The configuration by which a wheel affixes to a vehicle’s hub is determined by the arrangement of its lug studs or bolts. Specifically, the term refers to the diameter of the circle formed by these fasteners and the number of these fasteners present. For example, a “6×139.7” configuration indicates six lug studs positioned on a circle with a 139.7mm diameter.
Understanding the lug configuration is crucial for ensuring compatibility when replacing or upgrading wheels. Using the incorrect specification can lead to wheel instability, damage to the vehicle, and potential safety hazards. Historically, this specification has evolved alongside vehicle design, reflecting changes in vehicle weight, braking systems, and performance demands. Proper identification ensures secure wheel mounting and optimal vehicle performance.
