Take some red (or whatever color you prefer) nail polish, and dab a drop on the lug nut where it's against the wheel, after properly torquing. If the nut moves, the nail polish will shatter (it being lacquer). Alternative to
THIS.
Rusty & Cheryl
2011 F250 2WD 6.2L Gasser
2008 Weekend Warrior FB2100
"Common sense is in spite of, not the result of, education" - Victor Hugo (1802-1885)