How To Identify Your Trailer’s Leaf Springs | Step-By-Step

Jun 23, 2025 | How To

How To Identify Your Trailer’s Leaf Springs

Are your trailer leaf springs worn out, broken, or sagging? In this step-by-step trailer maintenance tutorial, we’ll show you how to identify your trailer’s leaf springs with ease! Whether you’re a DIY handyman, replacing broken trailer springs, or buying a new axle, this guide will help you find the exact leaf spring replacement you need.

We’ll cover:

  • Types of trailer leaf springs (double-eye vs. slipper)
  • How to measure spring length and width correctly
  • Identifying the right axle weight capacity

 

Step 1: Determine the type of Spring

The first step to identifying a trailer leaf spring is to determine whether it’s a double eye spring or a slipper spring. A double eye spring will have two bolt holes one on each side with a bushing inside of them. A slipper spring will only have a single eye for a bolt and a hook on the other.

Step 2: Correctly measure the Spring

The next step is to get the correct measurements of the spring. When measuring a double eye spring measure from the center of one eye to the other. A slipper spring is measured from the center of the one eye to the inside of the hook on the other side.

When measuring the width of the spring it’s the same for both double eye and slipper springs. Simply run a tape across the top leaf of the spring to determine its width

Step 3: Determine the Wight Capacity

Counting the leaves in the spring is a way of determining the spring’s weight capacity.

This video is perfect for trailer owners, RV enthusiasts, and utility trailer repair projects. Whether you tow a boat, utility, cargo, or camper trailer, knowing how to properly identify and replace leaf springs is crucial for a safe and smooth ride.

Need replacement trailer leaf springs? Check out https://www.blueswiftaxles.com/ for high-quality parts!