drilled rotors can crack between the holes when overheated in extreme cases. Slottoed rotors dont have that problem
I understand the problem with fading drum brakes doesn't have to do with m***. The drums get hot, expand and the shoes don't travel far enough to do a whole lot of good.
I, too, have read that outg***ing is no longer a primary concern due to changes in pad material/bonding agents (Baer & Wilwood's take (new to me) on the issue supports this) and that the primary reason for them in OEM & aftermarket is asthetics now.
I don't think greaseballs question is dealing with drilled disc brake rotors but drilled brake drums..which in my opinion should be a good thing as it allows a trapped layer of hot gas and dust to escape for a more positive and cooler braking surface..anyone want to expound, pound on me, for this?
How extreme do you want ? I spent some time looking at a Mercedes Gull Wing last week where the owners son ( rich... spoiled ...)drove it so hard on the street he ripped the linings from the shoes ( which are almost 3" wide) and heated the wheels so much they are BLUE in the center and he melted the lead balance weights...imagine how much heat was generated in the brakes to melt balance weights ON THE OUTSIDE OF THE RIM ????? This happened on the street not a race track . The dent happened when the owners mechanic was backing it and suddenly discovered it no longer had brakes after dip**** parked and didn't bother telling anyone.