I've had Powerstop cross drilled and slotted. Warped within a year.
I've now had 2 full sets of of R-1 concepts (cross drilled/slotted) and the front's are warped in in record time. Nine months! This is with their brand of ceramic pads to boot. The back are in good shape, but still.
Brakes were bled and the break in procedures were followed. I have no hanging/frozen calipers. I'm just stumped. I've owned six Dodge vehicles over the years (this being #7) and I've never had a car eat rotors like this before.
My guess is that the rotors aren't the problem - that the problem is pads with "gummy" binders that unevenly film the rotors mimicking warped rotors. I used to have problems with what I thought were warped rotors. No matter what I tried, the brakes still pulsed. When I finaly realized that the pads were the cause and attacked *them* instead of the rotors, my braking problems disappeared (the break-thru for me came when an engineer at Frozen Rotors talked me into quitting using ceramic pads).
Those would be the NAPA Premium Rotors instead of the Performance Rotors that I pictured. I had a pair of NAPA Premiums on the 2002 R/T which worked fine for over two years.
There's also the NAPA Ultra Premium rotors (86777), which are painted (and may be one notch better as far as materials and processing - how do you know?) which aren't drilled or slotted.
Be aware that NAPA rotors are reboxed Raybestos - so you can use that fact for price shopping the same exact rotors. (NAPA Ultra Premium 8677 are Raybestos 76777). Also, consider the Centric 12063048 competing rotor. Rock Auto has Raybestos and Centric.
I have never liked Centric. I worked at a shop that loved to sell them to customers. They all sucked. For one, not one was even close to being true to shape or centered. Majority of them had to be re-cut out of the box before being bolted on the car or they would shake and/or pulse. Quite a few came back around 1,000 miles with center ribs splitting. They were okay or bad, but too much chance of bad IMHO.
ceramic pads are better but work alot hotter causing your warping...
For a given stop (i..e, energy dissipated), the same amount of heat is generated. From what you're saying, ceramics (if you can generalize) don't conduct the heat away from/out of the rotor as well as other materials. That's an argument not to use ceramics in my book.