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25

In addition to locking your bike securely with a good lock, there are several strategies you can use: Location Where you lock up can be nearly as important as how well you're locked up. If you're in a public, well-lit area, a thief might think twice about stealing a bike. A rack in an isolated, dark area may look more attractive to steal -- there aren't ...


21

Take the lights and anything else thats likely to be stolen off your bike. For things that can't be removed easily, you may want to use something like Pitlock security skewers (or security bolts) or glue in ball bearings or similar into the head of the bolts (which will make them hard to remove when you need to remove them, but a casual thief can't remove ...


19

get the kryptonite fahgettaboutit - as small as possible. http://www.amazon.com/Kryptonite-Fahgettaboutit-Bicycle-U-Lock-6-Inch/dp/B000OZ9VLU best lock out there, I don't think you could cut it with bolt cutters, you would need a hydraulic jack (the main reason to go for a smaller lock, so there is no room for the jack), or a disc grinder to get thru it.


18

Bicycle Theft, Guide No. 52 (2008) gives details around bicycle theft in different variants, stages and from different perspectives, contains reference for theft data. From the report: Offenders Not all bicycles are stolen for financial gain. Some offenders may take a bicycle simply to get from one place to another, and then abandon it. Research ...


17

A cheap ring lock can be defeated in less than one minute with a screwdriver. Furthermore, even a good ring lock (one that that isn't easily broken and might take three minutes to defeat) has a fundamental and fatal flaw - the thief can simply pick the bike up and put it in the back of their truck or van. A chain lock (even one that is 20 euro) can be cut ...


16

I would guess that hard evidence is going to be difficult to come by -- doing anything resembling a controlled experiment would be enormously expensive, and cyclists are too disorganized (by this I mean lacking unified organizational structure) to do some sort of sampling-based measurement or epidemiological study. I would just observe that, in my opinion, ...


16

Buy more secure lock(s) for your bike - I have a Kryptonite New York Standard and a Kryptoflex cable that I leave in work for my commute. I also have a New York Fahgettaboudit Mini for using about town on my single speed (no quick release installed on this bike). Utilise new/better lock from above to secure your bike in a more productive fashion. Personally ...


14

There's no way to 100% secure everything, but there are things you can do to make it more difficult or time-consuming. Don't lock up your bike. Bring your bike with you instead of leaving it outside. Mine goes into my office. Choose a location where you or other people will see thieves messing with the bike. Not a super-high traffic area (in that case ...


13

I'm a lifelong cyclist, including big cities like SF, Oakland, Baltimore, DC, Atlanta, etc... And I've worked in a few bike shops so I've heard several stories. Basically, there are 2 kinds of bike thefts: Crimes of opportunity. Meaning, if a thief thinks they can sell it for $20 or more and they think they can get away with it. These folks will steal ...


13

In terms of accessories like lights, GPS, etc. the only way to be safe is to remove them entirely. Remember that if something is quick-releasable for you, it's also quick-releasable for thieves. Bike lights will frequently get stolen even if they aren't easily removable, because they're valuable. There is an assortment of "anti-theft" bike accessories ...


12

A few years ago in Toronto, what was probably one of the biggest bike theft busts ever happened. Igor Kenk was trading drugs for stolen bikes, and stockpiling them by the thousands. (Supposedly he was planning to corner the market post-econopocalypse or post-ecopocalypse and be a king). Anyways, you can see pictures or the thousands of bikes that he stole: ...


9

Perhaps you might swap your current quick-release skewers by one of the many "anti-theft" alternatives (listed in my perceived order of security): Pitlock (www.pitlock.com): these require a special shaped key to open. You carry the keys with you, and no thief could take the wheel. Neither yourself if you lose the damn key; Velo Orange anti-theft skewers: a ...


9

A trick that couriers use around my area is to carry the key on a rubber band around their wrist - no more fumbling around in the pockets for a key. I find that a lock that you can wear across your chest like a bandolier is most convenient for carrying around. There are a number of chain locks around in this length that have a plastic tube over the chain to ...


9

For frequent use, I think it is hard to beat a lock that is built into the bike, e.g. the Axa Defender that is fixed to the fame of the bike and then locks the wheel; it also has a cable that you can use to lock the bike to the bake stand. It’s great for a lock on a “everyday” bike, as you can’t forget to take it with you.


