Using these COBB ST - 01 wheels is straightforward. First, check the fitment for your vehicle to ensure they'll work properly. If you're unsure, use the provided clearance template to print and confirm. When installing, make sure to follow the standard wheel - installation procedures recommended by your vehicle's manufacturer. As for maintenance, clean the wheels regularly with a mild soap and water solution. Avoid using harsh chemicals that could damage the white finish. Inspect the wheels periodically for any signs of damage like cracks or bends. If you notice any issues, stop using the wheels and consult a professional. And remember, these wheels are sold individually, so if you need a set, order the appropriate number.