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      05-25-2018, 01:20 PM   #45
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Quote:
Originally Posted by lemetier View Post
You have it backwards. M4 GTS is the odd duck which has MCCB standard but does NOT use a different servo (876 instead of 999).

Long story short, M2 uses the same servo as all the other 4pot front/2 pot rear Iron M Compound/M Sport/M Performance brake systems avail for 1er, 2er, 3er,
and 4er.

I'm not sure how this wasn't clear:






Model Type Variants?

F80/F80N - M3 Sedan/M3 Sedan LCI
F80N - M3CS Sedan LCI
F82/F82N - M4 Coupe/M4 Coupe LCI
F82N - M4CS Coupe LCI
F82 - M4 GTS Coupe
F82N - M4 GTS Coupe LCI DTM Champions Edition
F82N - M4 GT4 Coupe LCI
F83/F83N - M4 Convertible/M4 Convertible LCI
OKAY, Now I understand where you are coming from.

I wasn't thinking about any of the other models in terms of Motorsport edition since most people on this forum would not own those.
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      05-27-2018, 06:09 PM   #46
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This is awesome that BMW offers this now. Especially pleased with the light gray calipers. Will look awesome with MG and black wheels. Only I'll paint the 'M' black. Now I'm not upset about passing on CCBs. I can do a retrofit with the gray calipers.
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      06-23-2018, 04:02 AM   #47
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Really hope this comes out as a retrofit for the f80! I'm all over this!!
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      06-23-2018, 08:20 AM   #48
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So whoís going to be first to do this retrofit?

The F8x platform comes with decent looking caliper front and rear albeit theyíre a tad small based on appearance. Itís just the blue color doesnít look appealing. Plus for those that track their cars, it turns green anyways so I wonder why they decided on blue and not red/yellow/grey like other OEM Brembos on other performance cars.
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      06-23-2018, 10:47 PM   #49
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Quote:
Originally Posted by espressoo View Post
So whoís going to be first to do this retrofit?

The F8x platform comes with decent looking caliper front and rear albeit theyíre a tad small based on appearance. Itís just the blue color doesnít look appealing. Plus for those that track their cars, it turns green anyways so I wonder why they decided on blue and not red/yellow/grey like other OEM Brembos on other performance cars.
Depending on price Im doing it since as you stated, the stock calipers are too small and the blue color is atrocious on my BSM/SO F80
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      06-28-2018, 06:48 PM   #50
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Quote:
Originally Posted by Dave 90TT View Post
Let's be honest here...for those of us who actually track our Ms, is there a need for upgraded brakes, other than pads and fluid?

I mean, seriously, Itrack my M, on r-comp tires, and with a tune for more HP, and have never had any brake fade. I get the improved looks of a bigger piston, but can't see the performance need for upgraded brakes.
Never had any brake fade? The f80 brakes are good, but will 100% fade....
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      06-28-2018, 08:42 PM   #51
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Quote:
Originally Posted by Donger Kim View Post
Never had any brake fade? The f80 brakes are good, but will 100% fade....
That has not been my experience. I have track pads I use for the track, and Castrol SRF fluid. Stock calipers. New Stoptech Aerohat rotors up front (same size as stock, replaced due to damaging the rotors by running pads completely out, totally my fault).

No fade at the track, and this includes tracks with long front straights (Miller in Utah, Pueblo Motorsports park) as well as shorter, tighter courses (La Junta, PPIR). The long courses included full on braking from ~160 mph down to about 60 mph going into turn 1.

Edit: PFC-08 front and back for track brakes
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      06-28-2018, 10:21 PM   #52
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Quote:
Originally Posted by Donger Kim View Post
Never had any brake fade? The f80 brakes are good, but will 100% fade....
I use Pagid RS29 on an otherwise completely stock brake system. I do 16 to 20 track days per season and I have run track that can be pretty hard on brakes. I never had brake fade issues with my M4.
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      07-01-2018, 02:21 PM   #53
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Quote:
Originally Posted by ckortane View Post
Wil the MY19 F82 M4 have the M2 competition brakes available as an option to order from the factory, or more than likely just a retrofit kit like the CCBs?
No. Order and price guides are out and not standard or option for M4
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      07-02-2018, 09:30 AM   #54
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I just did pads on my '15 CCB car also as a preventative measure to minimize wear on the rotors.

