Even springs from the same batch rarely match their printed rate. In this video, we test two identical springs (both rated at 51 N/mm) using the LABA7 Spring Dyno. The results? 50.3 and 49.6 N/mm. A small difference, but enough to change how a suspension feels on the road or track. Spring rate variation is normal. It’s part of manufacturing tolerance, but professional workshops can’t rely on markings alone. That’s why a spring rate tester or spring dyno is essential for accurate setup and custom
0:40
Even springs from the same batch rarely match their printed rate. In this video, we test two identical springs (both rated at 51 N/mm) using the LABA7 Spring Dyno. The results? 50.3 and 49.6 N/mm. A small difference, but enough to change how a suspension feels on the road or track. Spring rate variation is normal. It’s part of manufacturing tolerance, but professional workshops can’t rely on markings alone. That’s why a spring rate tester or spring dyno is essential for accurate setup and custom
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