OZ made them as a Motorsport wheel in magnesium

They were known as "Mag Super-Lites" lots of Ford rally cars (Saphs and Escorts) used them from 1992 onwards. Available in 16"/17"/18" diameters, in 8" and 9" width (my 17" x 8" ones pictured below - ready for painting)

IIRC the road version (as fitted to Es Cos Monte) were an alloy version.





As fitted to Rally Cars: