Originally Posted by
Pippin
Realize with the Sheldon method you are going through the frame (well, nearly all frame designs). An advantage to this method is that is that there are not two rigid endpoints that allow for a leverage attack. SHeldon has one ridge (whatever you lock to) and another flexy (the wheel) make a leverage attach much more difficult. Cutting through a tire rim would also be very difficult. Frame to rack often leaves you r wheel unlocked which is often the 2nd most expensive component on a bike.
There was a poster here awhile back who tried cutting through laced rims, and found it quite easy. That being said, most bike thieves ride away on the bikes they've stolen, so unless you are riding something
really special there probably isn't much chance of someone cutting your rim.
As I see it, the problem with the Sheldon Brown method is that it
looks insecure, inviting people to mess with your bike.