I've said this before many times.
Big brake kits - bigger rotors, 4 pot / multi piston callipers do NOT improve stopping distances. The standard brakes on a modern car such as a 147 /156 or 159/brera are perfectly capable of locking the wheels.
The only real benefit the big brake kits offer is increased thermal capacity and perhaps, in this instance, a small improvement in stopping distances from silly speeds (120mph+) as a consequence.
If you anyone feels that their brakes are inadequate, I would suggest that there is an issue with your brakes - brake fluid, flexi hoses, calliper condition etc all contribute to a lack of braking performance.
Before this review, I spent over 10,000 KMs with the car after the BBK upgrade to make sure it is not any sort of placebo effect. Like I have stated on previous replies, down hill runs and high speed (180KM/h ~ 200KM/h) expressway cruise are kind of my things. Allow me to share my experience in more details.
P/S: I am from Malaysia and hence my scenarios could be very different than yours.
High speed expressway
We do have speed cameras or patrol police cars (Evo X) on expressway. However, we may get a speeding ticket but we don't enforce traffic violation point systems yet. We have trucks and motorcycles sharing the same expressway, things can get messy sometimes. From my experience, after the BBK upgrade, I could slow down my car from 180KM/h down to 90KM/h in much shorter distance should the truck/motorcycle decided to change lane (overtaking or just sleepy).
The 2.2 JTS does not do well up hill on my heavy 159. We have many speed bumps down hill. Guess you could imagine the amount of abuse we put on the brakes. Before the BBK upgrade, my brakes will just fade away after a single run. My BBK holds up multiple runs without issue now.
Attached google map of the down hill route.
YES! Should have gone to race track instead of pulling those stupid stunts on public roads. I know it, but it is just too much fun.
I agreed that it might be a very expensive way of doing. But I want to make sure the car can stop as and when I needed it to.
Cheers and comments are always welcome.