Broken wheel stud and lug nut.

boosted180

i dont have wheel locks on my car, but i have a question that's kind of related. the lug nuts for our cars are 21 or 22mm? it's weird, but on my car, when using a 21mm socket, it seems too tight (almost doesnt even fit), but 22mm is too loose. i had a shop work on my car a while ago, and i'm thinking maybe they put on the wrong nuts?? i dont remember having this problem before and i used to have to remove and tighten the nuts all the time when changing my pads before and after track days. i'm pretty sure it's supposed to be 21mm. someone correct me if i'm wrong. thanks.