We do a lot of night fishing on our home lake!! Someone tried to get our boat trailer.It was locked!! so they lossened up our lug nuts on our trailer tires!!! The spare tire was locked to!! Down the road a couple miles the trailer tire came off!!! Lost the tire but by devine intervention!!! someone looking over us it did not damage the lug bolts!! Had some spare lug nuts on my spare tire!! We put the spare on!! Messed up my finder on trailer(repaired) all is well!!! The point is mark the lug nuts on your trailer with paint so you can tell if the lug nuts have been turned!!!(carry some spare) This all happened at 2:30 in the morning!!! I had to be at work at 6:30 am!!!