BILITOOLS Half Sizes Lug Nut Socket Set, 1/2" Thin Wall Impact Flip Sockets for Wheel lug Nuts with Non-Marring Sleeves, 17/17.5, 18.5/19.5, 19/21, 21/21.5, 22/22.5mm, Knockout Bar & Extension

There's yer problem! I see there were(at one time) some pretty chrome covers on the lug nuts. They can either swell with rust under them or otherwise tear off and leave you with an undersized lug nut. There are half-mm increment lug sockets that might have made your job much easier. Just an example: www.amazon.com/BILITOOLS-Socket-Sockets-Non-Marring-Sleeves/dp/B0DMSH3Y82