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Old 04-14-2012, 09:07 AM   #12
old greg
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Quote:
Originally Posted by OrbitalEllipses View Post
Lighter aluminum calipers with 2pc floating rotors won't add that much rotating or unsprung mass if any at all.
I hate to break it to you, but those 4 piston calipers are going to be heavier than stock, and even if the rotors are the same or less weight, the weight saved is in the center of the disk while weight is added further out past the perimeter of the oem disk. Rotational inertia is proportional to radius^2; Larger diameter rotors mean less acceleration, there's just no way around it.
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