Bike Lock - Which Type is Best?

There are three main types of locks. Choosing the best bike lock is an individual choice based on three factors:

1. The rate of crime in the area you are in. If bikes are stolen every day, it means there are criminals that are good at stealing bikes. You need extra protection.
2. Is your bike outside overnight?
3. How far do you have to carry your lock? Will a fifteen pound lock in a backpack on your back cause problems?

Cable Bike Lock - A cable lock is made of a wound steel cable. While it is generally easy to snap with bolt cutters or power tools but in a low-crime area it is a lightweight, easy choice for medium security needs. Always make sure to thread the cable lock through the wheel and the frame. If you only put the cable bike lock through the wheel, it can be removed and the rest of the bike is easily stolen.
U-Bar Bike Lock - The U-bar style lock comes in mini or light varieties that only weigh a few pounds all the way up to a six pound U-bar heavy-duty lock. The U-bar is generally only going to be defeated with a hacksaw and time, but each U-bar bike lock is different and it is important to also look at the locking mechanism to make sure it cannot be easily picked with a pen or other small object. Reading online reviews can help you determine if the U-bar style is the right bike lock for your needs.
Chain Bike Lock - Even in the chain lock category there are differences based on the padlock that clasps the two ends of the chain together. Chain bike locks come in lengths from two and a half feet to over five feet. Chains specifically made for bike safety are tempered and resistant to bolt cutters. Chains are the ideal choice for high-crime areas where a bike thief may actually carry a hacksaw or bolt-cutter around under a coat or in a bag. Of course, the chain is only as strong as the lock that holds it together. While a dual action disc lock system resists everything including freezing, if you have a disc lock on a base that can be cut through with a hacksaw, it is vulnerable.
The key is to balance your security needs with your comfort. If you are in a low-crime area you may only need a light cable bike lock that is easy to carry. A high-crime area requires a sturdy, heavy chain bike lock that cannot be easily broken - that means you will be carrying a nine to fifteen pound lock over your shoulder or in your backpack. If you are not in a high-crime area, but want more security than a cable lock provides, a U-bar bike lock will serve you well.