I guess impala owners like to get plain Jane wheels in 5x115 bolt patterns. Brokers studs are usually from morons not torquing their lug nuts properly are using a impact or crappy lug nuts. 3-4 years from me on 114.3..0 studs have been broken.60k miles later. I just reread your first post if your brother has the rims why not just jack up your car and try them on and go from there ?