What trips my trigger is the guy who is skilled at getting fasteners, (especially wheel nuts) within just a few ft/lbs of the break/strip point without actually breaking anything, and then sends his customer out the door to lose a wheel after a few miles. One thing that happens pretty regularly is that the lugs get somewhat different torques and the tightest one is doing most of the work of holding the wheel on. Once that one breaks or strips, then the next tightest one takes over. When that scenario repeats 5 or 6 times, there goes a wheel! Properly-torqued lugs share the strain equally, which is why I would never let my students install lug nuts with an impact wrench- - - -snug them all, and then break out the torque wrench. Over-torqued and stretched fasteners can't be fixed by loosening and retightening correctly- - - -the damage is already done.
Jerry