The STIs uses the same bolt holes. From what I know is you need the brembo rotors for our cars to fit.

 

I understand what you are saying, but I'm talking strictly piston sizing compared to the g35 brembos using the same rotor. Increasing your piston size using the stock master cylinder will actually decrease your braking force because the pressure applied by the system is constant. More pad surface area will offset this somewhat, and you will be at a wash with braking performance. Its why 6/8 piston calipers have tiny pistons compared to the stock brembos, becuase they are trying to keep piston surface area around the same.

 

IMHO more pistons = more forced applied the the rotor. But using the same MS = more brake pedal travel

 

If you have aftermarket 19" rims or heavy 18" rims a BBK is going to help alot. With all the extra inertia that it takes to stop that extra weight a BBK is going to do the job. You will def be able to notice the difference between the regular brakes and the BBK. People that say you wont notice a difference in stopping power are on crack. Maybe if you are comparing them to 05+ brakes you wont notice much, but for the 03-04 non brembo you will notice a huge difference between the 2.

-sean

 

You are right, I was assuming at the same pedal travel. You can achieve the same pressure with larger pistons by pushing further on the brakes. The same amount of fluid is displaced for a set amount of pedal travel, and by increasing the piston surface area while displacing the same amount of fluid, you will apply less clamping force, but if you push the pedal further, and achieve the same pressure as previously, you will get an increase in force because the piston area is larger.

 

Do it... regardless, if you have the money do it!!!! Haha.

 

Here's my input.

BBK is for aesthetics only on the street when compared to our stock setup. Our stock rotors (at least for the 05 and up) are plenty big and beefy. They're almost 13" discs. Now if you're trying to help your 100-0 braking distances then a bbk will help, but you really have no business going 100 in an area where a panic stop can occur. (not accusing u of doing 100 but just trying to make a solid case)

Bigger surface area DOES NOT equal more friction. Force of friction = Coefficient of friction * Perpendicular Force. Bigger surface area does dissapate heat better and therefore allow better fade resistance.

Larger piston does mean more force given constant system pressure. If the master cylinder delivers 1psi then a piston with a surface area of 10sq.in that is moved by the MS will deliver 10psi. Same MS but with piston with 20sq.in will deliver 20psi. This is assuming the MS can deliver a constant 1psi regardless of volume necessary.

Brake talk always have conflicting facts just because of misassumptions and incorrect terminology.

 

hey man, if you got the money then hell go for them, they look great, and arguably are better than our oem brakes

 

The feel is different when using opposing multiple pistons in calipers like the Brembo's rather than one piston on one side that slides the entire assembly over to accomplish the task... Multiple opposing piston braking systems are much better in every way, not just the performance, but the feel also.

 

Why do you think all the high end performance cars use multiple opposing piston calipers... It's the way it's done, not the force... Your fighting a battle that was lost in the 60's, give it up...
There is no way you can argue that single piston calipers are even close to being as good as opposing multi piston calipers!

 

tHANK YOU ALL FOR THOSE INFORMATION !!! U GUYS are the best !! so say if i decide to go with Brembo, which Brembo should i get ? like those ppl says the STI ones? does the brembo caliper color matters?? like those gold or red ones??? sorry, i m a newbie...

 

define not even close? 05-06 single piston floating calipers have very similar panic stop braking distance numbers to the brembos. Face it, the cars are limited by TIRES, not brakes. We aren't talking high end cars, of course the brembos are better, but on the street, hardly. Both setups can easily lock up the wheels where abs kicks in so stopping becomes almost solely dependant on tire compound and weight distribution

 

The reason why higher end car use multi-piston calipers are:

1) Much improved brake feel.
2) More braking force potential
3) Using a single piston large enough to achieve the braking for needed would result in a huge caliper that would compromise feel and limit rotor sizing.

Also the 05+ non-AWD sedans/coupes us the larger rotor and dual piston calipers.

 

ahhh...just do it if you got the dough...I remain that the used STI ones are cheaper than used G35 ones with bigger pistons...and they look cool!

 

good call, they are dual piston, but still floating like the guy was talking about