Quote:
Originally Posted by _des_
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.
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Unfortunately another example of a failed education system
Two 42mm pistons have a combined surface area of 2771 square mm.
A single 60mm piston has a surface area of 2827 square mm.
They're essentially the same.