Originally Posted by alanbikehouston

A u-lock that is wide enough to go around both the rear wheel and the seat tube is also wide enough to permit the crook to use a $10 tool that will quickly break any u-lock below the "Gold" rated level.

Originally Posted by alanbikehouston

Duret, you and I must have different definitions of what a "mini" u-lock is. I have several mini u-locks, and none of mine is large enough to go around my rear tire and wheel, plus my seat tube, plus a beefy concrete post set in concrete.

Perhaps your bike has very thin tires, very thin rims, and your tire is rubbing up against a very thin seat tube. But, more likely, you are not locking up to large, beefy steel poles...poles that as thick as the end of a baseball bat, not skinny poles the diameter of a broom handle.