bbgun

I am looking at switching out my CCB to girodisc basically because of noise. I know the CCB perform great but I have had it with the noise. Can anyone that has made the switch comment on how the Girodisc iron rotors perform compared to the CCB? I was thinking of keeping the CCB in case i ever sell the car.

Is there a better/different option I should consider?

Thank you,

Bill Dearborn

I replaced my Ceramic Brakes with AP Racing brakes due to replacement cost issues. I never heard any noise from the ceramic brakes for the 10 months I drove with them on the car. Brake noise can be reduced by applying the brakes harder, light pressure on the brakes lets them vibrate more. Have you performed the burnishing described in the OM. Oh, by the way you will still get noise from iron rotors. The rotors aren't the cause of the noise.

Bill

bbgun

Thank you Bill, I purchased the car with 11k miles and assumed the brake burnishing was completed. I have read it and will do it myself and report back. Thank you again for your suggestion.

Viking0728

How do the AP racing brakes compare to the Girodisc replacement for the Z07? There is a pretty significant price difference and the brake calipers for the Z07 should be decent right?

Thanks

BrunoTheMellow

2-3x the initial cost for no gain performance but you can run 1" pads I believe.

madrob2020

Don't have CCBs but have always wondered why, especially street drivers, would pay that HUGE cost for the rotors which can get easily damaged especially by DIYs. Hell, the Z already stops in 128' from 70 mph (according to C/D tests) even slightly bettering the '19 ZR1s. You really going to notice a couple of ft. difference ON THE STREET. I get why they MIGHT be better on track-but? JMHO so please don't flame me!

fleming23

That is a pretty inaccurate comment. The performance gain is measurable and significant, from pad selection, to pad life as you mentioned, to braking harder, deeper and more consistently, not to mention a properly vented rotor that required little to no ducting to work properly.

For the OPs situation, overkill, but to say no performance gain is simply false.

BrunoTheMellow

Please show me proof of that. Seriously. Other than the thicker pads. How does a an ap racing kit brake harder and deeper than a z07 setup with iron rotors which have bigger discs?

The only other gain is less rotational mass due to smaller discs.

Pad selection, bs. The z07 iron pads are the same as the z06 iron pads. Available in every brand virtually.

Properly vented rotor? Have you seen the girodisc rotor?

I get it, you spent a lot of money on it and even had issues with braking after install. I like data. Show me PDR data before and after of you decreasing speed faster.

edster75

The AP brakes are available in z06 and z07 sizes.

The AP kit is lighter but that's because the calipers are lighter. The rotors are actually heavier, and rotational weight goes up.

I plan to eventually upgrade to the AP kit front and rear. Even though the bang for the buck is in the front kit. The rear kit saves a bunch of weight.

Right now I have the dba rotors that use the OEM hats. They are very reasonably priced. Slightly heavier than stock, and have curved vanes instead of pillars for improved cooling. I cracked my stockers on my z06 and figured I'd give them a shot.

X25

I've switched to OEM Z06 brakes from Z07/CCB brakes, and have been pretty happy with their performance at the track, when combined with Girodisc rotors and a good set of pads, as well as OEM brake cooling ducting that comes with 2017+ Z51/Z06/GS. I did not use the Girodisc rotors for CCB calipers, since they add unnecessary weight (28 lbs vs. 23 lbs rotors); iron rotors don't have to be as large as their CCB counterparts for the same job. The total system weight did not increase much, since OEM non-CCB Z06 calipers are a few lbs lighter, and rear OEM CCB rotors are pretty heavy due to their iron hub GM designed to keep the hand brake drift-master-ready. Aftermarket kits come with aluminum hubs.

One issue I've had after the switch was soft initial bite, which turned out to be CCB equipped cars coming with a different brake booster from factory (presumably less boost to make CCBs more user friendly). Once I switched to the regular OEM booster (that comes with all C7s except CCB-equipped cars), I regained the nice/stronger initial bite, too. Note, this would be the case for any brake kit used on originally-CCB-equipped cars.

25mm pads on some of those aftermarket calipers are great, but keep in mind, the Z06 pad is huge in surface area. It is the volume that counts after all for wear, and it's not too far behind. Combined with better lasting ST43s (as opposed to Ferodo most use with AP), you can get similar life.

As already pointed out, the real advantage of AP over the OEM is the caliper weight. We should note, though, even though the caliper weight is unsprung weight, it is not rotational mass, which is far more important to reduce. As such, even though top end BBKs (LG's kit and AP's 370mm kit) comes close to same weight as OEM CCBs, if not less at times, CCBs will always be far better in terms of rotational mass.

X25

Actually, I can list the weights from my build thread (weight pics in the thread):
Z07/CCB

• Calipers: Front 14.6 (?) each, Rear 10.4 lbs - 50 lbs total.
• Rotors: Front 13.4 lbs, Rear 17.9 lbs - 62.6 lbs total.
• TOTAL: 112.6 lbs (of which, 62.6 lbs rotating).

OEM NON-CCB with Girodisc

• Calipers: Front 13.5 lbs each, Rear 6.7 lbs - 40.4 lbs total
• Rotors: Front 22.9 lbs each, Rear 17.5 lbs. - 80.8 lbs total
• TOTAL: 121.2 lbs (of which, 80.8 lbs rotating).

I would expect rotating mass of any decent BBK to be similar to above at 370mm front, and even more with 390mm front rotors.

BrunoTheMellow

The girodisc z07 rotors weight 22-23 lbs each.

X25

My fronts weigh 23 lbs (Z06 Girodisc). As far as I know, the much larger annulus and bigger diameter Z07 rotors are 28 lbs.

BrunoTheMellow

The z07 girodisc rotors has virtually the same annulus as the Z06. The pad size is shared. Im sure they are a couple lbs heavier for the extra 1" extra avg diameter. If you imagine a 2" thick annulus the Z06 avg rotor diameter is 13.5 (from 12.5 to 14.5) while the z07 is 14.5. if you extrapolate it, it turns out to be about 26.5 lbs so yeah that 23 lb figure I found must be wrong unless they are thinner rotors.

X25

They are indicated at 28 lbs per Girodisc. So you'll have 5 lbs rotating weight penalty per side; a weight that you likely don't need. At the same time, it's higher capacity than systems most people use, and they should outlast anyone else's brakes (rotors); your call : )

RegnaR

Because you can get a better deal on an optioned out car. Got 20% off sticker on my car so I really did not pay for the CCBs but I wanted a car with them when I was looking. less rotating weight will last a long time on the street, no brake dust.

I have no noise coming from my CCBs

Viking0728

So what is the most "bang for the buck" when replacing CCBs?

BrunoTheMellow

Find some take off Z06 brakes, or girodisc z07 iron rotors.

madrob2020

Sounds alot like when wives say "the store was having a 20% off sale, so instead of only buying 1 dress I bought 5 so I could save more". Sorry, couldn't resist.

X25

The prices have moved up a bit since then, but the idea is the same:
"C7 Z06 front brakes for $1150 + pads!: link."

I did the same on my '19 Z06 Z07, too:
https://www.corvetteforum.com/forums...post1598485699

Just keep in mind, looks like CCB equipped cars come with a different brake booster. For using anything besides CCBs, I'd recommend replacing it, too:
Cars with Z07 / CCB brakes; lower brake boost issue