Hmm... Centrebore of 58m on the wheels, centrebore of ~73mm (I think) on the car. Do'h!

But I've seen them fitted before. I don't understand.
They are the same style rims as in the picture... https://img03.carview.co.jp/trade/im...eza+wrx/03.jpg

The 17s are off a wagon, is the wagon different?

Silly me, I shouldn't have assumed.

Edit - Oops, hubcentric rings stuck onto two of the rotors. D'oh! all good.