Use what the pros use. Carbon fibre composite plain brake rotors used on F1 cars. No slots or holes. Slots and holes are just for looks mostly.
They were only useful to slot or drill rotors in the 50s when abestos pads were still used and the pads would glaze over fast so the drills and slots were used to shave new material off the pads. If you want a brake upgrade increase your surface area aka rotor size and pads, not take away surface area but cutting holes in it.
Last edited by Joeggernaut; 07-12-2011 at 10:23 AM.