Yep, I ordered the caps as well. According to a mate of mine, the centre is the weak spot of the rim and that the centre cap helps prevent water getting in and (maybe) weaking the wheel. I dunno if that's true or not, but decided to fit the caps for a complete look anyway. Originally, I was thinking of trying to stuff the original Subaru caps in, but decided against it. As for the nuts...Black lock nuts I think. Cannot afford the STI ones.
