Can Leaf Springs be Replaced with Higher Capacity Springs

Question

Question:

My axle rating is 3500 lbs and and as i understand it 1750 lb leaf springs would be adequate per side. my question is can i upgrade to 2000lb springs per side equaling 4000 lb?

asked by: Jeff

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Expert Reply:

You can replace your current springs with higher capacity springs, like # e57SR which are rated for 4,000 pound axles (2,000 pounds per spring), but it isn't going to increase the weight capacity of your trailer. You'll still be limited by the lowest rated component of the entire trailer.

You'll want the replacement springs to be the same length as the current ones. measure them from eye to eye. Keep in mind your old springs may be sagging or have elongated.

expert reply by: Charles S

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Answer 1

If the leaf spring part #e57SR that you referenced matches up dimensionally to what your trailer has and has a capacity that is 400 lbs more than needed it would work just fine. Having a bit extra capacity for the leaf springs would not cause an…

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Answer 2

The ML-042-00 springs you got do not have the capacity your 2016 Gulf Stream requires. Those springs are only rated for a 3,500lbs capacity. I recommend replacing those springs with the correct 4,000LB Springs #e57SR so you will not have the springs…

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Answer 3

I do not have the ability to pull an OEM build sheets to see what parts they installed at the factory so we will need to identify what axles you have installed outside of just the weight rating. I have linked a couple help articles that walk through…

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Answer 4

For higher-rated leaf springs that match the length on your existing sets, I recommend taking a look at the 3-Leaf Double-Eye Spring #e57SR. This double-eye spring features an eye-to-eye length of 25-1/4 inches and a spring width of 1-3/4 inches. It…

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Answer 5

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 6

Trailer leaf springs can grow longer after many years of use. A new springs that measures 25-1/4-inches long like #e57SR could easily measure 25-1/2-inches after years in service on a trailer. Springs can lengthen as much as 3/4 of an inch. If your…

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Answer 7

Usually it's best to go with the leaf spring capacity that matches the axle capacity but if you are sure you'll be a lot under that I would shoot for a little over what it will weigh at max. So if you're going to be at 3,000 lbs max I…

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Answer 8

When you replace leaf springs on a trailer you want to match the capacity as well as the length. Since your 2021 Wolfpack 365PACK16 has 7k axles you want 7k leaf springs (3,500 lbs per spring). You can also use your spring eye to spring eye…

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Answer 9

For your 2004 Weekend Warrier Super Lite FK 2100 rated at 7650 lbs GVWR, I have some replacement springs that will work great for you. The are the 3-Leaf Double-Eye Spring for 4,000-lb Trailer Axles - 25-1/4" Long #e57SR. Even though they are 3…

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Answer 10

We may have the exact leaf springs that you are needing depending on how you measured your current leaf springs. When measuring your leaf springs you will want to measure from the center of one eye to the center of the other eye. The Universal Group…

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Answer 11

The 2-3/8" measurement you are referring to on the CE Smith U-Bolt Kit part #CE23002 is in regards to the diameter of trailer axle that the kit is designed to be used with. The actual width of the u-bolt from the inside edge of each bolt is…

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Answer 12

Assuming your springs have some age and some mileage on them, then they were likely 25-1/4 inch long springs. That is the typical size for 3,500 - 4,000 lbs double-eye leaf springs like part #e57SR. These are the springs I would go with if I were…

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