The Aerodynamic Steer Cover from Alcoa Wheel Products features a patent-pending design that is engineered specifically to push air away from the tire/wheel and vehicle, limiting aerodynamic drag. Backed by rigorous testing, including Computational Fluid Dynamics, wind tunnel, and test track analysis, the cover enhances performance as compared to a full-wheel cover or no cover at all. Features and benefits include verified fuel savings of up to 0.35 gallons of fuel per 1,000 miles; estimated $120 annual fuel savings per truck based on 100,000 miles per year; two-year warranty; compatible with all 10 by 285.75mm bolt circle wheels; and a durable retention system. Available in matte black and chrome finishes.