Choosing the best bike lock for your ride is just a question of asking yourself where you’ll be locking your bike up most regularly, and what space you have either in your bag, bike or on your person, to transport the lock with you. Locks are by their very nature quite heavy, so it’s definitely worth taking a moment to think about where you’ll keep the lock whilst on the move; whether attached to the bike via a supplied bracket, in a bag or pannier, or even around your waist.
The ‘where’ of the lock is key to deciding which type of bike lock is the right one for your ride. As a rule of thumb, the more risky the place, the stronger and more impenetrable the lock, and vice versa. For example, a dark, inner-city area would pretty much demand a tough-as-it-gets U or D Lock (so called because they look like a U or D!), whereas a brightly lit area, perhaps where the bike will nearly always be in your line of sight, won’t need anything half so resilient; think chain or cable lock in this instance.
Our recommendation is to choose appropriately, and always buy the best lock you can afford that meets all of your requirements. The pain of losing a bike to theft goes deeper than the hassle and monetary loss, and can be quite an upsetting thing to experience.