I replaced all the nuts on my 2006 Tacoma with these because the nuts that came with the truck originally had an aluminum body that eventually swelled. That means my crowbar wouldn't fit on it if I had to change tires. Luckily I noticed that before I had an accident and needed a tire change. So I went ahead and looked around for nuts that weren't covered. In the end I settled on these Dorman wheel nuts. I replaced all my nuts in April 2016. A few days ago (September 2016) I was checking my tire pressure when I found that 4 of these nuts had lost their ends. I quickly ordered 4 new ones and exchanged them. I don't know why they did it, they were all on the same tire but I didn't drive rough and did 1 tire change at a reputable mechanic. Hope these 4 new ones hold up! Anyway I'm a bit disappointed in them because they seem to be of really good quality, I hope it was just a bad batch!