In 24k miles I've manage to warp 2 sets of front OEM rotors, a set of slotted R1Concepts front rotors, and 2 sets of OEM rear rotors.
I'm now using R1Concepts slotted/drilled rotors all around - Steve warrantied the fronts for me and I bought the rears and new pads.
Mine were warped within about 8-10 months ... I forget exactly ...
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Mine: '13 Mustang GT, Sterling Gray, 6-spd man, Recaros, Track Pk, 2.3L Whipple, 608 RWHP, 517 RWTQ
Fiancee's: '08 Mustang GT500, White/blue stripes, '13 TVS & injectors, FRPP twin-65mm TB, JLT 123mm CAI, 643 RWHP, 608 RWTQ
Previous: '07 Charger R/T AWD, heads/cam, a few other things. 355 AWHP, 370 AWTQ