Got a new trailer with a spare and was concerned about the opportunity thieves. I think given the time, and a place they could make noise (i.e. out in the boonies with no one around) they could probably beat this lock off and steal the tire if they really wanted it.  What it's good at is deterring the opportunity thieves who could have taken the tire in under a minute with a battery powered ratchet, or heck even with a 4-way.  Those thieves will see the lock and go on to the next guy that doesn't have one, and for the price, it's good insurance.  Let's face it, the vast majority of crimes to vehicles are crimes of opportunity, meaning, you made it easy for them. Get the lock and they will pass you by.