I have Kyokugens and one of them bit down on the end of my wheel stud and crossed threads. Now I have to drill out that stud to get it off. I don't really know why it did it. Cuz I used the key and unscrewed them like normal than it got very hard to do for some reason so I used one of those 4 sided "+" wrench things and basically ate that *****. So now I have to drill it out. But I think it may be the wheel stud that was messed up and not the lug nut, but who knows. I now have Torque Wrench and Torque all of them to spec.