Had a flat a couple of days ago, I checked the lug nut torque on the repaired wheel as advised by the tire shop, They recommend stopping by, and they re-torque the lugs. I have a torque wrench so I saved a trip. After checking the serviced wheel(torqued to 110 lbs-ft spec),I checked the other 3, All the lugs were loose by nearly a quarter turn, most were only at about 75-80 lbs-ft. My car has only 1300 miles on it and has yet to be serviced. So if you have a new car, ck or have someone ck the lug nut torque, loose lug nuts will only continue to get more loose.