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      01-15-2010, 05:44 PM   #114
AP Racing - Chris_B
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Drives: E34 540i/6, others
Join Date: Jan 2009
Location: SoCal

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Quote:
Originally Posted by STALKER View Post
Would you happen to know which kit is lighter? Which has a stiffer caliper?
I do like the AP rotor better, but I seem to like the Brembo caliper a bit better.
Pedal feel is also a big concern with any aftermaket brake set up.
I don't have all the parts here at the moment to do a proper comparison. If someone has the Brembo weights, the AP numbers are easy to come by.

I do know the current Brembo caliper is a monoblock design, which means it could be a bit lighter. Of course being a monoblock, it will give up in stiffness to a proper 2-piece caliper design. Also, the pads are a bit easier to change on the AP caliper if that is a concern to you for track days. Pad choices are nearly unlimited.

AP's calipers have been benefiting recently by lessons learned in the development of their dominant Radi-Cal racing calipers. Many of the current road car caliper designs have been reviewed and updated. Some of these changes are nearly imperceptible, but nothing has been done that didn't result in a quantifiable improvement in stiffness or strength (or both).

Chris