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Originally Posted by sperry
Dean, there is a big sticker on the Axxis Ultimates that come with the StopTechs that reads "NOT FOR TRACK USE". They will fade at high temperatures. And on smaller brakes like the stock WRX ones, at track temperatures they will turn into charcoal and you will wear your rotors instead of the pads. I've still got my rotors that were destroyed at Reno-Fernley if you'd like to see em. 
Also, stick a feather in *my* hat since I've never heard of Fedora pads... just the Ferrodo ones that Matt's got. 
Finally... did EBC change their Greens, or do they still put cracks into rotors? |
I have a better thought on where you should stick the feather.
I appear to have Linux on the brain Linux = Fedora... And I think it is only one "r" in Brakes = Ferodo.
You are right, the Ultimates in the stock WRX calipers are not up to 30+ minute sessions at a high speed track like RF. I beleieve I said as much if you read my post...
I'm still not sure how you managed that. Usually an overheated pad will crumble to bits, especially in a cross drilled, or slotted application and then the backing plate eats the rotor. I never did get to see them, and would be interested in doing so.
That said, I did run the Ultimates in my Stoptechs at Infineon for 2 days in addition to the 1 day Mike E. ran them at whatever track he was at and all the street miles both of us put on them, and they are still in good shape as are the rotors. I would not do so with R compounds, but up to Azenis Sports, that is my experience, and I would expect the STI Brembos to be similar. They are rated to 932 degrees which is equivelent to mild track usage on a brake system capable of disipating a reasonable amount of heat which we know is an issue with the stock WRX setup.
All the EBC formulas have been updated. The older greens did tend to cause the rotors to occasionaly appear grooved after heavy use, but cracking was not an issue, and they evened out after some street use. The new fomula wears as smooth as any other pad I have used. The Reds have always been fine. The biggest advantage of the greens IMHO is the awesome cold stopping. The reds aren't quite as good stone cold, but last a little better, and handle heat better, so are better for hard track use. But again, I think the emproved heat capacity of the larger Stoptech/Brembo systems should allow the greans to be used for light track use. I ran the greens on the stock WRX setup at Laguna last year, and they did very well.
I still think the EBCs are the best bang for your buck in the pads I have tried so far, and in many respects outperform pads twice their price.
Mike K, what do you think of your EBC reds?
To stop quickly, and have reasonable pad life in high performance applications, both the pad, and the rotor must wear in a classic steel rotor & composite pad system. I have run probably 20 different pad/car combinations in track and autocross use now, and without exception, the better pads wear rotors more. Wearing out rotors is the price of good stopping power. Expect to replace rotors every 500-1500 track miles or 2-5 sets of performance pads, and if you get more, consider yourself lucky.
Learning to brake smoothly, and manage your brakes is probably the best way to make both your pads, and rotors last.