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Originally Posted by todamax
My research has led me to believe that the answer is neither. 
For daily use, the best thing is blank. They will last the longest and perform just fine. For track/autocross use (not many of us really do this) its a toss up as to which is better. Lots of people say that drilled *WILL* crack. The grooved/ slotted are also at risk, but it seems that it is a bit lower. Slots that are cut all the way through also will crack, but I've not see many of those anymore.
For me its more about the zinc wash. I know the Brembo sports will be great quality, I want them looking as good as possible for as long as possible. I do not need the benefits that slots or holes give, as I mostly drive it for my commute. I do only put about 4-5 thousand miles a year on this car, so I bet they will last me a while. |
That is some good info. However, the Brembo drilled or slotted are cast-in at the Brembo factory. There are many companies that purchase the Brembo blanks and drilled and/or slot them themselves or have a third party do it. Those are the rotors that WILL crack and give you lots of problems. The authentic Brembo drilled or slotted will not crack, and our backed up by Brembo. Hope that helps a bit
Thanks again,
Jeff