150 in the book or 165 ft lbs when the truck is sitting on the wheels. The nuts where never tightened on that side so the drive home started snapping them off . I've never been so frustrated at a tire shop before! The book says we can put a drop of oil on that flat washer but I've never done that yet. Those F450's are nice!Those look like the 140 foot pound washer style lugs that my F-450/F-SuperDuty has-those need to be pretty tight or the wheel will move around & oval the lug holes quickly. Lucky that didn’t fall off completely, that looks pretty bad. Glad mine are steel with SS covers & not alloys!