How many holes do you need to slide tandems?

To shift weight off the drive axles and onto the trailer tandems, you slide the trailer tandems forward toward the front of the truck. With 6 inch spacing you're moving 400 pounds per hole so you need to move 4 holes to shift a minimum of 1,400 pounds (400 x 4 = 1,600).
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How much weight does each hole on tandem slide change?

You can estimate that you will move 250 pounds per hole for 4 inch spacing, and 400 pounds per hole for 6 inch spacing. This will help you estimate how many holes you'll have to slide the trailer tandems to move the proper amount of weight necessary in order to get the axle weights legal.
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What hole should tandems be in for California?

The load is balanced, the drive axles weight 33,519 and the tandem axle weighs 33,595. The tandems are configured for California (1st hole).
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What is California tandem law?

The gross weight of each set of tandem axles shall not exceed 34,000 pounds and the gross weight of the two consecutive sets of tandem axles shall not exceed 68,000 pounds. (c) The distance between axles shall be measured to the nearest whole foot.
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What hole is the 40 foot mark on a trailer?

What does that mean to professional drivers? The center of the rear axle on all trailers must be at the 40-foot mark or shorter and must not weigh over 34,000 pounds on the trailer axles.
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How To Know Which Hole To Slide Your Trailer Tandems | Scaling A Load For Legal Weight



How far back can your tandems be?

When the distance between the first axle of your tandems is 35 feet from the rear axle on your tandems to the last axle of your trailer tandems, you will have to reduce the amount of weight that you load onto your truck.
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When should you slide your tandems back?

TruckingTruth's Advice: With 35,100 pounds on the tandems you must move a minimum of 1,100 pounds off the trailer tandems. To shift weight off the trailer tandems and onto the drive axles, you slide the trailer tandems back toward the rear of the truck.
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How do you measure trailer holes?

Since you are driving for Prime, as memory serves me correctly, it is from the front of the slide rail where the holes are. Even if they are plugged, you count the hole as a legal hole to use to get the count correct.
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When should you move your tandems?

Click here to see what the laws are where you will be traveling. How far should you move the axles? A good rule of thumb is that one hole on the trailer equals 250 – 300 lbs being moved from the truck to trailer, or vice versa.
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How much weight does each tandem hole?

You can estimate that you will move 250 pounds per hole for 4 inch spacing, and 400 pounds per hole for 6 inch spacing. This will help you estimate how many holes you'll have to slide the trailer tandems to move the proper amount of weight necessary in order to get the axle weights legal.
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What is considered overweight in a semi truck?

Most weigh stations force drivers to “shut down” their operation if a truck weighs more than 6,000 pounds over maximum gross weight.
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How do you distribute weight on a semi trailer?

You have to distribute the weight more or less evenly from front to back, but you can skew your figures a bit to load a little heavier in the middle and lighter at the front and rear. This helps distribute the weight a bit more evenly over the length of the trailer.
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How far back is the KingPin on a 53 foot trailer?

KingPin is 3' (not 3") from the edge of the trailer front. This has been a "standard" for 53' trailers since national adoption in the early 90s. Marc, the movable, adjustable fifth-wheel has no bearing on this at all, distance for setting the tandem is measured from the KingPin which is fixed.
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What is the maximum length your tandems Cannot exceed?

The load upon any combination of vehicles shall not exceed 75 feet. 35414.
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How far back should a trailer axle be?

To know how far back the axle needs to be moved, we want to subtract the trailer's tongue weight from 10 percent of the total weight. Then we will divide this number by the total weight. Then we will multiply this by the distance from the tongue to the axle.
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How far back can my tandems be in California?

For those states, that is the maximum distance you can have from the kingpin to the center of the rear tandems. California is the one mostly noted, where the limit is 40 foot. So, from the kingpin to the center of the rear axle can be no more than 40 feet in length.
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Can you pull triples in California?

Remember: Operating triples is not allowed in California.
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Why are all tractor trailers 53 feet long?

For a long time, the 48-foot dry van was the de facto standard in shipping due to regulation which limited overall vehicle length to 75 feet. Once those regulations were changed, the industry adopted the 53-foot trailer. These have room for 13 rows of pallets, plus and extra foot so that the door will close.
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How much tongue weight should a trailer have?

Tongue weight should be about 10% to 15% of the total weight of the trailer or gross trailer weight. Too much tongue weight can impair driver control over the vehicle, and too little can lead to sway in the trailer.
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How do I know if my trailer is too heavy?

Due to a bumper-tow or tag-along-style trailer's nature, you'll know when you're attempting to haul too much weight. The rear of the truck will appear hunkered down and the front end will feel light.
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Should trailers level when towing?

When towing, trailers should be level to improve stability, braking performance, and ground clearance. A level trailer will prevent poor towing characteristics, like sway, and uneven tire wear. If a trailer level is not possible the next best option is to have the trailer nose down a little.
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