a_ahmed

I will definitely need to upgrade the rears... I still have my front calipers and rotors... but as far as i know using those would make me lose the rear ebrake. I need a solution with ebrake.

The brakes are strong and yes I had ABS come on but man it's strong, I love it. In fact I wish I went with the SR21 for the front so it hits harder earlier, but I think this'll be fine, just not sure what to do for rear.

Thing is I have a 2000 C5, so from what I read that 'auto' brake balancing is only on the 2001-2004... I'm open ears...

I was thinking maybe for now for the rears to get the Powerstop 'track pads' instead of the Z26 warrior... that should increase braking in the rear but yeah... still the shoddy stock tiny C5 rotors and calipers...

PLapping12

EBC makes the stock c5 caliper pads in the SR series. That would help and you may be able to keep the stock rear brakes with it more balanced that way.

a_ahmed

but i think i would still get fade issues with the tiny dinky rear c5 rotors no?

PLapping12

You are going to build heat in those rears for sure but putting a pad in that can take it better is a good idea.

I believe @Kubs runs a WW 6 pot up front and stock rears without issue.

Kubs

I run the Aero 6 from calipers with stock rear calipers, but I use the 13" C6 Z51 rear rotors. I also run with the steering angle sensor unplugged for more rear bias. I like the bias that way but everyone might not. It would be fine with just stock rear rotors also.

a_ahmed

So now that they are broken in... lol not that they really needed a break in. They are STRONG and I am on SR11 only... it definitely has more than enough brakes... it stops fast and it does lock up and engage ABS for me so i either get more tires up front and/or stickier compound and wider tires and also need the rear upgraded to help with slowing down the car without locking up the fronts.

Crazy difference to stock with the new calipers and these pads lol... on another level.

I am running nankang cr1s, 275/35/18 front on 18x9.5 and rear is 315/30/18 on 18x11

Also now they chirp like crickets a bit when i do repetitive hard stops, im not annoyed, compared to HP+ pads I once ran on street which used to squeel loud like track pads haha

KNSBrakes

We have SR11's in stock F/R for the stock C5- the SR21's for the front are on backorder but should be coming soon.

https://knsbrakes.com/products/car/1...ace+Brake+Pads

--Aaron

a_ahmed

What are the part numbers?

So I guess I could use c6z51 rotors which are slightly larger and keep the brake which is important for me and use sr11 pads?

romandian

what year car is that?

Kubs

2003 z06

romandian

does unpluging override the electronic balancing?

a_ahmed

So mine is a 2000, not 2001+ so what can I do?

The fronts are so strong and I am not going to wider tires or stickier compound yet LOL... plan was to move the rears to the front (315/30/18) but currently the 275/35/18 Nankang CRS are not enough clearly.... i am getting a lot of ABS...

If I upgrade the rear to C6Z51 rotors and SR11 pads on the stock C5Z51 calipers, it should balance things more but how much more?

I'm still impressed, but giving feedback and trying to solve this.

romandian

#258.

Kubs

Yes. It transfers more bias to the rear

MX621

I have a set of 731 pad ( stock c5z ) sr11’s coming. Ill report how they work in a couple weeks

Aardwolf

I have not done competition on these yet but have done some street driving and the pads are fine cold. I have SR 11 on the front and blue on the back. The fronts do some squealing which might get better with more use idk. Also the torque is maybe to much for street use and panic stops. It does not take much effort to get into abs. I will see how they do sometime when it's cold like around freezing.

Aardwolf

Have anyone noticed if the SR 11 stop squealing? I'm thinking of changing them out for some street use till next track season. They are great and work cold but slow stops are pretty funny with several different screech tones.

a_ahmed

There is some but I don't care

AZSP33D

Squealing seems to be caused by the resin film transferred to the rotor resulting in a level of grip that generates a high frequency audible vibration. It takes a little bit of heavy use to build up the film, but its not easily scrubbed off by low temp low pressure use, if at all. You can mechanically remove the film with a brake rotor hone or scotchbrite, and that will reduce the squeal until you build the layer back up.

BTW Im familiar with this type of EBC sintered pad from use of motorcycle GPFAX and EPFA pads, for which I was a distributor for a while, and now have the SR21 front and SR11 rear on Wilwood forged narrow superlite (I think thats what its called) and got the same profile AP spec pads, removed about 1/4” on the mill for correct thickness.

Aardwolf

I do have a pretty good visible layer of film on the rotor. Hmm so they might be quiet with less transfer, I could try that.