Quote Originally Posted by hemmjo View Post

There are many things that cause rotors to warp. Before you do anything, read this;

https://www.crossdrilledrotors.ca/bl...-rotor-warping
Interesting, though not entirely accurate, cross-drilling and slotting may assist with cooling, but the main reason for doing such things is to vent the gases evolving from the brake friction material resins that actually grip (brake) the rotor, trapped gases are major cause of fade, slotted pads help too. My father was the Ferodo tech who developed the first slotted pads for a Jag D type racer in Southampton, using two hacksaw blades side-by-side in a standard hacksaw frame, initially for multiple leading edges to clear water as wet discs didn't work as well as drums, then in dry races the racer reported less fade with the 'wet' slotted pads. Having been better braked than the factory D types Ferodo sent an engineer to question what they were doing, soon after slotting pads became a manufacturing process.