Quote:
Originally Posted by addy27
Its good to know but not sure what the benefit is since you can always easily upgrade to 550i/650i/750i front brakes or even 760i front brakes. The calipers and brake pads for the 760i are the same outer diameter as e60 m5 but has more surface area and a much bigger pad.
With the e60 brake calipers, I'd want to understand if any other module needs to be upgrades like the brake pump.
Have you tried putting the e60 rotor on it? That might be the only reason to attempt this conversion as the e60 m5/m6 rotors are cross drilled and two piece.
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The 550I/650I/750I/ all use a single piston caliper.
The 760li is a nice option, but good luck finding the even being remotely cheap. The e60 m5 calipers can be had for roughly $250
Their is no need to upgrade the brake pump, Many people install f10 m5 calipers(which are 6 pistons) without any known issues.
The e60 m5 rotors do not work at all due to the offset of the center hub to the rotor is much different.
This is a great upgrade, More even pressure against the rotor could provide more contact area for the pads, meaning more braking force.
E60 M5 calipers use a dual Piston Caliper. Each piston is 42mm(84MM combined)
the Alpina is still a single piston 60mm piston. So the piston size alone is about 40% bigger.