TRUE RO­TA­TION

Classics Monthly - - Workshop -

The runout of brake discs can have an ef­fect on the ride qual­ity. The amount of runout can be mea­sured with a dial gauge and mag­netic stand, as shown here. Depend­ing on the car, around 0.06mm of runout in the brake disc is ac­cept­able, but it could be more. It may be pos­si­ble to re­duce this by re­mov­ing the disc and clean­ing the hub’s mat­ing sur­face.

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