It’s typical for the best bike locks to be rated for their security by an independent assessor. In the UK, that’s Sold Secure. It uses four grades to measure the level of deterrent the lock provides, with Bronze being the lowest rating and Diamond its highest, with Silver and Gold in between.
However, not all locks are sent to Sold Secure. A case in point is the 6206K Goose Lock from Abus, which is only rated by the German brand itself, getting a score of 7/15. This score, combined with the lock’s cable design, means that it's better suited to those who want to balance weight and portability with security - or plan to use it in conjunction with another lock.
