The 17 x 9 inch black alloy wheels with the specifications PCD 5x100, 5x114.3, ET 10mm offset, and CB 73.1mm are described as follows:
 
 
Size (17 x 9 inches):
 
 
Diameter: The wheel has a 17-inch diameter.
 
Width: The wheel is 9 inches wide.
 
This size is typically suitable for performance cars, SUVs, or modified vehicles, providing better handling and a more aggressive look.
 
 
 
 
PCD (Pitch Circle Diameter 5x100, 5x114.3):
 
 
PCD refers to the bolt pattern, which is the number of bolts and the distance between them. This wheel has two different bolt pattern configurations: 
 
5x100: 5 bolt holes, spaced 100mm apart.
 
5x114.3: 5 bolt holes, spaced 114.3mm apart.
 
 
 
These bolt patterns are common for various passenger cars, SUVs, and performance vehicles. For example, 5x100 is found on some Toyota, Subaru, and Volkswagen models, while 5x114.3 is common on Japanese cars like Honda, Nissan, and some American cars.
 
 
 
 
ET (Offset 10mm):
 
 
ET (Offset) refers to the distance between the wheel's mounting surface and its centerline. A 10mm offset means the wheel’s mounting surface is pushed 10mm outward from the centerline.
 
A 10mm offset is generally used for vehicles that need a slightly wider stance, offering a better appearance and potentially improved stability.
 
 
 
 
CB (Center Bore 73.1mm):
 
 
CB (Center Bore) is the diameter of the hole in the middle of the wheel that fits over the vehicle's hub. This wheel has a 73.1mm center bore.
 
If the vehicle's hub diameter is smaller, a hub centering ring can be used to adapt the wheel to the vehicle.
 
 
Summary:
 
Wheel Size: 17x9 inches (diameter x width).
 
PCD: 5x100 and 5x114.3 (two different bolt pattern options).
 
ET (Offset): 10mm (mounting surface 10mm outward from the centerline).
 
CB (Center Bore): 73.1mm (center bore diameter).
These wheels are suitable for various passenger cars, SUVs, and performance vehicles, offering flexibility with different bolt pattern options, and providing an enhanced appearance and driving performance.