This specification refers to the arrangement of mounting holes on a vehicle’s wheel hub and the corresponding wheel. It indicates that the wheel is secured to the hub using six lug nuts, arranged in a circular fashion, specifically designed to match the dimensional standards of certain Toyota vehicles. As an example, a wheel designed with this arrangement will only fit a vehicle with a matching hub configuration.
Adherence to precise engineering standards ensures proper wheel mounting, which is crucial for vehicle safety and performance. Correct fitment prevents wheel wobble, uneven tire wear, and potential mechanical failure. Historically, variations in these configurations have been linked to specific vehicle types and weight classes, often reflecting the load-bearing requirements and intended use of the vehicle.