You need a u lock plus something else another u lock a cable lock locking skewers.
How to lock a bike securely.
With one u lock there is no possible way to secure all the components on your bike that a thief might steal.
This way the thief would have to remove both locks to get your away with your bike and both of your wheels are secured with at least one lock.
A summary of where to lock your bike in the street.
Replace your quick release skewers with more secure options.
Wrap a long length of bicycle chain with electrical tape.
The bike can be lifted and twisted and the resulting leverage can break locks.
This will prevent it.
A good method is to first lock your bike with a d lock that goes through the bike frame and the back wheel and then add a cable intertwined between the d lock the front wheel and frame.
Secure your saddle in other ways.
Choose a busy area with cctv lock your bike in the middle of lots of other bikes always secure your bike to a fixed immovable object ideally a bike rack don t lock your bike outside places you ll clearly be for a long time if you know it s a high.
Many bikes have quick release wheels and saddles which.
Instead lock the rear triangle of the frame.
Make sure that your d lock passes through the rear wheel the frame and then around the secure object to which you are locking your cycle.
Then use your second lock to secure the front wheel to a secure immovable object or to the rear wheel and frame.