Originally Posted by oldschool65
ladies and gentleman, I have been in the brake industry for years.......and if you know anything about brake when you drill or slot a rotor you cause an interruption between the pad and the rotor. this causes, one, the gases of the pads to exit out of the swept area, two, it give the pads a constant
GRIP on the rotor WOW you will stop better!!!!!!
Yes, that is true when the brakes are hot enough to need the extra ventilation like road racing and spirited mountain runs but for daily street driving, the holes take away from surface area. The lower temps of street driving need more surface area to stop more effectively, not lower temperatures.
I would recommend drilled and or slotted rotors if the application needed it, but for a street driven car with minimal hard braking, it is strictly for aesthetic purposes.