PURPOSE: To obtain a wheel for a vehicle having no casting defects by casting an Al alloy having a specified compsn. into an intermediate product and by subjecting the product to primary heat treatment, spinning, secondary heat treatment, aging and finish working.

CONSTITUTION: An Al alloy consisting of 5.0W9.0% Si, 0.15W0.4% Mg, ≤0.20% Ti, ≤0.30% Fe and the balance Al is die-cast into an intermediate product for a wheel for a vehicle. The product is annealed by holding at ≤550°C soln. heat treatment temp. for 1W10hr and slow cooling to ordinary temp. It is spun, held at ≤550°C soln. heat treatment temp. for 1W10hr and water-cooled to ordinary temp. The product is then heated to 140W250°C, aged for 0.5W5hr and finished by mechanical working.