Directly from Wilwood's site;
Why are some rotors drilled or slotted?
Rotors are drilled to reduce rotating weight, an issue near and dear to racers searching for ways to minimize unsprung weight. Drilling diminishes a rotor's durability and cooling capacity.
Slots or grooves in rotor faces are partly a carryover from the days of asbestos pads. Asbestos and other organic pads were prone to "glazing" and the slots tended to help "scrape or de-glaze" them. Drilling and slotting rotors has become popular in street applications for their pure aesthetic value. Wilwood has a large selection of drilled and slotted rotors for a wide range of applications.
And a quick visit to AP racing;
RD = Radiused drilled,
(cross drilled but with a radiused run out to reduce noise and improve life compared with standard drilling patterns).
Mainly used for aesthetic reasons on road applications
D = Cross drilled,
drilled holes chamfered).
Still preferred with some pad materials but can compromise disc life.
Thanks for all the input, im gonna see about getting them, if and when i do i will post about them
Originally posted by Nick S
Thanks for all the input, im gonna see about getting them, if and when i do i will post about them
If your gonna post a review, make sure to test with the new pads on your stock discs and then the new discs. I'm curious how aggressive the pads are.
can do, i was thinking about going to a parking lot or back road and checking brake distances and all that. ill see though, need the time.