What's the difference between payload and GVWR?

GVWR is the maximum weight your vehicle is rated to weigh when fully loaded, including the vehicle itself, all passengers, cargo, fuel, and any tongue weight from a trailer. Payload is what's left over for you to add. Payload = GVWR minus curb weight. Your door sticker lists both.

How accurate is the per-axle estimate?

It's a planning estimate, not a replacement for a real scale. Passenger weight defaults to a 55/45 front-rear split, gear assumes 20/80 front-rear (cargo area), and mods are biased by location. For trips at the edge of GVWR, drive to a CAT scale and weigh each axle individually.

Does a heavier-duty truck solve the problem?

Often, yes. Going from a half-ton to a 3/4-ton typically adds 800-1,500 lbs of payload, plus stronger brakes, axles, and tires. For builds with steel bumpers, a rear drawer system, RTT, and full water tanks, a 3/4-ton platform is usually the right answer.

How much payload does a typical overland build eat?

On a midsize truck or Wrangler, a full build (steel bumpers front and rear, winch, sliders, RTT, awning, drawer system, fridge, dual battery) easily adds 700-900 lbs. That's before passengers, fuel, water, or any gear. Many built Wranglers and Tacomas live within 100-200 lbs of GVWR.

What about GCWR for towing?

GCWR is Gross Combined Weight Rating, the max for vehicle + trailer combined. Even if your tongue weight is within payload, the trailer's full weight must stay under GCWR. Diesel 3/4-tons usually have 25,000+ lb GCWRs; built Wranglers can be 9,000-11,000 lbs.

Interactive Tool

Overlanding Payload Calculator

How much weight can your rig actually carry? Add up your passengers, build mods, fuel, and trailer tongue weight, then see exactly how much payload you have left before you hit GVWR.

Payload is GVWR minus curb weight, the total cargo and passenger load your truck is rated to carry. A built overland Jeep or midsize truck typically has 1,100-1,500 lbs of payload, and steel bumpers, a winch, sliders, an RTT, and drawers easily eat 600-800 lbs of that before you load people, gear, or fuel. Stay under GVWR or your brakes, tires, and axles are rated below your load.

HOW IT WORKS

Pick Your Rig

Choose your vehicle to pull in real GVWR, curb weight, and factory payload

Add Build & Gear

Toggle bumpers, winch, RTT, drawers, and enter passengers, fuel, and trailer tongue weight

See Your Margin

Get total loaded weight, payload used, per-axle estimate, and a GVWR verdict

Step 1, Pick Your Rig

We use the manufacturer's GVWR and curb weight to set your payload ceiling.

Vehicle

Curb

5,050 lb

GVWR

6,250 lb

Payload

1,200 lb

Real-world payload on your door sticker may be 100-300 lbs lower depending on options. Use that number if you have it.

Step 2, People, Gear & Fuel

Passengers (including driver): 2

Estimated 330 lb at 165 lb each

Loose gear & food (lbs): 150

Cooler, kitchen, clothing, recovery kit, tools. A weekend trip for 2 averages 120-200 lbs.

Fuel on board: 20 gal (126 lb)

Gasoline is ~6.3 lb/gal. A full 22 gal tank is ~140 lb.

Trailer tongue weight: 0 lb

10-15% of total trailer weight rides on the hitch and counts against payload. A 4,000 lb trailer = ~400-600 lb tongue.

Step 3, Build Mods

Anything bolted to the rig after curb weight counts against payload. Toggle what's on your truck.

Steel front bumper

+120 lb

Winch (12K w/ synthetic line)

+85 lb

Steel rear bumper + tire carrier

+150 lb

Rock sliders

+90 lb

Full skid plate set

+80 lb

2.5" suspension lift + larger shocks

+60 lb

5x larger tires (37s) vs stock

Why Overloaded Rigs Fail on Trail

Brakes Cook

GVWR is partly a brake rating. Overload by 20% and your stopping distance on a downhill can double, fade fast on long descents.

Tires Blow

Each tire has a load index. Four 2,400 lb tires give you 9,600 lb total, but stacked weight on the rear axle blows that limit first.

Suspension Sags

OEM springs are spec'd for OEM payload. Lifted trucks loaded with steel bumpers and an RTT sag, bottom out, and chew up shocks.

MPG & Range Drop

Every 100 lbs over base curb costs about 1% MPG. Add 800 lbs of build and you're paying 8% more per mile to get nowhere faster.