Some bike lock makers provide their own internal security ratings for guidance. Those can be helpful, but the most secure locks we’ve tested use standard ratings from objective sources, including Sold Secure, which offers ratings of multiple vehicle types between Bronze and Diamond, and ART, which uses a number scale from 1 to 5.
So what do these ratings actually mean? Here’s a guide to two of the top lock-security firms and their rating systems:
Sold Secure was established in 1992 by Northumbria and…
