Preventing Bicycle Theft - How To Lock Your Bike

Best Tips for Theft Prevention

  • Always lock your bike's frame and wheels with a high-quality, modern U-lock (with a disc/flat key)
  • Remove all detachable items like lights, bags and quick release parts and take them with you
  • Lock to a bike rack, or firmly affixed (bolts covered in concrete) parking meter or sign pole - these are the most secure places
  • See images to the right for locking depictions.

More Tips

  • Record your bike's serial number. Take a photo of you and your unlocked bike. Keep the receipt. All will help you identify the bike.
  • Always lock your bike, even if you're just leaving it for a moment
  • Always lock through the frame and a wheel. Add a cable, cable lock, or second U-lock to lock the second wheel. See diagrams to the right.
  • Buy the most expensive lock you can afford. U-locks are strong and better ones come with theft warranties. Only buy a U-lock with a flat or disc key. Cylindrical keyed locks are more easily picked. See diagram about keys to the right.
  • Beware of locking to "sucker poles" that are loosely bolted down and can easily be removed.
  • Avoid locking to private property. Store your bike inside if space is available.
  • Lock your bike when keeping it in a garage or on a porch.
  • Learn about the lock manufacturer's warranty and product replacement policy.

Additional Resources

If it's stolen

Diagrams showing best lock position

properly locked bike

Shows bike with u-lock securing rear wheel and cable securing front wheel.

bike theft prevention graphic

Shows bike with u-lock securing front wheel, as well as u-lock securing both wheels.

Photo showing U-lock key types

photos showing good and bike U-lock key types

The good key on the right is flat (also called disc), while the bad key on the left is cylindrical.

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