gearchruncher
Well-Known Member
The heat ALWAYS has to go somewhere. A brake pad cannot "dissipate" heat without it going somewhere. There are three ways. Radiation, Conduction, or Convection. Why do you think a larger pad is able to avoid getting as much heat into the rotor or fluid? If you slowed the car from speed X to speed Y, you put a fixed amount of energy ("heat") into the brake system. Where do you think the energy in the pad goes if not the rotor or the caliper? The pad is buried in the middle of that whole system. There's some pretty simple physics here that says the "size" of the pad doesn't matter to the heat in the system.I think you’re a little lost with my comment about the stock pads. I said the pads are relatively small and thin, so they dissipate heat to the rotor fairly quickly (especially if it’s not designed to work at higher temp) that means the heat has to go somewhere. It has to go to the caliper pistons, and the rotor. The pistons heat up the fluid and the rotor heats up and vents the heat the best it can.
You're running $900 brake pads on the track. Your use case is not "spirited driving" on the street in an OEM car. There is no such thing as "the best pads" - only the best pads for exactly how they will be used, which with OEM cars includes things like driving at -40C and not tolerating squealing. Like I said, of course the stock pads are not track pads. RS29's are not street pads either (to the point of literally being illegal in the EU). But do you really think the DS2500's are so much better that every M3P owner should go spend $700 on brake pads right when they buy their car? That was the question in this thread.You’re not going to try and convince that the stock oem pads are better than those brands trust me man…
If you actually use up your stock pads, I fully agree there's better places to spend your money than the OEM pads. But that doesn't mean the OEM pads aren't pretty good pads for OEM, of that they will completely fall apart under any kind of aggressive use.