The specification denotes the configuration of the lug nuts or bolts used to safe a wheel to a car’s hub. Particularly for the mannequin 12 months cited, it describes the diameter of an imaginary circle drawn by the middle of the wheel studs or bolt holes. An instance could be a 5×114.3mm measurement, indicating 5 studs positioned on a circle with a diameter of 114.3 millimeters.
This measurement is essential for making certain wheel compatibility. Using the right specification ensures correct fitment, stopping wheel detachment, vibration, and potential injury to the car’s braking system and wheel bearings. Traditionally, this design aspect has developed alongside automotive engineering, reflecting developments in car efficiency and security requirements.