How Does Trailer Leaf Spring Get Measured to Pick Out Replacement

Updated 12/26/2022 | Published 12/25/2022

Question:

for the trailer leaf suspension, how do you measure the length of the double eye springs?

asked by: Daniel J

Expert Reply:

When measuring a trailer leaf spring to pick out a replacement you'd need to measure from spring eye center to spring eye center with no weight on the spring. For example, the Dexter spring part # 072-017-00 would be correct replacement if the axle was a 2,000 lb axle and the measurement was right at 20-1/4 inches. You do need to factor in a bit of spring stretch since they tend to flatten over time. Around 1/4 inch is about correct.

expert reply by: Jameson C