BMW F21 M140i EBC grooved disks (front)

BMW F21 M140i EBC Racing Grooved Discs

One point to consider before making your choice of sport rotor is the air noise that can be noticed with sport rotors. With all slotted rotors there will be an increase in air noise as the rotor passes beneath the pads under normal driving and braking. Some people like this kind of “Turbo” sound and others do not.

For this reason EBC produce two ranges of sport rotors, the 3GD or GD series being discussed here are the noisier of the two designs, our sister range the USR sport rotor range is much quieter yet offers similar performance values.