I'm guilty of oversimplifying here. I was using the common concept of "warped brakes" rather than explaining how stock pads melt to the cute little rotors that don't dissipate enough heat, and eventually create hotspots that crack the rotor. The end result, either way, is you have a rotor that needs to be resurfaced or replaced every week.

I also forgot to include that I always use Axxis Metal Master pads when I upgrade to bigger/better rotors, which work great at high speeds, and only suffer a little in the squealing & no brake power around town department.

There's a great sticky on this topic at the top of this forum btw.

Also- Rear drums to rear discs on our cars is NOT an upgrade.