I'll use this Master Lock 262DAT Chrome Lug Nut Style Spare Tire Lock on the spare of my boat trailer, for some security while it is in storage.  I'll also add a bolt with a locking lug nut later, as an extra deterrent, when I find the one I need.  Theft is a reality and anything of value is subject to a theft.  This Master Lock 262DAT will not assure that there will not be a theft of your spare, it will make it harder for that theft to happen.  I like it for the price of $6.77 delivered free with my Prime membership.  It is the least I can do, to try to deter theft!  I'll do more later.