Using these Enkei RS05 - RR wheels is straightforward. First, make sure your vehicle is compatible with the 18x9.5 inches size, 5x120 bolt pattern, and 72.5 center bore. Before you install them, double - check the fit and if necessary, make the required modifications. When installing, follow the standard wheel installation process, tightening the bolts evenly. As for maintenance, clean your wheels regularly with a mild soap and water solution. Avoid using harsh chemicals as they can damage the matte gunmetal finish. Inspect the wheels periodically for any signs of damage, like cracks or bends. If you notice any issues, it's best to get them checked by a professional.