The configuration of studs or holes on the wheel hub dictates which wheels are suitable with a selected car. This association is outlined by two numbers: the variety of studs/holes and the diameter of the circle on which they’re organized. For instance, a 4/156 specification signifies 4 studs positioned on a circle with a diameter of 156 millimeters. Right matching of this specification is essential for protected and safe wheel mounting.
Making certain dimensional compatibility between the wheel and the car’s hub is paramount for security and efficiency. An incorrectly matched specification may end up in wheel instability, vibration, and probably catastrophic failure of the mounting {hardware} or wheel. Understanding the historic evolution of this specification on particular automobiles can also be helpful for house owners in search of to take care of or improve their machines.