Readers ask: What Is Each Axle Allowed To Weigh On A Tractor Trailer?


Regulations concerning oversize/overweight vehicles apply to every public road in the United States, with ramifications that affect every aspect of our domestic and global economies. These regulations are in place to keep our infrastructure intact, maintain a safe roadway for everyone who uses it, and provide a standard for our economy to establish itself upon.

Primary Considerations

Before placing a load on a vehicle, there are several factors to consider, including the combined effect of the load and vehicle configuration. It is critical to consider these factors ahead of time so that a proper plan for transporting the load can be made.

Axle and Equipment Regulations

The more axles and space (more area) added to the truck and trailer, the more load weight (force) is allowed on the truck and trailer. For example, a legally dispersed 5 axle rig would have a maximum axle weight of 12000 lbs on the steer axle, 3400 lbs on the drive tandem axles, 17000 lb on the fourth axle, and 17000 lb on the fifth axle.

Axle Weight Calculator has taken into account each state’s specific rules and regulations, so simply enter your vehicle configuration and the states you’ll be passing through to see if your oversize load is legal. You can change the weight distribution by changing the weight of each axle or the axle spacing.

Federal Regulations

All loads traveling on interstate highways must adhere to the Federal Bridge Formula, and if a load deviates from these declared values, a permit is required. The federal government does not issue permits for loads, leaving it to the states to decide whether or not to allow the movement of those loads.

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State and Provinces Regulations By State

Every state in the United States and every province in Canada has its own regulations regarding oversize/overweight loads, and knowing them can help you get the extra weight you need to move a load. For example, Texas allows a single axle limit of 25,000 pounds.


The most important factors to consider are axle weights, axle spacings, tire width, and manufacturer’s ratings, which has considered and researched for you.

How much weight can I have on each axle?

35550. (a) The gross weight of any one axle must not exceed 20,000 pounds, and the gross weight of any one wheel, or wheels, supporting one end of an axle must not exceed 10,500 pounds.

What is the maximum weight allowed on a tractor drive axle?

12,000 pounds per axle, or 6,000 pounds per tire; 34,000 pounds per axle, or 4,250 pounds per tire; 34,000 pounds per axle, or 4,250 pounds per tire; 34,000 pounds per axle, or 4,250 pounds per tire; 34,000 pounds per axle, or 4,250 pounds per tire; 34,000 pounds per axle, or 4,250 pounds per tire; 34,000 pounds per axle, or 4,250 pounds per tire; 34,000

What is the legal weight limit for a tractor trailer?

Maximum gross vehicle weights and axle loads are regulated by federal law on the Interstate System, with federal limits of 80,000 pounds gross vehicle weight, 20,000 pounds on a single axle, and 34,000 pounds on a tandem axle group, as well as length and width standards on the National Network (NN).

How do you calculate weight per axle?

How to Work Out Your Axle Weight

  1. Add the total weight of the load you’ll be carrying to the total trailer weight.
  2. Divide the total weight of the load and trailer by the total number of tandem axles, including the load bearing axle.
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How do I calculate my axle weight?

To calculate the moment for each component and item, multiply the center of gravity distance by the weight, then add all of the moments and divide by the wheelbase to get the weight on the rear axle. Finally, subtract the rear axle weight from the total weight to get the front axle weight.

How many seconds is a safe following distance for a 18 wheeler?

What is the proper following distance for truck drivers? The proper following distance for truck drivers is seven to eight seconds, which you should strive to maintain and be ready to increase to double that amount if the weather worsens.

How many pounds can a 53 foot trailer hold?

With a few exceptions, the weight limit for a 53-foot trailer in the United States is 80,000 pounds, divided as follows: 12.000 pounds on the steer axle, 34000 pounds on the drive axles, and 34.000 pounds on the trailer tandems. The amount they can load is determined by subtracting the truck’s empty weight from 80,000 pounds, which in most cases is 45.000 pounds.

How much weight can a 53 foot trailer carry?

53-foot trailers are the most common dry vans on the road, with typical dimensions of 53u2032 x 8u2032 6u201d x 8u2032 6u201d (lwh) and the ability to carry up to 45,000 pounds of freight and 26 standard pallet positions across their floor space.

What weight requires a DOT number?

If you operate in interstate commerce and meet the following criteria, a USDOT Number is required: You have vehicles that weigh more than 10,000 pounds (GVWR, GCWR, GVW, or GCW) You transport between 9 and 15 passengers (including the driver) for compensation, whether direct or indirect.

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How many tons can a 18 wheeler carry?

A legally operating 18 wheeler weighs 80,000 pounds or 40 tons if it is not oversized or carrying weight beyond legally established limits.

How much weight can you haul without a dot?

If you have a vehicle with a gross vehicle weight rating (GVWR) of 10,001 lbs. or more, a DOT number is required. If you are being paid to transport 9 to 15 people, a DOT number is required. If you are operating a vehicle that can haul 16 or more people, a DOT number is required.

What is the axle weight?

Axle Weight u2013 the maximum weight that can be placed on a single axle or a group of axles; Axle Spacings u2013 the distance between axles measured from one axle hub to the next.

How much weight can a 2 axle trailer carry?

The load rating of a utility trailer’s axle is the most important factor in determining the trailer’s weight limit. Trailer axles are rated based on their diameter, which helps determine their overall strength. The thicker the axle, the more weight it can carry, and most axles can carry between 1,000 and 10,000 pounds.

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