Crossdrilling DOES NOT provide a cooler rotor any more than plain, when you remove mass from an object that actually increases the temperature of what is left. I have a quote from the owner of Brembo saying they are strictly for cosmetic purposes. Cross drilling was originally done because of the outgassing of the pads used after disc brakes were first designed...we don't use those pads any more. The cracking with cross drilled rotors is caused from instantaneous changes in temperature...try putting boiling water in a frozen mug or vice versa and see what happens. Going through a water puddle with crossdrilled rotors could easily cause them to do the same thing.Originally Posted by yudalicious
Slotting cleans the surface of the pad, in a case where you've exceeded your brakes limits and have build up on the pad it is a cure. If you run the correct pad for the occasion then its no big deal and not needed.





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