1. Drilled brake rotor
   Slotted brake rotor
2. All of the above

There are two major types of high-performance brake rotors -- drilled and slotted.<a href="http://auto.howstuffworks.com/auto-parts/brakes/brake-parts/brake-rotors.htm">How Brake Rotors Work</a>

1. Drilled brake rotors
   Slotted brake rotors
2. All of the above

Drilled brake rotors, as the name implies, have holes drilled in them. <a href="http://auto.howstuffworks.com/auto-parts/brakes/brake-parts/brake-rotors.htm">How Brake Rotors Work</a>

1. To help dissipate heat
   To help eliminate gas built up
2. All of the above

Drilled brake rotors have holes for two reasons. The first is heat. When the brake pad grabs the rotor, it creates friction, which creates heat. If that heat can't escape, it leads to brake fade, which reduces the brakes' stopping power. The second reason is gas build up. <a href="http://auto.howstuffworks.com/auto-parts/brakes/brake-parts/brake-rotors.htm">How Brake Rotors Work</a>

1. Slotted
   Drilled
2. Polished

When you're talking about high performance rotors, slotted, not drilled, rotors are the choice of most racers. <a href="http://auto.howstuffworks.com/auto-parts/brakes/brake-parts/brake-rotors.htm">How Brake Rotors Work</a>

1. The holes weaken the rotors
   The holes cause the rotors to rust
2. Debris gets stuck in the holes

The downside of using drilled rotors on your vehicle is that all of those holes tend to weaken the rotors -- just like punching holes in the wall of a house would weaken the wall. After repeated stressful driving, the rotors can even crack. <a href="http://auto.howstuffworks.com/auto-parts/brakes/brake-parts/brake-rotors.htm">How Brake Rotors Work</a>

1. They wear down the brake pads faster than other rotors
   They crack easily
2. They over-heat easily

Slotted brake rotors are great for high-performance braking; however, you'd better be ready to change the brake pads more often. <a href="http://auto.howstuffworks.com/auto-parts/brakes/brake-parts/brake-rotors.htm">How Brake Rotors Work</a>

1. Drilled
   Slotted
2. None of the above

Most street driven motorcycles come equipped with drilled brake rotors. <a href="http://auto.howstuffworks.com/auto-parts/brakes/brake-parts/brake-rotors.htm">How Brake Rotors Work</a>

1. Drilled
   Slotted
2. None of the above

Most high-performance or on-track bikes will typically use slotted rotors. <a href="http://auto.howstuffworks.com/auto-parts/brakes/brake-parts/brake-rotors.htm">How Brake Rotors Work</a>

1. Heavier than other brake rotors
   Larger than other brake rotors
2. All of the above

Because trucks are so big and heavy, their brake rotors need to be larger and more powerful to compensate for the extra stress. <a href="http://auto.howstuffworks.com/auto-parts/brakes/brake-parts/brake-rotors.htm">How Brake Rotors Work</a>

1. To apply pressure to the brake pad
   To control the flow of brake fluid
2. To control the brake lines

Brake calipers play a vital role in a vehicle's braking system because they apply pressure to the brake pads, which, in turn, apply pressure to the brake rotors to slow or stop the vehicle. <a href="http://auto.howstuffworks.com/auto-parts/brakes/brake-parts/brake-rotors.htm">How Brake Rotors Work</a>