02/06/2023
The diameter of the central hole is a parameter that does not need additional explanation. It is usually referred to as "Dia", "DIA" or "D" in the list of disk specifications. This is also an extremely important indicator: if the central hole of the disc is smaller than required, the disc simply cannot be installed, and if it is larger, then centering rings will be required to center the disc on the hub.
Many people mistakenly believe that when installed, a disk with a too large center hole will center itself on the hub due to the tightening of the bolts, but this is not the case. Accordingly, the beating and vibration that do not disappear after balancing the wheels is a reason to check the coincidence of the diameters of the central hole of the disk and the hub and the presence of centering rings, if necessary.
