05-02-2023, 06:16 AM | #24 | |
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Here's what my rotors look like, you can see a bit of brake dust in the holes. Obviously, I will have them clean it but it's not dramatic. I am guessing you had more, since you said your whole pad was basically gone? |
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05-02-2023, 06:28 AM | #25 | |
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05-02-2023, 06:33 AM | #26 | |
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05-02-2023, 02:09 PM | #27 |
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Email from Girodisc below. These are great rotors for those who aren't familiar. I use them on my F80 and this would be a day 1 mod when the time comes for me to join you G8x guys.
We are currently in the prototype phase for our G8X rotors – both for iron direct replacement, and for converting carbon ceramics to iron. If you’re interested, I can add you to my list of people we will be reaching out to when they’re ready. Let me know, thanks! |
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05-03-2023, 03:23 AM | #28 | |
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We were pushing the car to the limit on a short circuit. A few laps were driven by a pro racer that got really close (within 1s) to a time that is driven by good 991 GT3 drivers. I am not sure that would be possible without CCBs. But pads took the beating. Here you can see the old pads, and new endless. |
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05-03-2023, 04:22 AM | #29 | |
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I am really looking forward to the Endless pads, just got another confirmation should be delivered next week. Do they fit the stock pad wear sensor btw? Also, did you have squeaking (past bedding in) on them? For now I went with front pads only. Last edited by beamlord; 05-03-2023 at 01:53 PM.. |
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05-03-2023, 04:52 AM | #30 |
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Those are only fronts. I also ordered fronts only. No/minimal sqeaking, pad sensors shouldn't be an issue.
Rears do not work that hard on this car. It is a shame to have such caliper on the rear isn't it? Those 4piston rear calipers on F8x looked much better.. |
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05-03-2023, 06:44 AM | #31 | |
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Thanks for all the info man, you really helped me quickly identify the right pads and order them all within a few days. The dealer said they will include the bedding-in procedure. I assume you did it, before going on track? |
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05-03-2023, 07:42 AM | #32 |
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I bet in a few weeks/months this thread will be full of posts about having to replace CCB discs/rotors 😅
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05-03-2023, 08:31 AM | #33 |
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05-03-2023, 09:13 AM | #34 |
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The reason for that is probably the numerous examples of people using this type of CCBs on track and destroying the rotors.
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05-03-2023, 09:27 AM | #35 |
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05-03-2023, 09:42 AM | #36 |
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05-03-2023, 10:01 AM | #37 |
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There's this post from Jeff Bezos earlier in the thread - https://g80.bimmerpost.com/forums/sh...72&postcount=7
But the reason you don't hear more about it is because most people who have CCBs don't track their cars. There are some CCB options from Brembo meant for racing but those are in the 15-20k price range for earlier generation M cars and I can't even find them any more. Seems most people understand that CCBs are for low dust and street longevity while standard rotors are the better option financially for the track.
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05-03-2023, 10:09 AM | #38 | |
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05-03-2023, 10:18 AM | #39 |
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Additional reading:
https://www.bimmerworld.com/About-Us...ke-Conversion/ https://www.essexparts.com/news-blog...tter-than-iron https://www.rebrake.de/en/refurbishm...c-brake-discs/ https://www.carscoops.com/2019/03/wa...for-track-use/
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05-03-2023, 10:30 AM | #40 | |
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They are great for several reasons, especially on track. The one main factor is, they are more expensive on running costs in the LONG run. Obviously, they are also more of a headache than steel brakes so yes, for hardcore track use, anyone sane enough would take/swap for iron brakes. For my particular purposes, i.e. occasional tourist drives on NS ceramic brakes have far more advantages. I get best of both worlds, clean wheels, excellent performance (and gorgeous looks). In both cases, neither steel nor CCBs run well on stock pads and we all have to replace them, so that is a weird argument to make. Last edited by beamlord; 05-03-2023 at 01:54 PM.. |
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05-03-2023, 10:31 AM | #41 | |
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05-03-2023, 10:46 AM | #42 |
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I have seen many Porsche running CCBs on track. I ran my F82 M4 with CCBs for two years on track, never changed rotors and wear was absolutely minimal. During the same time, I changed four front pads and two rears.
Replacement costs are high, without a doubt, but replacing them with iron rotors is a great option. So the word "destroying" rotors on track is a gross exaggeration IMO. |
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05-03-2023, 11:19 AM | #43 | |
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See, that's the kind of experiential info and facts I appreciate. Much better than (usually, those who never had CCBs) screaming about hypothetically destroyed rotors. Coincidentally, never heard around NS (the most visited track in the world) about a rotor destroyed on track. |
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05-10-2023, 04:55 PM | #44 | |
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I did a half-assed bedding in initially, which was just 10-15 stops from 60ish to 20ish, couldn't do more at that moment. After that I had a long trip on autobahn so not much braking. That being said, they started to squeak lightly at lower speed braking, but otherwise perform fine so far. Looking at the rotors though, I don't see good brake pad transfer, rather a few quite sharp concentric lines which is definitely not right. I hope some harder bedding in will settle this? |
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