i agree with kaiv at this point as well. i am having pretty good success with stock rotors and caliper with lines, pads, ducts, and fluid. i also drive in much lower temps than you and tend to do my track days in the cooler months as well because thats when it seems i have time. warm days are still only 80ish at most.
02 Tiag e46 M3|6MT|GC plates|MCS c.o.|GC bars|GC race control arms|GC bushings|BW eng. & tran. mounts|subframe kit|BW race shifter|BW Jaffster|Euro header|BW exhaust|K&N c.a.i.|Epic race tune|Rouge pulleys|Seibon CF hood|CSL bumper|apr gt 250 & splitter|ST-40|XR-2|SS lines|half cage|Recaro profi|Profi 2 harness|BMWpedals|BW studs|