year ago - new master cylinder
2 months ago - new pads
2 months ago - new front caliper (sticking)

brakes still dont feel 'confident' in stopping me like i want?

should I upgrade to SS brake lines?

also...........................................

Is it necessary to swap over the TII brake master cylinder if you put in 4 pot calipers in the front and stock in the rear, or should i upgrade the master cylinder and do all four brakes?

Does the bore + stroke of the piston in the cylinder really make a significant difference?

 

I assume you've bled all 4 brake lines, and flushed the fluid.. If not, that's your #1 priority.

SS lines are fine if you want to do them, but not required. However, with the age of your current lines, replacement may be a good idea no matter which route you choose.

No, it's not necessary, the NA MC uses the same bore, 4 piston or not. The T2 MC is slightly larger bore, but in my experience, not required (I'm using the NA MC, and I have 0 problems with the brakes)

PaulC

 

nevermind, 2 posts going on, dont wanna hve to have anyone repeat themselves. S5

 

S4 or S5?

 

This thread is a little old, but I had the same question. I did just bleed/replace my fluid and put in SS lines, but the pedal feel is still pretty stop and there's a good bit of travel. Is this because there is no brake booster on the S4 TII? I'd like to shorten the pedal movement if possible.

 

I had to bleed my brakes like 6 times to get all the air out... if you did a line change, the best thin i can tell you is that you have to run a LOT of fluid through, especially because of the ABS system to get ALL the air out, my pedal feels good now, BUT, it still doesn't feel as good as my S5 GTU did....

 

i've got an s5 n/a with 4 pot brakes up front (from a t2 i think..originally had single piston) and the original master cylinder. feels firm as always.

if your brakes are mushy it's either air or a failing master cylinder.

john

 

I though the master cylindewr might be going as well, but RP performance looked at it and said all was good. The front brakes are 4 pot up front. But the S5 N/As come with a brake booste if I remember correctly.
I should probably check my master cylinder myself.
selanne8-> what do you think of the ebc pads?