To provide a vehicle wheel disc in which the selectable range of wheel specifications is broadened as a result of a reduction in the degree of outward protrusion from the curved portion of the perimeter edge of decorative holes in the axial direction of the wheel, in which the wheel disc durability is ensured, in which the number and the arrangement of spoke portions and hub-fastening bolt holes do not restrict each other, in which the hub nut fastening operation is simple, and in which the molding of the wheel disc is simple.
Spoke portions 13 of the wheel disc comprise a spoke bottom wall 13a, and spoke side portions 13b including spoke side walls 13b1 that extend upward in the axial direction of the wheel from the spoke bottom wall 13a and spoke reinforcing plates 13b2 that curve from the axial direction of the wheel in the circumferential direction of the wheel from an end portion of the spoke side walls 13b1 in the axial direction of the wheel and extend in the circumferential direction of the wheel. Inner-side end portions of the pair of spoke side portions 13b in the radial direction of the wheel disposed on either side of decorative holes 15 in the circumferential direction of the wheel are linked by flat connection walls 18 in the circumferential direction of the wheel.
Sakashita, Yoshinobu
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