How do thieves get around disc locks?

A disc lock stops the front wheel from rolling — and thieves have three straightforward answers to that.

• They lift the bike. The most common answer. A disc lock does nothing against two people and a van, because the wheel never needs to turn.
• They cut the lock. A battery angle grinder goes through most disc locks in a few minutes. Cheap ones fall to bolt cutters or a hammer attack even faster.
• They remove the wheel. Less common, but a front wheel comes off in minutes with basic tools, lock still attached.

So are disc locks worthless? No — used correctly, they're a genuinely good layer. They're fast to deploy, portable, and an alarmed disc lock adds a 100+ decibel problem the thief has to solve in public. That noise alone ends many attempts.

Using one right: put it on the rear disc if you can (harder to remove the wheel), position the lock so there's no room to roll the bike even a few inches, and pair it with a chain to a fixed anchor when parking overnight — the chain is what answers the van.

And because every lock is ultimately just time, a hidden GPS tracker is the layer that still works after the grinder wins.

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