Originally Posted by
TheGefish
But I've got a question cable and U-lock systems have me running the cable through the rear wheel to the U-lock, which is going through the front wheel, frame, and object. But if I ran it like that, wouldn't it be easy for a thief to just break the U-lock and get away with everything?
You're correct. The cable (those with only 2 loops at either end) is meant to prevent theft of the front wheel only. If the cable is running through your front wheel back to the U-lock which is in-turn secruing the bike (rear wheel and frame), then "all one has to do" is break the U-lock.
That is why 2 seperate and differant types of systems are recommended. Each lock has the ability to lock onto itself.