Define the reference on the truck
Capture the axle position, tire size and any readable wheel markings. The same diameter can be offered with different pilot geometry or offset. Give suppliers an approved drawing or a current reference part number, and ask them to mark every dimensional assumption that needs confirmation. Record wheel diameter and rim width in inches, and label the pitch circle diameter and center bore with their units. A hub-centric installation still needs review of the pilot and fastening interface.





