General Information On Replacing Worn PCCB Brake Discs

Three criteria governing the condition of the parts can make replacement necessary depending on the wear of PCCB brake discs: 

1. Surface changes in the brake disc friction surfaces (material fatigue/wear) at an advanced stage (indication of wear: associated friction surface damage > 1 cm² ).
2. Surface roughness of the brake disc friction surfaces too great (roughness depends on mileage and load).
3. Brake disc minimum thickness is not attained due to wear (material erosion due to friction).
   • In practice, all three forms of brake disc erosion usually occur.
   • Only in rare cases (in the case of long-term race driving brake loads/very high temperatures on the friction surfaces) does the surface change so quickly that a premature brake disc change has to be performed.
   • Blue discs on the brake disc chamber and/or strongly colored brake calipers indicate a long-term, sustained high load, on a racing circuit, for example.