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Cross drill != crack rotors.
>I got some nice brembo rotors and when installing them, my mech. said that
>they will crack. "Its not IF they will crack, its WHEN it will crack?" This
>kinda scared me a bit. Q-list confirm this?
>From my personal experience from '92 onwards:
In both my '85 5000s and later in the '89 200TQ with the completely
stock brakes rotors warped like propellers in a few energetic stops in
street driving.
Later in the same '89 200TQ:
FR: cross-drilled, vented Brembo;
RR: cross-drilled, solid ATE;
SS Teflon lined brake lines;
PBR/Axxis pads;
German Pentosin DOT-4 brake fluid.
The car stopped _very_well_ on the street. Reasonably well on the track.
The rotors have never warped or cracked since.
My current '97 S6 which is [still] completely stock has a joke for
brakes in comparison with my old 200.
This car will eventually get the cross-drilled A8 rotors, Boxter brakes
and the SS lines.
The drilled rotors have a pronounced "flute" side effect. I.e. when
driving in the left lane next to a concrete divider while braking hard
you will hear a loud buzzing. It's the hot air that is escaping from
under the pads through the holes in the rotor. The whole rotor sounds
like a flute.
--
Igor Kessel
Two turbo quattros.