The dimensional arrangement of the lug studs or bolt holes on a vehicle’s wheel hub is a crucial specification for wheel fitment. This measurement, typically expressed with two numbers (e.g., 5×115), indicates the number of studs/bolts and the diameter of the circle they form. An incorrect measurement will prevent the wheel from mounting properly and safely.
Accurate specification is essential for compatibility and safe operation. Selecting wheels with the correct dimensional arrangement ensures proper load distribution and secure attachment, preventing wheel detachment and potential accidents. Historically, variations existed across vehicle manufacturers and models, necessitating precise measurement and verification when replacing or upgrading wheels. This careful attention to detail maintains structural integrity and driving stability.