10-06-2020, 01:42 PM | #89 |
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Think it partly depends on the driver, but 6k miles would be enough to wreck a set of CCBs, given the broad estimates of ~20 +-10 lapping day(presumable ~3 hour days) lifetimes for CCBs. IMO regardless of CCB condition, chuck them and go to some good old fashioned iron, and try to negotiate down the price based on that assumption.
No dealership is going to pull the rotors off to weigh them for you. Like FormulaMMM said, they'll just wait until someone comes around that doesn't question it. |
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10-06-2020, 01:59 PM | #90 | |
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Here's info on the upper carbon splitter crack. (hopefully attached) |
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10-06-2020, 02:01 PM | #91 | ||
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You need the official Carboteq tool to truly know, but it's preposterously expensive. The cheapest I've seen is $7.1k Quote:
RW makes an exact replica for $799 (was previously on sale at $736): https://www.rw carbon.com/bmw-f80-m3...fiber-lip.html Last edited by 4play; 10-06-2020 at 02:07 PM.. |
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10-06-2020, 02:16 PM | #92 | |
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A previous post mentioned that the car had a track-off, I believe. My replacement part prices were online quotes for OEM pieces. Both numbers you quote are aftermarket re-pops, I think. I would likely want a new OEM carbon upper splitter and a repop lower splitter. I drive around in a Lotus Exige in LA, so I relate to the low clearance issue (and the stiff ride). If I manage to get my hands on a GTS, it will be used on track like all my cars. I don't have much of a practical need for a car so I buy them for the fun factor. |
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10-06-2020, 02:36 PM | #93 | |
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The CCBs are not in good condition. I was going to buy this car in Q1 2022 but the owner listed it too early. I can't have the CS, the GTS, the E90 stroker and the E92... and then 2 street cars. |
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10-06-2020, 02:41 PM | #94 | |
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I might take a ride up the coast this weekend to take a closer look. This one might be up my alley. |
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10-06-2020, 02:42 PM | #95 | |
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10-06-2020, 03:15 PM | #96 | |
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If you're going to track a lot, I probably would not worry about going OEM for either of those pieces, as they will get chewed up by debris during track use. The one plus of having the expensive M4 everyone copies is that exact replica GTS parts are available and are "cheap"! I have a replica upper splitter from RW on order - once it arrives, I'll take some photos comparing it to my new OEM one sitting in the basement. Allegedly, you cannot tell the difference, but we'll see. |
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10-06-2020, 03:20 PM | #97 | |
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10-06-2020, 04:23 PM | #98 | ||
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Unless I'm missing something, can't really know ccb status based upon that report. Pictures of the wear indicators at all 4 corners would be helpful. They should be able to manage. Here's what you're looking for. Quote:
What?? are you some sort of ascetic?
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10-06-2020, 06:57 PM | #99 | |||
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I'm attaching pictures of my two front rotors, I think this means the where indicators are good? Also I know it's not the same as weighing the disks, but when I run my finger along the swept area versus the pristine surface next to the hub mount, there is absolutely no step off, I can't even tell I'm moving my finger from one part of the dish to the other except it's slightly less smooth. I picked this car up about three weeks ago for 78k with 5200 miles. I don't think it's ever been to the track judging from the condition of the original tires which were swapped out for super sport by the owner after he picked up a nail. Water injection was nonfunctional the car is still under factory warranty so I had the diagnostic and replaced the valve block with the updated part at Cetera. Made me nervous so I managed to get the factory warranty extended another three years through BMW. |
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10-06-2020, 07:15 PM | #100 | |
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... they look all good. Have a look at the pads as well. Should be little to no wear. And if they're tracked with enthusiasm, can also tell you the black paint on the pad backing plate (opposite the pad) flakes and chips off. Another telltale sign of track activity - muffler and tips. Are they discolored by heat? If not, no track, or tracked by a wimp so no worries. Hope you get the water sorted!
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10-06-2020, 07:18 PM | #101 | ||
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10-06-2020, 08:43 PM | #102 | |
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10-06-2020, 09:05 PM | #103 | |
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10-06-2020, 09:30 PM | #104 | |
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10-06-2020, 11:42 PM | #105 | ||
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Will find out for sure soon. Quote:
The F82 GTS TIS specifically notes around 200g can be lost: https://www.newtis.info/tisv2/a/en/f...rakes/JJXY9MyS "Depending on the driving profile, the brake disc loses up to approximately 200 g of its mass as a result of temperature and oxygen influences, mainly around the support. This material-specific loss of mass must be determined by weighing each individual, cleaned brake discs. The permissible minimum weight has been permanently indicated on the brake disc chamber." For reference, I have a set of 4 brand new CCB rotors, and the front rotors weigh 199g and 204g more than their respective "Min Weight" numbers stamped on the disc hat. The front rotors on my car are relatively new and are 193g and 197g above minimum. Last edited by 4play; 10-07-2020 at 12:03 AM.. |
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10-07-2020, 07:00 AM | #106 | |
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10-07-2020, 08:32 AM | #107 | |
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GTS is a confusing blend of legit, durable performance components intended for hard use and others that can't hang. If buying for track purposes, do think well-modified and used versions with maintenance history make a lot of sense. Can see how certain mods (brakes, plates) become expectations in the used market over time, along the lines of 997 GT3 aftermarket upgrades that are the norm. The one at Toy Barn dropped to 78.7.
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10-07-2020, 11:42 AM | #108 | ||||
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10-07-2020, 02:14 PM | #109 | |||||
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10-08-2020, 01:26 PM | #110 |
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What he said buy the damn thing
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