Quote:
Originally posted by 911GT2
That's the thing: I don't believe they're only for looks.
Porsche or Ferrari wouldn't use them for looks. Look at their history: they've never done something solely for looks.
And while most cross drilled rotors do tend to crack easily, most don't so long as they're drilled properly (i.e. chamfered). Straight drills cause pressure points which crack easily, chamfered spreads the load.
What I'm basically trying to get across is that they're better over a period of hard braking, but they definitely won't decrease your braking distance.
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Next time you slide to wide thru a corner, will the first thought in your head be "if I only had that bose radio from the 911, and the memory seats, I would ripped that corner like I was on rails"? That would go with your theory that everything on a porsche is for the track.