Bike theft is a bit of a problem here in NYC. So…in this post we review the various types of bicycle locks available, discuss how bikes are stolen and make some recommendations about avoiding bike theft. Cost vs. security:  There is a correlation between the cost of a lock and its level of security.  Most manufacturers rate their locks according to strength; Kryptonite rates theirs 1-10 and Abus is 1-15; the higher the number, the stronger the lock.  The more valuable the bike, the more risky the parking location and the longer you leave it parked outside, the higher your lock’s rating should be and more it will cost.  (And in general all of NYC would be considered a high risk area) Sold Secure…