Choosing the proper brake rotor is determined by the vehicle you drive and how you drive it. The majority of vehicles produced will have solid vented rotors. However, some high-performance vehicles like BMW, Mercedes-Benz and Audi are built with slotted or cross-drilled rotors, which are also vented.
If you were happy with your stock rotor's performance and stopping power, then direct O.E. replacements such as Centric Plain 120 Series Rotors , Centric High Carbon Plain 125 Series Rotors or Brembo Replacement Rotors would be a good choice.
Vehicles built from the factory with solid vented rotors may cause you to be unhappy with the stopping power, in that case, you may benefit from an upgraded rotor. Additionally, if you would classify yourself as a more spirited or aggressive driver I would recommend upgrading your rotors. The most common upgrade is replacing your solid rotors with either slotted or drilled rotors.
Under high heat and heavy stopping conditions, the rotor actually gets so hot that when the brake pads and rotors make initial contact, the pads release exhaust gases from road grime, water and overheating. The small air bubbles that form between the pad and rotor contribute to a spongy pedal feel. The slotting or drilling of brake rotors gives those gases a quiet way to escape; thus allowing the pad to make quicker contact with the rotor and provide you a stiffer and more precise pedal feel. Upgrades would include Brembo rotors such as the Sport Drilled and Sport Slotted, StopTech's SportStop Drilled Rotor, DBA's 4000 Series T3 Rotor and 5000 Series T3 2-Piece Rotor and Power Slot's Power Slot Rotor.
Whether you're looking for Brembo brake rotors or another brand, you can shop by vehicle to find the replacement option that's right for your application.
Upgrading a vehicle's braking system is one of the easiest ways to increase driving performance and decrease lap times for any track event. The most common mindset a driver has is: "I need to make my track car go faster," but top-speed or acceleration is only half of the battle. Just because a track car is the fastest doesn't mean it'll finish first.
The fastest car on the track will get you from corner to corner faster, but if the braking system is lacking in power the driver will need to brake sooner and for longer than a slower competitor with an upgraded braking system. Therefore, while you may be blazing by competitors on the straight-aways or make up time in between turns in an autocross event, the car with the better stopping power can carry a higher speed for longer into a turn, thus decreasing overall lap times. Decelerating is just as important to a track car as accelerating.
The easiest way to upgrade the braking system on any track car is to switch to a dedicated track only pad. These pads are not intended for street use as the friction material is too aggressive for everyday use, creating more brake dust and noise than your typical brake pad. However, they provide an unparalleled amount of stopping power that no street pad can match.
For lower speed autocross events and casual lapping days, Hawk has the Blue 9012 Track Only Pads and slightly less aggressive Black Track Only Pads. If you'll be autocrossing, lapping or road racing at higher speeds then consider the Hawk HT-10, DTC70, HT-14 and DTC60 pads.
Find brake pads online for your track vehicle when you shop by vehicle.