I see you mention that you're still in warranty/maintenance - were your CCB pads covered by that? Mine were not. My mileage is about half of yours but track days about the same. I noticed after 5 days my pads still looked new. Then after a 2 day weekend the fronts looked like they lost half of their thickness - did the swap asap after that weekend.

My tech agreed after getting the pads off of the car - said rears were in good shape still but fronts were at or a little less than 50% left.

Had alignment done also, car now feels so much better. Alignment was definitely off, particularly rear toe (Thanks kerbing!).

If the kit is determined to be PnP, I'll pick up the steel rotors sometime before next year events start up and put my 24k mile CCB rotors in boxes for the future...

Quote:
Originally Posted by ckortane View Post
Wil the MY19 F82 M4 have the M2 competition brakes available as an option to order from the factory, or more than likely just a retrofit kit like the CCBs?

Currently have 15 f82 with CCBs and need to replace pads as they are at 50% wear. Rotors were just weighed and have 190grams (front) and 40g (rear) - so based on weight seem almost new. I've put on 40k miles and 8x track days but mostly in C group (just moved up to B).

Debating on what to do with '15 - keep and look at doing the m2 competition brake swap so I can go to track without worry of CCBs quickly going - or sell and look for a my18/19. Would be sweet if my19 offered the m2 comp brakes. Regardless going with std brakes and racing pads a better option for 2-4 HPDE weekends a year.

Still have 4mos left of original warranty/maint.

Hard to give up tz blue m4 for one of the base colors
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      07-03-2018, 07:24 PM   #55
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Quote:
Originally Posted by ckortane View Post
Right
I'm debating on whether I sell the car and move into a 18/19 or perhaps look at extending the warranty. Or just go no warranty, replace the pads and then look at the m2 comp brake kit retrofit for before track season starts.

I was pretty disappointed to have to "retire" early at my last event due to concern about pads/rotors.

Again hearing from bmw service who weighed the rotors they still have 190grams and 40 grams available in weight - which is about the same number when new. So it's a bit confusing getting different info from different sources. My instructor was saying that the rotors are on the way to being replaced. But the weigh says the that they have tons of life left.

Learning that the 19s won't offer individual colors until 1/19 (SOP) makes me think better to just hold onto my car. Wish it had zcp (it's a 15) but has all sorts of other goodies including 666wheels / m perf exhaust / cf parts.

I got a quote from usaa for 4yr/up to 100k miles, - $8500!!! Can't get a dealer to respond and provide the options from bmw.

What to do....hard to sell this baby and settle for one of the "regular" colors. But mixed info on brakes and 4mos of warranty left are looming....
I know the feeling of not needlessly wanting to part with a car that's still very nice, unique, and I'm sure somewhat sentimental in value.

Can you explain the USAA statement better? I don't understand the quote, 4 years, up to 100k miles and -8500 dollars - just lost a little bit here.

On the pads/rotors. Good job getting them weighed, but even that can be misleading due to pad material buildup and the low total wear margins. You do the pads early to avoid degradation of the rotor is my understanding - yes running costs are not low, but they're excellent brakes.


What made the instructor say you might need to do the rotors?

Also - Wondering what your pads looked like compared to new ones when the rotors were weighed - and how much track use?

It sounds like you did no notable wear to the rotors - if that's through half of the pads and 6 or 8 days, that's excellent to hear. This case would follow the logic of; do pads at 50% material to minimize rotor wear.
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      07-09-2018, 05:16 PM   #56
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^^^those pads look to be well below 50%^^^

Generally, you should be looking at the thickness of the friction material (I.e. excluding the backing plate).
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      07-09-2018, 09:55 PM   #57
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Quote:
Originally Posted by Dave 90TT View Post
Let's be honest here...for those of us who actually track our Ms, is there a need for upgraded brakes, other than pads and fluid?

