How to Measure a Coil Spring Without a Specialized Measuring Tool

You can measure the coil spring yourself, even if you do not have a dedicated measuring ruler.

Step 1: Identify the Coil Spring Type

Step 1: Identify the Coil Spring Type

  • First, check if the shock absorber is a coil spring type.
  • Make sure the spring is visible (not hidden inside a cushion tube).

Note: Some vehicles have rear-wheel coil springs.

Step 2: Prepare Tools

Step 2: Prepare Tools

  • Gather a ruler, a flat piece of paper, and scissors.
  • The paper should be smooth (no folds or wrinkles).
Step 3: Insert Paper into the Coil Gap

Step 3: Insert Paper into the Coil Gap

  • Place the paper carefully between the gaps of the coil spring.
  • Press lightly to mark the effective diameter of the coil.
Step 4: Remove and Measure the Paper

Step 4: Remove and Measure the Paper

  • Remove the paper and use the ruler to measure the width of the marked gap.
  • This measurement determines the required cushion buffer size.

Final Step: Select the Correct Spring Series

Method 1: Manual Table Reference

Use the chart below to discover which spring series matches your measured gap:

Series

Gap Between Spring Diameter 

Spring Thickness

Spring Diameter

A

47 To 50mm

13mm

173mm

B

38 TO 40mm

13mm

160mm

C

27 TO 30mm

10mm

131mm

D

20 TO 23mm

10mm

113mm

E

12 TO 15mm

09mm

112mm

Example: If your measured gap is 28mm, Series C will be suitable for your vehicle.

Method 2: Automatic Identification

Enter your Coil Spring Gap Between Spring Diameter (mm) below:

Find Spring Buffer Series Identifier

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