Off-road pickups are built to haul gear into remote places, but payload capacity is often misunderstood. Loading a truck beyond its design limits can lead to tire failure, poor handling, and dangerous situations on the trail. Understanding your vehicle’s weight ratings, tire load limits, and the effects of modifications is essential for safe off-road driving.
Where to Find Your Truck’s Weight Ratings
According to the NHTSA brochure on tire safety, every vehicle has a tire information placard or certification label that lists the vehicle capacity weight (VCW), front and rear gross axle weight ratings (GAWR), and recommended tire size and pressure. The placard is permanently attached to the vehicle door edge, door post, glove-box door, or inside the trunk lid. You can also find these numbers in the owner’s manual.
The vehicle capacity weight is the maximum combined weight of occupants and cargo the vehicle is designed to carry. The GAWR tells you the maximum weight each axle system can support. Staying within these limits is critical for safe handling and tire life.
Calculating Available Payload for the Bed
Because the vehicle capacity weight covers occupants and cargo together, the people in the cab count against the same limit as the gear in the bed. Add up passengers, cab cargo, bed load and anything mounted on the truck, and keep the total within the VCW and each axle within its GAWR.
The NHTSA brochure says underinflated tires and overloaded vehicles are a major cause of tire failure, and its checklist says not to overload your vehicle and to check the placard or owner’s manual for the maximum recommended load.
Tire Load Limits and the Door Placard
The NHTSA tires page says the correct tire pressure for your truck is the one listed on the Tire and Loading Information Label on the driver’s side door edge or post, not the maximum pressure molded on the tire sidewall. Newer vehicles have a tire pressure monitoring system (TPMS) that illuminates a warning on the dashboard when a tire is significantly underinflated. However, the NHTSA tires page notes that these systems only activate when pressure drops well below the recommended level, so a monthly manual check with a gauge is still necessary.
Each tire also has a load index, a number that indicates how much weight it can support. You can find this on the tire sidewall or in the owner’s manual. If you replace your tires, the NHTSA advises buying tires that are the same size as the original equipment or another size recommended by the manufacturer. Changing tire size can alter load capacity and handling. Many off-road pickups are fitted with all-terrain tires that balance on-road comfort with off-road capability, but the same load-rating principles apply.
How Extra Weight Affects Fuel Economy
According to fueleconomy.gov, an extra 100 pounds in your vehicle can reduce fuel economy by about 1 percent. The effect is greater on smaller vehicles because the extra weight is a larger percentage of the vehicle’s total weight. For off-road pickups already carrying heavy gear, every pound counts. Removing unnecessary items from the bed when not needed helps save fuel.
Larger Tires, Lifts, and Handling Risks
BFGoodrich’s off-road driving guide warns that fitting larger-than-stock tires often requires a lift kit and may involve modifying brake lines, steering geometry, and suspension components. The guide adds that lifting and bigger tires raise the center of gravity and change handling, which can increase rollover risk, particularly on side hills and in emergency maneuvers on pavement.
When you change tire size, the manufacturer’s recommended pressures no longer apply. Larger tires typically need less air pressure to carry the same load. BFGoodrich stresses that you should never guess the correct pressure; always consult a tire professional to calculate the right PSI for your upgraded setup. Incorrect pressure can lead to poor handling, uneven tread wear, and tire failure.
Pre-Trip Checklist for Off-Road Pickup Loads
Before heading off-road, use this checklist based on guidance from NHTSA and BFGoodrich. For a broader inspection routine, see our Pre-Trip Inspections guide.
- Check the placard: Locate the recommended tire pressure and vehicle capacity weight on the door placard or owner’s manual (NHTSA).
- Measure tire pressure cold: Tires must be checked after the vehicle has been parked for at least three hours. Use a reliable gauge (NHTSA).
- Weigh your load: Ensure the total weight of passengers and cargo does not exceed the VCW. Verify that the load on each axle stays under the GAWR (NHTSA).
- Inspect tires: Look for cuts, bulges, and embedded objects. BFGoodrich recommends inspecting tires before and after every trail run.
- Confirm tire size and pressure if modified: If you have upgraded to larger tires, consult a tire professional for the correct inflation pressure (BFGoodrich).
Frequently asked questions
How do I find my truck’s payload capacity?
Look for the Tire and Loading Information label on the driver’s side door edge or door post. The label lists the vehicle capacity weight, which is the maximum combined weight of occupants and cargo. Passengers and cargo both count against that number. The NHTSA brochure also lists the door post, glove-box door and trunk lid as possible label locations.
What happens if I exceed the gross axle weight rating (GAWR)?
The GAWR is the maximum weight an axle system is designed to carry. NHTSA warns that overloaded vehicles are a major cause of tire failure and tells drivers not to overload the vehicle, so redistribute or remove weight until each axle is within its rating.
Do larger tires reduce my truck’s payload?
The rating on your placard is set by the vehicle manufacturer, so check your owner’s manual and a tire professional before changing tire size. BFGoodrich notes that when you change tire size, the original recommended pressures no longer apply, and that lifting the truck to fit larger tires raises the center of gravity, which can affect handling and increase rollover risk.
For more guidance on selecting and equipping an off-road truck, see our Off-Road Trucks category page, the Off-Road Vehicles section, and the article on Choosing an Off-Road Vehicle.
