chance6

I’m also going to say that I’ve driven plenty of Porsches and I always did like the feel of the steel brakes...certainly no complaints...but the PCCB knocked my socks off.

But with that both brake sets are excellent.

There’s plenty of RL geniuses out there that want to be proven right and that’s fine!! Doesn’t really matter to me. I always appreciate the vast knowledge base I can acquire with a trip to your fantastic forum.

orthojoe

Where did that come from?

I actually do. I've got a NB spec Miata and ND street car. Love them both and have just as much fun on track and on the street with them as I do my RS, but that is certainly subjective.

Psup4s

This has been explained to death here and a simple search will corroborate all points.

this is turning into another “value” thread focused on pccbs Lmao.....yellow calipers will NOT make your car worth more than iron brakes and NO it will not stop you better than iron brakes.

TRAKCAR

But there is a middle of the road option #3.

#1 For me PCCB is not an option, it’s too expensive for me.
#2 Steel is fine, except in extreme situations and if you want clean wheels.
#3 All the benefits of PCCB for a fraction of the cost but still a bit more expensive then steel, but for this hobby it becomes a rounding error, so why not?

robmypro

If PCCBs were the same cost as iron brakes (no cost option, same cost to replace) I am guessing well over 90% of buyers would check the PCCB option when ordering. The weight savings and lack of brake dust alone would be enough for most, but when you add no brake fade lap after lap on track, I think going PCCBs would be a super easy choice.

It is all about cost, and whether the cost difference is justified relative to the improvements received. And I can 100% see why many go iron, especially if they are tracking a lot. But if you take cost out of the equation most would order PCCBs. They are just better.

Psup4s

I think at this level it is silly to think any GT3 and more so any GT3 RS owner can not afford a $10k option specially for those who paid
more $$$ on ADM. It is simply a matter of choice based on the fact that these cars are better off specd with less options and not bloated.
I dont mind cleaning my wheels and one can still have aftermarket ceramics that will perform better than pccb.

TRAKCAR

^^ It’s not the $10K cost to buy, it’s the $25K replacement cost.

Psup4s

^^^ yes I was also making a reference at the comment about price being same for both iron and pccb. The cost of replacement wold not be an issue for those who attend cars and coffee more often than their local track as their pccbs will last much longer and will be cheaper in the pong run.

TRAKCAR

^^ Agreed for no track use at all.
But even some track use, if honestly disclosed can devalue the PCCB car.

Psup4s

Agree 100% in which case yellow may be a deterrent for second market buyers even if track miles not disclosed.

ToasterThief

Right in this thread: post 31.

ipse dixit

Stopping distance: Draw (assuming ceteris paribus)
Brake fade: Advantage PCCBs
Unsprung weight: Advantage PCCBs
Cost: Advantage Irons
Cars & Coffee Mojo: Advantage PCCBs

Winner: PCCBs, especially if you drink lots of coffee.

chance6

Interesting - this is someone that "gets it". I understand the steel angle, it's a cost consideration, Porsches are expensive enough- except for those RL geniuses with unlimited funds.

If you don't think PCCBs stop you better and more consistently, with less unsprung mass, i.e. WEIGHT and larger diameter rotors and contact areas, especially when heat is considered, then you are high on crack.

hellboy_mcqueen

Braking distance is defined by the tyre grip and the road surface. PCCBs are definitely light, hence reducing the unsprung weight, hence very favorable; but they are also brittle. If you end up on the gravel, most probably you would chip them. Even Porsche has a special tool used while taking the wheels out. If they are brittle then the cost of replacement comes to the play and it is a lot more than the iron alternative.

What has not yet been also discussed is the reduction in the downforce for the front axle. PCCBs reduce the front axle downforce as they are bigger in diameter, which reduces the airflow exit from the wheels. Sport Auto was testing GT4 back in 2015 and I have read that the PCCBs were reducing the downforce around 10kgs around 200km/h. Real numbers might differ as I haven’t found the hardcopy at home yet. The reason why they are bigger is to produce enough friction as Joe said.

Race brakes are generally CCM - carbon and carbon which requires crazy temperatures. There is a reason why Porsche and Brembo developed carbon ceramic brakes and they are not supposed to be race brakes..

So nothing comes for free.

docjohnM

Ironically, the 570S has corvette brakes! Really used to **** off the Mclaren folks to find that out. They are a direct swap apparently. Plus, you save about $10K over what Mclaren charges for new sets.

I'm actually going to add the ST carbon conversion to my GT3....But for the pussiest of reasons.....I am sick of brake dust! LOL!