Hi, I have a set of Rota RB 4 X 100, ET 25 for sale, $400. New In Box. They look like these:
http://www.ebay.com/itm/15X7-ROTA-RB-4X100-57-1MM-WHEELS-RIM-BMW-2002-E21-E30-/350471821638?pt=Motors_Car_Truck_Parts_Accessories&hash=item5199bf9946&vxp=mtr