They will fit im running bbs RCs 17x7 et42 the center bore of the wheel is bigger but they have things called spiggot rings which reduce the size to 56.1 for the mini.
Last time I saw a set like your talking of they were around 700 used with decent brand tyres!
Lucky is a way of life (tm)  243.5 bhp & 205.3 ft lb |