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Corvette
C7 Forum
CCB Brakes - Frequency of weighing rotors?
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<blockquote data-quote="cdnrx1" data-source="post: 211362" data-attributes="member: 2880"><p>The direct answer to this question is - the weight of each rotor should be checked after each track day, as recommended by Brembo, or, at a minimum, when replacing the break pads as per the owner's manual.</p><p></p><p>CCM (ceramic composite material) rotors are subject to 2 different types of wear. 1 - thermal wear and 2 - mechanical wear. With the former, particularly under track conditions, the carbon fibers will oxidize due to being subjected to constant high temperatures and this causes a reduction in mass resulting in weight loss. With the latter, the mechanical action of the pad causes a reduction in the thickness of the rotor. The total wear of the rotor is determined by the combination of these two factors and the predominance of one type or the other depends on the type of use the vehicle is subjected to. IE: daily driver, track and / or a combination of driving uses. However, if the vehicle is frequently tracked this would become the priority in determining the maintenance schedule because of the extreme conditions.</p><p></p><p>The pad wear that you're experiencing is normal given the type of driving that you do. As for other wear indicators of the rotor, look for edge chipping (outer edge and vent holes ), surface cracks, particularly between the vent holes and excessive pad material transfer - this can clog vent holes and / or create excessive material build-up but it depends a lot on the brand / type of pad you're using. The weight of the rotors is marked on each one. Obviously, replace the rotor when at or below the minimum. Check the minimum thickness, should be engraved on the metallic bell or see the service manual.</p><p></p><p>Hope this helps.</p><p></p><p>Best regards</p><p>Ross</p></blockquote><p></p>
[QUOTE="cdnrx1, post: 211362, member: 2880"] The direct answer to this question is - the weight of each rotor should be checked after each track day, as recommended by Brembo, or, at a minimum, when replacing the break pads as per the owner's manual. CCM (ceramic composite material) rotors are subject to 2 different types of wear. 1 - thermal wear and 2 - mechanical wear. With the former, particularly under track conditions, the carbon fibers will oxidize due to being subjected to constant high temperatures and this causes a reduction in mass resulting in weight loss. With the latter, the mechanical action of the pad causes a reduction in the thickness of the rotor. The total wear of the rotor is determined by the combination of these two factors and the predominance of one type or the other depends on the type of use the vehicle is subjected to. IE: daily driver, track and / or a combination of driving uses. However, if the vehicle is frequently tracked this would become the priority in determining the maintenance schedule because of the extreme conditions. The pad wear that you're experiencing is normal given the type of driving that you do. As for other wear indicators of the rotor, look for edge chipping (outer edge and vent holes ), surface cracks, particularly between the vent holes and excessive pad material transfer - this can clog vent holes and / or create excessive material build-up but it depends a lot on the brand / type of pad you're using. The weight of the rotors is marked on each one. Obviously, replace the rotor when at or below the minimum. Check the minimum thickness, should be engraved on the metallic bell or see the service manual. Hope this helps. Best regards Ross [/QUOTE]
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Corvette
C7 Forum
CCB Brakes - Frequency of weighing rotors?
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