Originally Posted by GXP_Vince
I believe its better to have the slots go all the way out to the edges to release the gas that is produced when stopping.
Correct. Or they're next to worthless.
In addition, every hole 'drilled' increases the risk of rotor cracking, reduces braking surface area, and prevents you from getting your rotors turned by most brake shops. There'* too much liability for them. There are no brake shops in my area that will turn drilled rotors any more unless they are OEM-equipped.
Do NOT run drilled UNLESS:
1. You increase the rotor diameter to make up for the decreased friction area.
2. You get brakes that have the holes CAST into the blanks, never drilled after casting.
Get slotted only if:
Slots go all the way to the edge.
I very much like my slotted rotors with ceramic pads. I run Powerslots (blanks are Brembo) and Raybestos ceramic pads.
Moving to Performance and Brainstorming. This isn't a mechanical 'problem'.