To suppress the generation of casting defects in the case a casting having a cylindrical part is cast by the charge of molten metal from a side gate.

The die of casting a wheel for a vehicle comprises: a disk part forming space; and a rim part forming space 20b (cylindrical part forming space) connected to the periphery of the disk part forming space and elongating from the periphery to the upper part. A side part runner is connected to the rim part forming space 20b, and the opening edge of the side part runner to the rim part forming space 20b forms a side gate 25x. When the runner part 25b in the vicinity of the side gate 25x in the side part runner is tilted to the normal of the circumferential face in the rim part forming space 20b when being observed from the upper part, and the crossing angle Θ between the runner part 25b and the normal N on the circumferential face of the rim part forming space 20b is 5 to 30°. The lower face 25L of the runner part 25b is tilted so as to lower toward the rim forming space 20b, and the boundary between the same and the outer circumferential face of the rim forming space 20b is R-chamfered.