Tire shop over torqued lug nuts (1969 Dart). Should I redo it?

Has anyone ever had a lug nut come loose while driving? It really doesn't take even 55 lbs. For years I've used a 4 way and tighten them just like an oil filter- 1/4 turn after tight. I have not checked the actual torque on mine but I think it's probably closer to 30 lbs. After this thread I'm going to have to go check mine with a torque wrench. Never had one come loose though. There is really very little that would make them loosen.....