Mandarinsolara wrote:you sure they dont offer any benefits?
thats weird... maybe they should take them off all of the scca racecars and formula one cars.
BradOwens wrote:r u sure?? ive heard the increased size dosent help much but drilling and slotting does? hmm weird
a bigger rotor will make improvements, but removing mass from a stock sized rotor will not make it better at stopping, which is basically the changing of kinetic energy (forward momentum) into heat. a more massive rotor is more efficient heat sink.
drilled rotors are more prone to cracking and stress fractures due to the differences between cooling rates at the hole's edge and the solid part of the disc. and that is even the case with forged, chamfered c/d rotors, now imagine swiss cheesing your current oem rotors....
im too lazy to dig up all the sources of this info, it was discussed ad nauseum months ago. but here is a little discalimer about a reputable brand of oem size cross drilled rotors (brembo) from tirerack.
http://www.tirerack.com/brakes/brakes.j ... lled+RotorIMPORTANT REMINDER: Slotted, drilled or dimpled rotors offered as OEM replacements should not be considered appropriate for high-speed track use.
While grooved, drilled and slotted rotors offer an enhanced appearance and add some resistance to the boundary layer of gasses that can build up between the pad and rotor, they are not designed to withstand the extreme temperatures that are produced on the racetrack. If they are used on the track, it is very important that the rotors be carefully inspected and should not be driven on if even minor signs of deterioration are seen. Note, too, that if these products are used on the track they are not warrantable
p.s. I have no idea why they even mention the boundary gases considering brake pads havent outgassed since the 1950's.