The specification that determines how a wheel is affixed to a vehicle’s hub is a critical factor for compatibility and safety. It is expressed using two numbers: the number of lug bolts or studs and the diameter of the circle they form. For example, a “5×115” measurement indicates a five-lug configuration on a circle with a diameter of 115 millimeters. Proper wheel fitment is essential to ensure secure attachment and prevent wheel failure.
This measurement significantly influences vehicle performance and safety. Selecting wheels with an incorrect specification can lead to wheel detachment, causing accidents and potential injury. Historically, vehicle manufacturers have utilized various configurations, necessitating careful attention to this detail when replacing or upgrading wheels. Adherence to the correct specification ensures optimal weight distribution and handling characteristics, preserving the vehicle’s intended performance.