How To Measure Leaf Springs

October 30, 2023

Are you a truck or trailer owner looking to maintain your vehicle's optimal ride quality and performance? Accurate measurements of your leaf springs are crucial. As a suspension manufacturer specializing in OEM and aftermarket suspensions, the Cush Corp team understand the importance of precise measurements.


In this blog post, we'll walk you through the process of measuring leaf springs, ensuring your vehicle stays in top shape.

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Understanding Leaf Springs

Leaf springs are a fundamental component of your truck or trailer's suspension system. They consist of several layers of spring steel stacked on top of each other. These springs play a vital role in supporting your vehicle's weight and providing stability.


Accurate measurements of leaf springs are essential because they influence the suspension's performance. Incorrect measurements can lead to problems such as uneven weight distribution, poor ride quality, and safety hazards.

Leaf Spring Measurement Guide

Tools Needed for Measuring Leaf Springs

Before we dive into the measurement process, let's gather the necessary tools:


  1. Tape Measure: A reliable tape measure with both metric and imperial units.
  2. Calipers: Digital or manual calipers to measure thickness accurately.
  3. Straight Edge: A straight piece of metal or wood for measuring flatness.
  4. Safety Gear: Gloves and safety glasses to protect yourself during measurements.

Measurement Steps

Step 1: Preparation

Before you begin, ensure your vehicle is safely elevated and securely supported on jack stands or a lift. Safety should always be a top priority.

Step 2: Measurement Points

Identify the critical measurement points on the leaf spring:


  • Length: Measure from the center of the front eye to the center of the rear eye.
  • Width: Measure the width of the leaf spring at its widest point.
  • Thickness: Use calipers to measure the thickness of individual leaves, if necessary.

Step 3: Measuring Length

  • Place the tape measure at the center of the front eye.
  • Extend it along the longitudinal axis of the spring to the center of the rear eye.
  • Record the measurement in both metric and imperial units.

Step 4: Width Measurement

  • Position the tape measure perpendicular to the leaf spring.
  • Measure the width at the widest point.
  • Record the measurement in both metric and imperial units.

Step 5: Thickness Measurement

  • Use calipers to measure the thickness of individual leaves if you suspect uneven wear.
  • Take multiple measurements along the length of the leaves and note any variations.

Step 6: Additional Considerations

  • Check for signs of wear, cracks, or deformities in the leaf springs.
  • Pay attention to the condition of the spring bushings and shackles, as they can affect suspension performance.

Common Mistakes to Avoid

Common mistakes in measuring leaf springs include inaccurate tools, neglecting safety precautions, and overlooking wear and tear. These errors can result in compromised vehicle performance and safety. Always use the correct tools and prioritize safety.

Benefits of Accurate Leaf Spring Measurements

Accurate measurements are not just about precision; they also offer significant benefits:


  • Improved ride quality
  • Enhanced vehicle stability
  • Even weight distribution
  • Safer handling and reduced risk of accidents

Frequently Asked Questions About Measuring Leaf Springs

  • Can I measure leaf springs without removing them?

    It's possible to measure them in place, but removing them may provide more accurate results.

  • When should I replace my leaf springs?

    Replace them if you notice excessive wear, cracks, or a significant reduction in ride quality.

  • Can I install aftermarket leaf springs myself?

    It's recommended to consult a professional to ensure proper installation.

For Custom-Fit Suspension, Choose Cush

Accurate measurements of leaf springs are really important for maintaining your truck or trailer's performance and safety. Whether you're into OEM or aftermarket suspensions, following these steps will help you achieve the best results.


If you have any suspension-related needs, don't hesitate to browse our website for a wide range of suspension products and services. Cush Suspensions are experts at creating custom suspensions systems that are designed to fit your ride. Our expert team is here to assist you in achieving the optimal suspension setup for your vehicle.


Contact Cush Today!

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