Last year I ran the Tail of the Dragon and when I got back to the hotel/lodge my wheels were black with brake dust and that was with the stock pads. I just got back from running the Dragon this year and I drove there and ran the dragon and drove back and vitually no brake dust at all on my wheels. I don't have an srt but I wouldn't think that would be the difference. I also got mine from Brakeworld in December 2007.