Wheel rims are the outer edges of a wheel that hold the tire in place. They are typically made from materials like aluminum or steel and come in various sizes and designs to fit different vehicles. Rims play a crucial role in supporting the weight of the vehicle and ensuring proper tire performance. Rims are often categorized into two main types: steel rims and alloy rims. Steel rims are generally more durable and cost-effective, while alloy rims are lighter and can enhance a vehicle's appearance. Proper maintenance of wheel rims is essential for safety and performance on the road.