
Drilled and slotted rotors we’re designed when the compounds in brake pads off gassed, almost all new pads do not off gas making dilled and slotted pointless, more steel on blanks will distribute heat and displace it the best, also newer material does bed to rotors still, even tho some pad manufactures will claim no or barely, squeaky cermic pads? bed them in, no more noises, except of course the decibal increase from the hardness of the ceramic pad