The specification denotes a wheel mounting configuration steadily encountered on heavy-duty autos. The “8” signifies the variety of lug nuts or bolts used to safe the wheel to the car’s hub. The “170” represents the diameter, in millimeters, of the circle upon which these lug nuts are positioned. This dimensional attribute is essential for making certain correct wheel set up and secure operation. Some Chevrolet vehicles, notably these within the heavy-duty vary, might make the most of this configuration.
Appropriate wheel fitment is paramount for car security and efficiency. Using the suitable bolt circle diameter ensures that the wheel is centered accurately on the hub, distributing load evenly and stopping stress on the lug nuts and wheel studs. Historic context signifies that this sample gained prominence as truck producers sought to accommodate heavier payloads and elevated towing capabilities, necessitating extra strong wheel mounting options. The implementation of a exact and standardized sample contributes to interchangeability and simplifies wheel choice processes.