A drilled rotor system is more efficient at dissipating heat and it's lighter weight, but it's not as good at stopping a car. Carbon ceramic and carbon carbon rotor systems are better at stopping a car.
parking meter
suitcase
bird
handbag
dog
Heart_murmur
Speech_synthesizer
Tools
Fowl
Drip
Reverberation
Chink
Drum
Electronic_music
Male_speech