WANTED - Z4 M AP Big Brake Kit Front and Rear

[pHilli0]

Hi Guys,

Having done a couple of track days now I am looking to buy some better brakes for my 2006 M Coupe. I am running standard 18" wheels so clearance shouldn't be an issue, I hope. Has anyone got some AP brakes in decent condition they no longer want? I am looking for both front and rears ideally, but I will start with the front if needs be.

Z4M coupe Front - 6 Piston Kit CP5575-1010 (Black kit CP5575-1010BK.G8)
Z4M Coupe Rear - 4 Piston kit CP5144-1004 (Black kit Black Caliper Kit Number: - CP5144-1004.G8)

I can collect within an hour radius of Hertford, Hertfordshire.

Cheers,
Phil

 

[SamUK]

How much are these new?

 

[Beedub]

around 4k with red paint and anti knock bad springs... around 4800 with pagid pads ( needed) and a long ass wait.

 

[Beedub]

sorry OP but your not often going to see these for sale on here.... infact I've seen 2 sets in 8 years.

 

[SamUK]

Wow..

What about Brembo's?

 

[BMWZ4MC]

Beedub's right - I still live in hope

OP, there are various K Sport BBKs that have been shown to approach the performance of the major companies for half the price. Worth considering (it's on my list in due course).

Otherwise, decent fluid and braided lines with EBC Bluestuff pads and supplementary brake cooling ducts go a long way to solve the shortcomings of the OEM set up manifest when it's placed under extreme duress. I've been running my ///M with this set up for sometime and don't suffer with fade, only a little inconsistency of pedal feel after 20 minutes or so of really hard track use. I do get through pads at a fairly rapid rate but I prefer short technical tracks that are very hard on brakes and I'm running semislicks which can be really loaded up on a dry track before traction is lost.

 

[Beedub]

id definitely consider k-sports with the new single piece forged caliper, they are awesome! also they are really proving themselves in competition and the price point is literally half!! id have no probs putting them on my car.

 

[simonlpearce]

Aren't the likes of K-Sport just rebranded brembo's or Wilwoods or something similar? Fairly sure if you look at the designs you will see some remarkable similarities.

 

[sam3]

what about the Performace BMW BBK from the 135i?? theres a guy on the m3cutters that fabricates the brackets so they fit directly on the m3 and arent they the same as the z4m??? i know theyre not quite APs but better than the k-sport

http://forums.m3cutters.co.uk/showthread.php?t=67110

 

[pHilli0]

Beedub's right - I still live in hope

OP, there are various K Sport BBKs that have been shown to approach the performance of the major companies for half the price. Worth considering (it's on my list in due course).

Otherwise, decent fluid and braided lines with EBC Bluestuff pads and supplementary brake cooling ducts go a long way to solve the shortcomings of the OEM set up manifest when it's placed under extreme duress. I've been running my ///M with this set up for sometime and don't suffer with fade, only a little inconsistency of pedal feel after 20 minutes or so of really hard track use. I do get through pads at a fairly rapid rate but I prefer short technical tracks that are very hard on brakes and I'm running semislicks which can be really loaded up on a dry track before traction is lost.

Thanks for this info I appreciate it. I am currently running EBC Yellowstuff pads on the standard OEM discs. No other mods. I always wondered if better lines / fluid would make much of a difference clearly it does from what you are saying. I found the yellows to be good at first but after three or four laps they would seem to loose their stopping power quite a bit. Can you give me some details on the ducts.. are these custom ?

 

[pHilli0]

sorry OP but your not often going to see these for sale on here.... infact I've seen 2 sets in 8 years.

That is what I feared to be honest. Considering how rare the car is whoever has spent 4k on brakes is probably a proper track fiend and they aint gonna come up for sale.. shame.

 

[Beedub]

Aren't the likes of K-Sport just rebranded brembo's or Wilwoods or something similar? Fairly sure if you look at the designs you will see some remarkable similarities.

no. the similarities are for a reason however. On another note theirs only so many ways a caliper can look, when you dip into the R & D thats where the money is spent, that said, k-sport latest stuff is performing as well as the long standing companies now days...... as sad before id have no problem using a set on my car.

 

[mmm-five]

Thanks for this info I appreciate it. I am currently running EBC Yellowstuff pads on the standard OEM discs. No other mods. I always wondered if better lines / fluid would make much of a difference clearly it does from what you are saying. I found the yellows to be good at first but after three or four laps they would seem to loose their stopping power quite a bit. Can you give me some details on the ducts.. are these custom ?

If you want to stick to the EBCs, then the BlueStuff are a good upgrade over the YellowStuff. Wear is about the same too.

If you want something better, and are not worried about the cost or life, then the Pagids are great pads. Although be warned that they'll cost 2-3 times as much, and in my experience will last less than half as long (I got less than 10k miles out of my front RSs, compared to over 30k out of BlueStuffs) - so a 4-6x increase in cost per mile - and are much dustier.

If you can live with that, then go for the Pagids. I'll be putting the Pagids (maybe the RSL series instead) in my Alcon calipers (with OE discs) once the custom brackets have been done.

 

[pHilli0]

Thanks for this info I appreciate it. I am currently running EBC Yellowstuff pads on the standard OEM discs. No other mods. I always wondered if better lines / fluid would make much of a difference clearly it does from what you are saying. I found the yellows to be good at first but after three or four laps they would seem to loose their stopping power quite a bit. Can you give me some details on the ducts.. are these custom ?

If you want to stick to the EBCs, then the BlueStuff are a good upgrade over the YellowStuff. Wear is about the same too.

If you want something better, and are not worried about the cost or life, then the Pagids are great pads. Although be warned that they'll cost 2-3 times as much, and in my experience will last less than half as long (I got less than 10k miles out of my front RSs, compared to over 30k out of BlueStuffs) - so a 4-6x increase in cost per mile - and are much dustier.

