A built-up automobile/motorbike wheel of a light alloy of a relatively large diameter is lightened to have a high-grade design. The wheel is of the two-piece type comprising a rim (2) having an outer rim and an inner rim integrated and a center disc (1). A plurality of thick portions (9) for forming threaded holes of fastener bolts for fastening the rim and the center disc are integrally protruded from the rim (2), and the rim (2) in the portion, excepting the thick portions, extending from a bead seat portion (6) to a well portion (8) of the outer rim is finished to a substantially equal thickness.