As I currently don't have centre caps I can see the spigot rings. Now I am unsure if it matters which way round they are but I noticed 2 of them have split on one side of the ring, not broken in half. If that makes sense.
Anyway, what I wanted to know is it worth replacing them and what size do i need? The wheels came off a b6 a4 so am unsure what bore they had but he didn't use spigots for them on his car.