I loosen and re-torque every time it is in the shop for anything, even state inspection. There are times I have had to resort to a 5 foot “cheater pipe” to loosen them. I don’t want a flat tire on the road, where I don’t have a five foot pipe. You would be amazed at how easy it is to loosen lug nuts that are torque to 100 ft. pounds, even after a year.