Aerodynamically efficient spoke design for a vehicle wheel

A wheel for a vehicle, comprising:

• an inner hub portion configured to receive a vehicle axle therethrough and defining an axis of rotation at a center thereof;
• an outer rim portion;
• a plurality of wheel spoke portions extending generally between the inner hub portion and the outer rim portion;
• the inner hub portion, the outer rim portions, and the plurality of wheel spoke portions cooperate to form a wheel outer surface having a plurality of turbine openings;
• wherein each of the plurality of wheel spoke portions has an outboard side adjacent the wheel outer surface, an inboard side opposite the outboard side, a leading side surface extending generally in a direction between the inner hub portion and the outer rim portion and between the outboard side and the inboard side, and a trailing side surface extending generally in a direction between the inner hub portion and the outer rim portion and extending between the outboard side and the inboard side in spaced relationship with the leading side surface and opposite the leading side surface;
• a plurality of clad spokes each overlying one of the wheel spoke portions, each of the clad spokes including an outboard surface overlying the outboard side of the wheel spoke portion, a leading side surface overlying the leading side surface of the wheel spoke portion, and a trailing side surface overlying the trailing side surface of the wheel spoke portion;
• and
• at least one of the leading and trailing side surfaces of each of the clad spokes has a concave shape arcing toward the other of the leading and trailing side surfaces substantially across its length to provide improved aerodynamic performance of the wheel.