How to Measure a Garage Door Torsion Spring Correctly

Measuring a garage door torsion spring correctly is very important when ordering replacement springs. Incorrect measurements can lead to balance problems and reduce spring life.

Step 1: Measure Wire Diameter

Wire diameter is usually measured using a caliper. If a caliper is not available, you can measure 10 or 20 coils and divide by the number of coils to get the wire diameter.

Step 2: Measure Inner Diameter

The inner diameter is usually marked on the spring cone, such as 1.75” or 2.0”.

Step 3: Measure Spring Length

Measure the length of the spring when it is relaxed and not under tension.

Step 4: Determine Wind Direction

Springs are either left-hand wind or right-hand wind. This is very important when ordering replacement springs.

Final Thoughts

Correct measurements ensure the replacement spring will match the original spring and the door will remain balanced.