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      04-17-2008, 11:16 PM   #33
OC ///M
Dr. Octagon
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Drives: Moonstone e92 M3
Join Date: Feb 2007
Location: South County

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Originally Posted by swamp2 View Post
I'm not so sure. I have not done any weighing of brake components but consider these facts.

-The OEM brake caliper is aluminum.
-The OEM rotors are composite and floating with aluminum hats for less thermal stress and less weight.
-Rotating mass is bad indeed but having sufficient mass in your braking system is crucial for not cooking things.
-BBKs are just that BIG. This means larger and potentially heavier calipers and larger diameter and again potentially (likely) more rotor mass.

I am quite keen to hear about an apples to apples weight comparison of the OEM brakes vs. Brembo.

I am just commenting from my experience when I removed the suspension, the brake assembly felt much heavier than any I have handled before. (I had to double-up on it to keep it from falling to the floor.) I will have more info later because I will be weighing each component (stock and Brembo BBK) to compare the real numbers.
OC ///M

2013 E92 M3 Individual
Sold: 2011 E92 M3 SSII | Sold: 2008 E92 M3 SSII | Into a Wall: 2008 E92 M3 SSII | Sold: 2007 E92 335i JB