MX5 NA Wheel Corner - Kosei K1

Personally, i think that those wheels are one of the best looking one on a Miata... Here a collection of pics, with different sizes and offset on a NA.
Size/Offset is specified where knowns.

Size: 15x7J Offset: +33

Front: 16x7.5+32 - Rear: 17x7.5+25