I mean, seriously, Itrack my M, on r-comp tires, and with a tune for more HP, and have never had any brake fade. I get the improved looks of a bigger piston, but can't see the performance need for upgraded brakes.
+1
I track my OE F80 steel brake setup with almost zero fade. The street PSS tyres give in before the brakes.
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      07-13-2018, 06:14 AM   #58
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Quote:
Originally Posted by ckortane View Post
Thanks for the reply.
So the usaa warranty coverage for $8500 would be a warranty for an additional 4years or total of 100k miles. My car currently has 40k - so another 60k miles or 4x years - whatever comes first. I checked with bmw and platinum for addl 3yr and total of 75k was almost $9k!
They offered a 3rd part called axiom which was a more reasonable $3500 with the same terms as the USAA warranty.

My instructor thought the pads were way below 50% but the reality is they are both right at 50%. He said the rotors look like the stress cracks are getting more pronounced but I've looked at others and they all look quite similar. I'm going to post my rotors and pads pics that I took just before my track wkd.

If I keep the car will get new pads very soon
Judging from the wear indicators on your rotors, they seem to be 50-60% worn. As for the pads, when the pad material thickness gets thinner than the backing plate is my personal threshold for replacing them. Some of your pads are nearing that.
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      07-14-2018, 12:42 AM   #59
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Quote:
Originally Posted by ckortane View Post
Right
I'm debating on whether I sell the car and move into a 18/19 or perhaps look at extending the warranty. Or just go no warranty, replace the pads and then look at the m2 comp brake kit retrofit for before track season starts.

I was pretty disappointed to have to "retire" early at my last event due to concern about pads/rotors.

Again hearing from bmw service who weighed the rotors they still have 190grams and 40 grams available in weight - which is about the same number when new. So it's a bit confusing getting different info from different sources. My instructor was saying that the rotors are on the way to being replaced. But the weigh says the that they have tons of life left.

Learning that the 19s won't offer individual colors until 1/19 (SOP) makes me think better to just hold onto my car. Wish it had zcp (it's a 15) but has all sorts of other goodies including 666wheels / m perf exhaust / cf parts.

I got a quote from usaa for 4yr/up to 100k miles, - $8500!!! Can't get a dealer to respond and provide the options from bmw.

What to do....hard to sell this baby and settle for one of the "regular" colors. But mixed info on brakes and 4mos of warranty left are looming....
Slightly off topic but your M4 is the perfect spec. Tanzanite, Comp and 6MT! Well done
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      07-31-2018, 04:39 PM   #60
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      07-31-2018, 04:56 PM   #61
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Also, with regard to the talk around the servo's - I think that its not something to be concerned about as the servo is only changed if you have CCB's. These are regular iron rotors - so doubt the M2 comp will be getting a servo upgrade when spec'd with the 2NH package.

Unless I've missed some comms to that effect?

The piston sizes between the 6 pot / 4 pot and 4 pot / 2 pot is very similar as we have seen from info posted elsewhere by Racing Brake.

Master cylinders are also the same between cars with the 4 pots / 2 pots and the cars with the CCB's.
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      08-04-2018, 04:59 PM   #62
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As soon as this kits released I’m fitting it to the F81
Apparently it’s not being released to early 2019 but I think sooner.


Last edited by 63NP; 08-04-2018 at 05:19 PM.
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      08-04-2018, 06:16 PM   #63
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Quote:
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As soon as this kits released I'm fitting it to the F81
Apparently it's not being released to early 2019 but I think sooner.

How do you drive with that much of a wheel poke? Shit must rub
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      08-17-2018, 04:14 PM   #64
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How do you drive with that much of a wheel poke? Shit must rub
No rubbing whatsoever. I was surprised myself
Donít forget wheel your rim goes up it cambers in.
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      08-19-2018, 12:54 PM   #65
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63NP, Words don't express how much I love your freakin' car. I'll pay for wallpapers of pics!!! Seriously. I've owned an Audi S4 Avant (LOVE wagons!!) here in Texas and would sell my '17 F80ZCP to get a wagon version...you're killing me man!
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      08-20-2018, 05:24 AM   #66
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Quote:
Originally Posted by 63NP View Post
As soon as this kits released Iím fitting it to the F81
Apparently itís not being released to early 2019 but I think sooner.

Why wait - Cotswolds quoting ~ £1370 all in for 400/380 discs and pads and are able to source them quickly from factory - you then need the CCB calipers....
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