Brake Dust
02-27-2020, 02:42 PM
#31
Race Director
Thread Starter
Interesting. Motorcycles use stainless steel rotors and have for many years. I don’t understand why no car manufacturers (to my knowledge) use them. I’ve read that iron dissipates heat better, but if high performance bikes use them, I don’t see why they can’t be used for cars. Perhaps the reason is that they would wear out too fast. Since bikes typically don’t accumulate mileage like cars, I guess that wearing them out early wouldn’t be an issue. I don’t know...but it’s annoying that the disks on my dirt bike are always shinny when those on my cars get rusty.
02-27-2020, 03:39 PM
#32
It seems all Porsches with standard iron rotors and standard pads will dust the wheels up very badly.
A recipe that will very likely work is to first replace the stock Porsche brake pads with a ceramic-based pad. Not sure what fitment / brand options are out there for the new GT4, but there's bound to be something out there in a ceramic pad. This alone will dramatically cut down on the dust. On top of that, if you use the Armor All Outlast product, that'll help even more.
I get that some folks don't like swapping out the OEM pads, but to me, they're nothing special. I've got ceramics on my 981 and the dusting is down by an order of magnitude, no exaggeration.
If you want to track the car, you'll probably want to switch to track pads and just live with the noise and dust that come with using a proper track pad. For street, I want quiet and clean, for track, I don't care about noise and dust.
A recipe that will very likely work is to first replace the stock Porsche brake pads with a ceramic-based pad. Not sure what fitment / brand options are out there for the new GT4, but there's bound to be something out there in a ceramic pad. This alone will dramatically cut down on the dust. On top of that, if you use the Armor All Outlast product, that'll help even more.
I get that some folks don't like swapping out the OEM pads, but to me, they're nothing special. I've got ceramics on my 981 and the dusting is down by an order of magnitude, no exaggeration.
If you want to track the car, you'll probably want to switch to track pads and just live with the noise and dust that come with using a proper track pad. For street, I want quiet and clean, for track, I don't care about noise and dust.
02-27-2020, 08:21 PM
#33
Race Director
Thread Starter
03-01-2020, 03:06 PM
#35
Race Director
Thread Starter
Bummer. Looks like I’m gonna have to spring for the PCCBs. Platinum wheels help a little, but not that much. At least they didn’t on the 981 GT4.
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Hmet (03-09-2020)
03-01-2020, 04:07 PM
#36
Rennlist Member
I have two Porsche's with PCCBs (997 & 991 3RS) and two without (992 & 993). After just a month with my 992 as a daily driver, I emailed my SA and told him to change my spyder order to PCCBs. Saving the money isn't worth it to me. Dust is awful. My 992 has platinum wheels and still looks bad. Literally have to wash it twice a week if you want it to look goood. My PCCB cars get washed maybe once a month. It's not even the cost of the wash, it is the PITA to spend 30 minutes to do it.
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n4v4nod (03-01-2020)
03-02-2020, 01:28 PM
#37
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Thread Starter
I have two Porsche's with PCCBs (997 & 991 3RS) and two without (992 & 993). After just a month with my 992 as a daily driver, I emailed my SA and told him to change my spyder order to PCCBs. Saving the money isn't worth it to me. Dust is awful. My 992 has platinum wheels and still looks bad. Literally have to wash it twice a week if you want it to look goood. My PCCB cars get washed maybe once a month. It's not even the cost of the wash, it is the PITA to spend 30 minutes to do it.
My 981 Spyder had iron rotors and I used Outlast on the wheels, which helped a lot, but those are not the same brakes as the set up on the 718. I expect the standard brakes are going to dust like crazy, just like the 981 GT4, and would overpower Outlast.
03-02-2020, 02:14 PM
#38
Agreed. My 991.1 C2S had PCCBs and I OptiCoated the car. It could go sooo long between washings and still look good. And then when I did wash it, it took all of about 10 minutes.
My 981 Spyder had iron rotors and I used Outlast on the wheels, which helped a lot, but those are not the same brakes as the set up on the 718. I expect the standard brakes are going to dust like crazy, just like the 981 GT4, and would overpower Outlast.
My 981 Spyder had iron rotors and I used Outlast on the wheels, which helped a lot, but those are not the same brakes as the set up on the 718. I expect the standard brakes are going to dust like crazy, just like the 981 GT4, and would overpower Outlast.
03-02-2020, 02:33 PM
#39
Race Director
Thread Starter
Because it really doesn't do that much either. I coated the wheels on my M5 and it doesn't shed brake dust any better than Outlast.
The other thing people should consider, particularly in an open top with a race type brake set up like this, is that the particulate matter in brake dust is really, really bad for your lungs. And if you're out tearing around, every time you stop hard, your send out a plume of these particulates into the air around your car, and likely into your lungs.
The other thing people should consider, particularly in an open top with a race type brake set up like this, is that the particulate matter in brake dust is really, really bad for your lungs. And if you're out tearing around, every time you stop hard, your send out a plume of these particulates into the air around your car, and likely into your lungs.
03-02-2020, 02:36 PM
#40
03-02-2020, 02:52 PM
#41
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blackholescion (03-02-2020)
03-29-2020, 12:02 AM
#43
Rennlist Member
I didn't find the brake dust to be too bad on the Golf R. Outlast seemed to take care of it pretty well. Plus, those silver wheels actually still looked good when they started to get a very light coating of dust on them.
I was really disappointed in how poorly CQuartz shed water on the car. My OptiCoated cars just shed water right off when I blow dry them. The water droplets gripped the CQuartz car and I wound up having to towel dry the car more than I'd want to. And that car showed water spots worse than any of my Opti cars.
I was really disappointed in how poorly CQuartz shed water on the car. My OptiCoated cars just shed water right off when I blow dry them. The water droplets gripped the CQuartz car and I wound up having to towel dry the car more than I'd want to. And that car showed water spots worse than any of my Opti cars.
I track my car regularly, 5-8 times per year, in our fastest run group, and do the recovery washing myself after every event. This involves a 3 wash process each time (LOTS of rubber scars on the front and sides.) My CQuartz beads just as well in month 11 as it does after application.
05-01-2020, 04:28 PM
#44
Race Director
Thread Starter
Anyone have any comments regarding the steel brake dust on the 718, now that deliveries have started in earnest?
05-01-2020, 07:45 PM
#45
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The other thing people should consider, particularly in an open top with a race type brake set up like this, is that the particulate matter in brake dust is really, really bad for your lungs. And if you're out tearing around, every time you stop hard, your send out a plume of these particulates into the air around your car, and likely into your lungs.
PCCB gives less weight, lower rotational inertia for better acceleration, better heat dissipation, no rust, and much less brake dust which is good for keeping the car clean, and for the health of yourself and others.
Last edited by wizee; 05-01-2020 at 10:39 PM.