9

Press charges, and have the police issue a warrant to search for a bike similar to yours/ Investigate (Asking her mom/neighbors questions about a bike that may be similar) If she shows up with one, you're out of luck, but it's probably not likely. Additionally, there is no way she would be able to pedal away with a bike that doesn't fit her, so her height ...


9

As for the Kryptonite, cutting one side an bending is certainly possible, but in reality if you can cut one side, you use the same tools to cut the other. The tools needed to bend the link after cutting one side are almost certainly not portable, and why would you carry two tools when one will do. In comparison to the D-lock - if you can cut though 18mm, ...


9

Some of what does and doesn't work, based on two great sources: a study in Montreal, and the USDOJ's COPS program's paper on bike theft prevention: What Works: Adequate Locks I won't discuss the matter in detail since it's not part of the question, but adequate locks and locking technique are the most important method of prevention for most people. Both ...


9

According to campus police reports (apparently backed by video surveillance), an organized gang of bike thieves operates in my area using techniques like this. They use the following system: A few "spotters" stroll around the campus and pick out the $1500+ bikes. An hour or so later, a different thief, dressed in coveralls etc. comes by and cuts the locks ...


8

For quill stems, you can use a rubber cement to glue a ball-bearing into the socket on the stem bolt, making it so you can't get at it with an allen key. You'd obviously want to use a glue that can be removed with a solvent, so that you'd be able to do regular service.


8

Occam's razor says that you should try the simpler/null hypothesis first, in this case that your tube wasn't stolen. There are two alternate hypotheses that you should test: 1) Are you sure that you had one in the first place? Perhaps you were running tubeless and never knew it? 2) Are you sure the tube is actually gone? One thing that can happen (either ...


8

The point of the National Bike Registry, and similar schemes, isn't so much to prevent theft as it is to make it (sometimes) possible to recover a bike after it's been stolen. Police departments do recover a lot of bikes; but, since it's usually impossible to trace ownership, most of them end up in police auctions. The bike registries help to solve this ...


8

I know you said 'I'm not going to find my bike', but it is definitely very helpful to figure out the spots where bike thieves try to sell your bike on. I have retrieved more than one stolen bike that way! In Amsterdam there is a service every Wednesday (in different locations) where you can let the number of your bike be registered and they will engrave it ...


7

IANAL. Almost certainly no, for the same reasons that a parking deck owner is not liable for the theft of a car inside. Unless you can prove that the bicycle rack was installed improperly due to gross negligence, and the improper installation allowed the bicycle to be stolen even while locked properly, you would have no case whatsoever. Locking a bike ...


7

They provide the rack for you to park your bike not necessarily lock it, that part is up to you. I have never heard anyone make a claim that ANY rack is safe, the courts will find that it is your responsibility to check the effectiveness of the rack. If shopping centers were responsible for the security of your bike, you would soon find that bike racks ...


7

Don't bother - your bike, laptop bag, and cat litter were not lost. It was a horrible experience no doubt, but in the end you didn't lose anything. So what can be gained from this experience? Stopping anyone else's bike being stolen by the juvenile is the obvious one. If we assume that this was the first time she had attempted to steal bike - it went ...


6

Perhaps someone was playing a prank on you. It would be very easy (less than a minute) to deflate the tube, cut it, then pull it out. You actually wouldn't need to touch anything else on the bike and depending on the tire size, might not even need to remove the tire. I have used cut tubes as a "tie-on" bungie cord in several instances, so it's also ...


6

I second the advice suggesting a small U-lock. Also, see Sheldon Brown's advice for locking strategy, which has done me well so far.


6

This may qualify as anecdotal evidence.My riding buddies carbon road bike had a section of top tube cut out to steal his kids $200 mountainbike off of the trunk mounted bike rack.


6

I like the Axa Defender that is fixed to the fame of the bike and then locks the wheel; it also has a cable that you can use to lock the bike to the bike stand. It’s great for a lock on a “everyday” bike, as you can’t forget to take it with you. As they are not common in the UK, most people don’t know how to defeat them. As always best to combine ...


6

I'd recommend kryptonite. The Evolution Mini is used by a number of my friends (messengers) and they use it many times in a day. Keeps things secure and it's small. If you want a bit more flexibility in what you can attach to then go for a larger sized one. https://www.kryptonitelock.com/products/list.aspx?cid=1001&scid=1000



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