5x100 wheel spacers are designed for vehicles with a 5-lug wheel pattern and a 100mm bolt circle diameter. These spacers are typically used to widen the track of the vehicle, improving handling and stability, particularly when upgrading to larger wheels or tires. They are commonly found in vehicles like certain models of Subaru, Toyota, and Volkswagen. Made from durable materials like aluminum, 5x100 wheel spacers can also enhance the vehicle's appearance by giving it a more aggressive stance, as long as they are properly installed to maintain safety and performance.