carbon brakes make a difference also, the ZR-1 has the same (exact) brakes as a Ferrari Enzo, they are awesome.

But, how much does it cost for a brake job????

Answer:

The brakes for the Ferrari Enzo were developed by Brembo and are made of carbo-ceramic material (CCM). Ferrari has been using brakes made of similar materials in their Formula One efforts but this is the first time it has seen service in a road car. The advantage behind the exotic materials is weight reduction; unsprung weight was reduced by a whopping 12.5 kg. (27.5 lbs.). There is a price for the advantages however. A set of brake pads is said to cost $6,000 and for the rotors the bill is $24,000. Ferrari does claim better reliability with the design. ABS, missing on the F50, is part of the Ferrari Enzo.