These nuts cost me over $140 for ARP wheel studs and over $200 for a Lost Track Day. I torqued these lug nuts to just 90 ft-lb after manually installing them on the star wheel. A year later, all of my high-strength ARP expander bolts are damaged, and one per wheel on the right-hand side is completely detached and unusable. The only good thing about this story is that I took the wheel nuts off the day before the race, so at least I wasn't stuck there, I was just stuck in my garage with no wheels. Do yourself a favor, save $400 and buy another manufacturer.