If you can live with that, then go for the Pagids. I'll be putting the Pagids (maybe the RSL series instead) in my Alcon calipers (with OE discs) once the custom brackets have been done.

Cheers I will consider them next time I change, I know the blues are not road legal but have better stopping power. Would love some Pagids if budget can stretch to them... To be honest I am toying with changing my lines and fluid from stock. Any views on which way to go? I am looking for an AP brakeline kit or similar. I saw some of beedubs 2011 post and he is talking about Goodridge (I assume it is this kit http://www.goodridge.co.uk/zinc-plated-brake-hose-kit-for-bmw-z4m-coupe-e85-and-e86). Can anyone recommend some good fluid to go with the goodridge hoses?

 

[BMWZ4MC]

...over 30k out of BlueStuffs....

:rofl: :rofl:

I can only dream of such things! I manage under 2000 miles from a set of pads these days!










But perhaps 50 - 60% of those are track miles

 

[BMWZ4MC]

Phil, I'm currently running a fairly expensive Motul fluid but I think it's actually less good than ATE Superblue, so I'll be changing back to that after a couple more track days. As for cooling ducts, Exdos has written a guide which I adapted only slightly including bringing the ducting out onto the face of the bumper:

http://www.z4-forum.com/forum/viewtopic.php?f=24&t=38775





The greatest improvements in braking ability have been combining the above with extensive suspension upgrades and semi slick tyres. Abolishing pitch under heavy braking means that all four wheels contribute more evenly to the braking effort. This combined with increased grip has shortened braking distances significantly. I can also carry more speed through the corners as my car corners almost flat.

Are you disabling the DSC on track? If you don't, the car will apply the brakes on every fast corner significantly increasing brake wear and likely overheating. I did three fairly gentle siting laps on an unfamiliar track with DSC on and the pads (Yellowstuff in those days) at all four corners were smoking in the pits.

 

[mmm-five]

...over 30k out of BlueStuffs....

:rofl: :rofl:

I can only dream of such things! I manage under 2000 miles from a set of pads these days!

But perhaps 50 - 60% of those are track miles

It's definitely the proportion of motorway miles between track days & ring trips that push the life of mine up - plus I'm not chasing lap times or trying to show an F1 scout that I'm a driving god

In previous years/cars, I was getting 3 track days (about 600 miles) out of a set of pads and a set of discs every 3 sets of pads.

 

[BMWZ4MC]

...over 30k out of BlueStuffs....

:rofl: :rofl:

I can only dream of such things! I manage under 2000 miles from a set of pads these days!

But perhaps 50 - 60% of those are track miles

It's definitely the proportion of motorway miles between track days & ring trips that push the life of mine up - plus I'm not chasing lap times or trying to show an F1 scout that I'm a driving god

In previous years/cars, I was getting 3 track days (about 600 miles) out of a set of pads and a set of discs every 3 sets of pads.

Expensive isn't it!

Of course, Bernie's told me I'm just too fast for F1 - it wouldn't be entertaining with me dominating every race :lol:

 

[pHilli0]

Phil, I'm currently running a fairly expensive Motul fluid but I think it's actually less good than ATE Superblue, so I'll be changing back to that after a couple more track days. As for cooling ducts, Exdos has written a guide which I adapted only slightly including bringing the ducting out onto the face of the bumper:

http://www.z4-forum.com/forum/viewtopic.php?f=24&t=38775





The greatest improvements in braking ability have been combining the above with extensive suspension upgrades and semi slick tyres. Abolishing pitch under heavy braking means that all four wheels contribute more evenly to the braking effort. This combined with increased grip has shortened braking distances significantly. I can also carry more speed through the corners as my car corners almost flat.

Are you disabling the DSC on track? If you don't, the car will apply the brakes on every fast corner significantly increasing brake wear and likely overheating. I did three fairly gentle siting laps on an unfamiliar track with DSC on and the pads (Yellowstuff in those days) at all four corners were smoking in the pits.

Your car looks the nuts. Like the idea of integrating into the bumper. Thanks for the heads up on the fluid. I am running stock suspension, I can see room for improvement. I haven't yet fully committed the car to a pure track weapon as you have done but I imagine your changes make serious improvements. As time goes on this is the direction I would like to go as I find little point in setting the car up for the road, living in the south there is traffic at 1am lol.

I always turn off DSC on track and on the road in the dry. I am no driving God but I know how to control the car pretty well on the limit and can hold a pretty average drift. Have you done any other mods for the track other than your suspension and tyres? I really enjoyed the two days I have done, at Snet and Bedford I had a blast even with the car getting tired/hot after 10 laps. And I plan on doing many more.

 

[BMWZ4MC]

Cheers mate. The easy answer is lots! KW Clubsports; adjustable camber plates and top mount reinforcement up front; RE top mounts at the rear; strut brace; RTAB limiters; stiffer, adjustable H&R ARBs front and rear with adjustable drop links; VT competition engine mounts; CDV delete; brake cooling ducts; braided hoses; DOT 5.1 fluid; EBC Bluestuff pads; AFE intake with RPi scoop; Remus backboxes; pedal covers with homemade adjustable throttle pedal extension (aids heel and toe); CG Lock (great for keeping you planted in the seat); light weight wheels and soft compound semislicks; a few little things under the hood, some for preventative maintenance and others to eek out a couple more horses; cosmetics such as aeroskirts, black grills, stubby, fang protectors etc. I've also fitted an aux lead and up to date nav disc - they don't make it faster but they do make journeys seem quicker
Soon to come are solid brake bushings (ordered) and maybe a stage II ESS supercharger (still considering the head vs heart man maths on that one).