[MPDano]

Originally Posted by Danglerb

In what way?

Street performance will be unchanged, and even on most SoCal tracks when pushed to the limit, the differences will be limited.

Upgrading the factory Ati brakes is on my same list as buying some expensive wheels (the after I win the lotto list).

I was specific to AX and DE. In AX, theres a lot of hard (very hard) braking and then the cars just sit in a line waiting for the next 4 laps. They never have a chance to cool down like they can if your car is rolling. The Stock Steel Calipers and Small Rotors just can't disapate all that braking heat before the next run. Brakes fade when they get hot. Am I wrong on this? Going from a Single (or two) Piston to a 4 Piston Larger Caliper and Larger Rotor is huge. also, aren't the Brembo S4 and Big Red Calipers made of Alloy? Alloy vs Steel cools faster. I'm not a 928 Guru, but it sounds like it makes sense to me.

Mike, have you ridden in a car running in an Autocross. If not, you have to first hand see how hard they use their brakes. After seeing that, I know for a "fact" that my stock brakes would not be able to handle it.