Quote:
Originally Posted by admranger
that has less surface area than a stock rotor
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The (cast "drilled") 380mm rotors have more surface area (and girth) than the stock 355mm 4.6iS rotors, FYI.
Now, show me a blank 380mm friction ring for the Brembo GT hat and I'll buy you a beer.
Quote:
Originally Posted by admranger
FWIW, we've had X5's driven at several driving schools that I instruct at. One, when it first came out, with the dealer owner, who is a race car driver himself, driving it around the track with 3 passengers. Lap after lap of E-ticket rides and no brake problems of any kind.
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Not all track conditions are the same. (repeated downhill braking, etc.)
Quote:
Originally Posted by admranger
I have run more brake fluid through my vehicles than most people. It is a byproduct of from having raced BMWs for over a decade. I never needed $80/liter brake fluid when I raced (Motul RBF600 was fine) so I just don't see why anyone would need it for an X5.
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Noted.