Have not had one stolen yet , knock on wood . But here ' s some suggestions 1 . Whatever locking method you use , you are only slowing down a determined thief . So , it ' s just a matter of how much you are slowing him down and how much you likelove your bike . Love it or like it a lot ? Then spend some money on a decent ulock . I don ' t like to put a dollar amount on a good lock but figure you ' re spending at least $ 75 . 2 . I use the Sheldon Brown method of locking up . Ulock around the postpole and through the rear triangle of your frame around the rear wheel . I also have security skewer on my front rim . Cheapest thing to replace on your bike is the front wheel . Also make sure whatever you ' re locking up to is solid . Plenty of bike racks out there that are no longer secured to the cement sidewalk . 3 . Try and use the smallest ulock size possible . Large ones give thieves plenty of space to get your lock off , whether it ' s with an angle grinder or simply putting a run of rebar through and whamming it open with brute force . 4 . If you can avoid it , don ' t have quickrelease anything on your bike . You really don ' t need it and it just makes security on your bike a nightmare . Not even a quick release seat post . Just don ' t do it .