"Alloy rims" refers to the wheels of a vehicle that are made from a combination of metals, usually a mixture of aluminum and other materials. These rims are sturdy, light, and often more visually appealing than traditional steel rims.
The look of the family van is completed with 19 inch alloy rims which are available in two designs. (abt-sportsline.de)
The 15 - inch steel and alloys come standard, but customers can opt for two - tone, 10 - spoke alloy rims in either 16 - or 17 - inch sizes. (topspeed.com)