Bike locks put to the test: which ones are hard to choose – which ones aren’t?

If you love your bike, you better lock it very securely. But which lock protects well? Stiftung Warentest looked at 20 different models. But some deter not just thieves.

Lots of light, but also shadows: That could be the conclusion of the current test of 20 bicycle locks from Stiftung Warentest (issue 5/2021). Half of them score “good”. However, more than a quarter fail as “inadequate”.

But only one of them, because it is far too easy to break. The other five models, priced between 30 and 139 euros, contained substances suspected of being carcinogenic or harmful to reproduction. This also applies to particularly shatterproof candidates.

Stiftung Warentest tested 20 locks

Otherwise, two of the stressed models could have been test winners with “very good”. So no lock cuts better than with “good”.

Frame locks are easy to pick, but in combination with an extra chain that can be clicked in, they are very secure; The Trelock RS 453 received a “good” rating.

The foundation tested a total of 20 different models from 30 to 160 euros. Among them were five U-locks, four folding locks and six chain locks. There are also three fixed frame locks with an extra chain and two locks with textile covers.

Cyclists get good security from as little as 30 euros

The folding lock “Kryptonite Kryptolok 685 Folding Lock” (50 euros) is in first place together with three chain locks: Like the “Axa Newton Promoto+ 4 100/10.5” (64 euros), it gets the “Kryptonite New York Chain 1210” (80 euros) and the “Decathlon B’Twin 900 Chain L” received the verdict as “good” (grade 1.9). The latter can also be celebrated as a price-performance winner at 30 euros.

Castle Kryptonite

Folding locks can be folded in and out like a thumbstick, take up little space, but are also not that secure. Winner of this type: Kryptonite Kryptolok

“Abus Granit Plus 640/135HB1 50” (85 euros) also scored “good” (2.0) for the U-locks. When it comes to folding locks, the “Trelock FS 480 Cops” (95 euros) also gets this rating (2.5).

Castle Abus granite

Stable stuff: U-locks are very solid and “crackproof”, but also rigid. The best in the test: Abus Granit Plus 640

In addition to the mentioned chain locks, “Abus Ivy Chain 9210/110” at 120 euros and “Trelock BC 680” at 63 euros are also rated as “good” (2.0 and 2.1). As one of two textile coat locks in the test, the “Litelok Gold Wearable Size L” at 160 euros scored “good” (2.4).

Castle Litelock

Textile coat locks: Textile layers enclose steel cables or chains, the metal inside makes them stable. Some models can be worn around the waist as a belt. Litelok Gold performed best here.

“Trelock RS 453 Protect-O-Connect” is a frame lock for 74 euros and is also rated “good” (2.0). In addition to the total of six models with “poor” four locks are “satisfactory”.

Pollutants in some locks

Cyclists can also be exposed to the mentioned pollutants for a longer period of time than just when unlocking and unlocking. The testers explain that one provider also advertises that the lock, which weighs almost 2.4 kilograms, can be tied around the waist while driving.

Castle Axa Newton Promo

Chain locks: Linked chain links make them flexible. They are also hard to crack. Axa Newton Promoto+ 4 got a “good”.

“We have asked the affected providers for their comments. Some questioned our results, others contacted their suppliers,” writes the magazine in relation to the suppliers’ reactions to the test. In parts, our own tests could not have repeated the results , other producers speak of “individual outliers.” Only one (Hilok) offered the trade.

You may also be interested in: This is where most bikes are stolen

Incidentally, the best way for cyclists to secure their vehicle is to secure it as high as possible to solid, stable objects such as posts or poles. It is best to take two locks and use them to secure the frame together with the front or rear wheel. If you use models from different manufacturers, it makes it a little more difficult for specialized thieves.

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