Storage space is a rare commodity on a motorbike or scooter and yet it always needs securing against theft and unauthorised use. Which is the best sort of lock for a motorcyclist to carry for normal use? Brake disc locks are a practical solution for many motorbikes. They are very compact, light and thus easy to transport. If your vehicle is to be parked for a long time in a place where there is a high risk of theft, combining the lock with a chain is recommended to prevent the motorbike from being carried away.