I'm thinking of getting some new wheels, Riva RSX Alloy Wheel Details | Audi A4 (B8) Saloon / Avant (Estate) (2008 - 2012) - Rimstyle.com, as the 18" S-line wheels seem a bit small and I think 19's will look a lot better, but the new one's will be supplied with spigot rings to give the correct centre bore, what do you think, is that ok or is it best to get wheels with the correct centre bore?.