The configuration of bolt holes on a BMW 650i’s wheel hub and the corresponding wheel itself, determining how the wheel attaches to the vehicle, is a critical specification. A 5×120 designation, for instance, indicates five bolt holes positioned on a circle with a 120mm diameter. This measurement must precisely match between the wheel and the vehicle hub for safe and secure wheel mounting.
Adherence to the correct specification is paramount for vehicle safety and performance. Using wheels with an incorrect specification can lead to wheel detachment, causing accidents and potentially severe damage. Historically, vehicle manufacturers have adhered to specific specifications to ensure compatibility and safety within their models and sometimes across model ranges. This allows for standardized wheel production and selection.
