If a stock car can stop from say 60-0 (i think) in 125 feet with 11" 2-pistons, in general, how much would 13" 4-piston brembos improve the stopping capability?

 

by a mile. h:

 

depends on your tires as well
and rotors
and pads

so many variables h:

 

The big difference with big brakes is fade resistance and pedal feel rather than stopping distances. Stopping distances are more a function of tire traction and (if equipped) ABS effectiveness.

 

u stop so fast u go back in time.. h:
who's that girl in ur avatar?? h:

 

Useless if you're not tracking the car.

 

I just want to reduce brake fade on the track. After half a dozen laps of hard driving through 2.2 km circuit I can feel the fade on the stock brakes. Friend's SiR's brakes were smoking too. Stock pads are gone in 25-30 laps. Of course i'm just an amateur dude...did you upgrade your pads first?

Yvonne.

 

your gf?h:

 

First thing I'd do is upgrade your pads and fluid, then either resurface or replace the rotors. See how much of an improvement that gets ya, then worry about big brakes.

And if that turns out to be not enough, take a good look at Stoptech. They make awesome brake kits and are more affordable than Brembo.

 

My brakes are all stock