg with genuine RAM 70 mm hardware. Up to 8,000 kg gooseneck towing is separately specified with genuine hardware and air-braked trailer; verify all fitted labels. Tub-compatible camper only unless engineered tray conversion is verified.Official RAM specification brochure, hosted on a dealer resource CDN rather than ramtrucks.com.au. Verified directly, including the optional derating of the 3500 to 4,495 kg GVM and 795 kg payload.
Laramie Cummins HO – 4,495 kg GVM derate2025 · crew cab · 4x4 part-timeCalculate Laramie Cummins HO – 4,495 kg GVM derate 20254,495 kgGCM: 14,433 kg3,700 kgPublished kerb weightCalculated: 795 kgPublished payload: 795 kgAfter 390 kg: 405 kgArithmetic: matches published payloadPickup tub; a tray conversion needs new mass and dimensions.Front axle limit: 2,721 kg
Rear axle limit: 3,175 kg		[1] RAM 2500 and 3500 Laramie Cummins High Output SpecificationOfficial optional derated configuration: Laramie Cummins HO – 4,495 kg GVM derate 6'4" tubsource verifiedLoad body as published: 6'4" tub. Manufacturer drivetrain description: Part-time 4x4 with low range. Optional 4,495 kg GVM must be nominated before landing. The brochure does not explicitly state whether the standard 14,433 kg GCM changes after derating; confirm on the compliance plate. Ball-coupled braked towing is 4,500 kg with genuine RAM 70 mm hardware. Up to 8,000 kg gooseneck towing is separately specified with genuine hardware and air-braked trailer; verify all fitted labels. Tub-compatible camper only unless engineered tray conversion is verified.Official RAM specification brochure, hosted on a dealer resource CDN rather than ramtrucks.com.au. Verified directly, including the optional derating of the 3500 to 4,495 kg GVM and 795 kg payload.

Rear axle headroom cannot be calculated from these records: the rear GAWR is a limit, but the kerb front/rear axle split is not recorded. A weighbridge measurement of each axle is needed.

GVM upgrade arithmetic

If GCM stays unchanged, each extra kilogram of loaded vehicle mass leaves one kilogram less under GCM for a trailer. The RAM 3500 table uses published GCM minus hypothetical GVM; it does not certify an upgrade or override the published towing limit. No certified upgrade figures are recorded. The increments below are illustrative scenarios, not available or approved upgrades. They assume the vehicle is loaded to the stated hypothetical GVM and GCM stays unchanged.

Combination-mass allowance for a trailer at full GVM, before towing and other limits
VariantPublished GCMAt stock GVMGVM +150 kgGVM +300 kgGVM +500 kgPublished braked towing limit
Laramie Cummins High Output · 2025 · crew cab · 4x4 part-timeVariant and source [1]14,433 kg9,081 kgGVM 5,352 kg8,931 kgHypothetical GVM 5,502 kg8,781 kgHypothetical GVM 5,652 kg8,581 kgHypothetical GVM 5,852 kg4,500 kg
Laramie Cummins HO – 4,495 kg GVM derate · 2025 · crew cab · 4x4 part-timeVariant and source [1]14,433 kg9,938 kgGVM 4,495 kg9,788 kgHypothetical GVM 4,645 kg9,638 kgHypothetical GVM 4,795 kg9,438 kgHypothetical GVM 4,995 kg4,500 kg

A negative result means the hypothetical vehicle mass already exceeds GCM. A positive result is not permission to tow that mass: the manufacturer's towing rating, towbar, towball load, axle limits and actual certification also apply.

Manufacturer sources and currency

These are stored research figures, not a live check of current specifications. Access dates below identify when each source was recorded.

  1. RAM 2500 and 3500 Laramie Cummins High Output Specification — RAM Trucks Australia. Accessed 2026-08-18.

    Official RAM specification brochure, hosted on a dealer resource CDN rather than ramtrucks.com.au. Verified directly, including the optional derating of the 3500 to 4,495 kg GVM and 795 kg payload.

RAM 3500 payload questions

What is the payload of a RAM 3500?

RAM 3500 has a recorded GVM of 4,495 kg to 5,352 kg. Kerb mass is 3,700 kg; payload calculated as GVM minus that mass is 795 kg to 1,652 kg across 2 recorded variants. After a stated 390 kg allowance for occupants, accessories and gear, the remaining camper load allowance is 405 kg to 1,262 kg.

How much can a RAM 3500 carry with a slide-on camper?

The calculated allowance is 405 kg to 1,262 kg after 160 kg for occupants, 150 kg for accessories and 80 kg for gear. Any tray or body excluded from the recorded mass, camper water and camper equipment still have to be allowed for. This is not a camper fitment verdict.

Does a GVM upgrade reduce a RAM 3500's towing capacity?

If GCM stays unchanged, each extra kilogram of loaded vehicle mass leaves one kilogram less under GCM for a trailer. The RAM 3500 table uses published GCM minus hypothetical GVM; it does not certify an upgrade or override the published towing limit.

Check your actual weights in the calculator

This tool provides an estimate only. Final suitability depends on your exact vehicle variant, compliance plate, manufacturer specifications, towbar rating, axle limits, tyre ratings, accessories, real loaded weights and certified weighbridge results. Beyond RV weighs your vehicle at the factory before build, and those figures decide the final answer.

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