[positiveions]

Originally Posted by Radiation Joe

This is why. (linky)

And this helps, too. (another linky)

I agree with u Radiation JOE. I had my E36 M3, supercharged, with all the MODs you can think, and people with B4 S4s couldn't outbreak my butt, and try to take me on the corners. ANd to think of it, I had Brembo slotted, not crossed cheesy drilled, rotors with some PAGID pads.
ANyone is thinking about upgrading to a four pistons, think again. All you need is some good ATE SUPER BLUE brake fluid, stainless steel lines, PAGID pads, and BREMBO Slotted. Cost: around 300 to 400 dollars vs. $3000.