11-28-2013, 04:55 PM | #1 |
Colonel
1095
Rep 2,287
Posts |
How much weight savings for CCB?
Is there a consensus for approximate weight savings there will be for CCB option? Either way, when BMW says 80kg weight savings for F8x v similarly equipped E9x, logically that would be a steel-brake equipped F8x... I would also assume the under 1500kg weight assumes CCB's...
Thoughts? |
11-29-2013, 11:16 AM | #2 |
First Lieutenant
74
Rep 348
Posts |
It will be a legit 40 pounds. This has been discussed and confirmed in another thread about the CCB technical manual.
The bigger question is, how much will the forged wheels weigh? I'm expecting around 24 pounds in 19".
__________________
WTB: 2016 M3 sedan, Black Sapphire, Extended Sakhir Lether, Ceramic Brakes, 19" black wheels, Lighting Package, HK sound, USB/Bluetooth
Sold: 2006 e90 325i 6MT, ground control coilovers, Remus exhaust |
Appreciate
0
|
11-30-2013, 01:10 AM | #4 |
Major
238
Rep 1,022
Posts |
ccb r still wayy overpriced. with right type of pads, reg steel rotors do just fine even at the track for 99.99%of us . weight wise.. maybe enough to make couple tenths?. if anything itll be a show factor for people with dollar signs..
|
Appreciate
0
|
11-30-2013, 11:15 PM | #5 |
Lieutenant General
609
Rep 10,407
Posts |
This post claims 23 kg weight savings on the F10 M5. That is 51 lb (rounding up). The brakes on the M3 will very likley be smaller (maybe smaller diameter and less thick as well) and thus less weight savings. 40 lb seems like a fairly good estimate. Keep in mind since this is spinning weight is it basically like double the amount (compared to a savings of non rotating mass). That double factor only accounts for the increased acceleration. It does not account for improved braking, nor improved handling.
__________________
E92 M3 | Space Gray on Fox Red | M-DCT | CF Roof | RAC RG63 Wheels | Brembo 380mm BBK | | Vorsteiner Ti Exhaust | Matte Black Grilles/Side Gills/Rear Emblem/Mirrors | | Alekshop Back up Camera | GP Thunders | BMW Aluminum Pedals | Elite Angels | | XPEL Full Front Wrap | Hardwired V1 | Interior Xenon Light Kit | |
Appreciate
0
|
11-30-2013, 11:52 PM | #6 |
General
21105
Rep 20,741
Posts
Drives: 2021 911 turbo
Join Date: Jan 2012
Location: Montreal
|
IMO it is difficult to get a clear answer because it is difficult to do an apples to apples comparison. The CCB rotors options are usually larger front and rear compared to their metal counterparts and so are the calipers. When 10 to 13lb per corner are quoted as savings, is it for similarly sized discs with the same calipers or is it truly comparing one option against the other?
As Swamp2 mentions, a reduction in rotating mass has even more impact. However, if some of that mass is located farther from the center of rotation, part of the benefit gets negated. I am eager to find out more on this topic for the F8X to make my decision. |
Appreciate
0
|
Post Reply |
Bookmarks |
Thread Tools | Search this Thread |
|
|