Wheels:
It is strongly recommended to always read the label of the products being used to clean your wheels and assure the product is safe for aluminum and particularly the finish of your wheels. As a rule of thumb, it is always best to use the same chemicals you use to wash your car on your wheels. If it's safe for your cars finish it's safe for your custom wheels.
Tires:
Air pressure of your tires should match that of what the factory recommends for your vehicle. It is also recommended to rotate your tires every 3,000 miles (for non-staggered) to maximize the life of your tires.
Wheels & Tires:
Upon installing your new wheels, it is always recommended to re-torque after the first fifty miles and periodically check every so often.