I've read posts where people have problems mounting their u-locks because they will interfere with the bottle cages or the u-locks are just too big. This isn't one of those posts. I have a mini u-lock and no cages on my bike. The problem is that every tube seems to have cables running along it that would interfere with the placement of the bracket. Actually it's just the top tube and the seat tube that have cables running down them. The down tube is just too big for the bracket (the tube itself is kind of elongated and not round along the diameter like the other tubes). I'm just really worried about messing up one of the cables because I'm a newbie when it comes to bikes. My bike is a Gary Fisher Nirvana (a hybrid bike). In addition to the mini u-lock I also have a cable lock that I toss into my backpack. I'd toss the u-lock in there too but my bag is heavy enough as it is.