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02-03-2020, 08:47 AM | #23 | |
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I wouldn't say my issue is the brakes are mushy due to air in the system (though that DID also happen to me as well this year) it would be the inconsistent pedal travel. If i didn't "pre-load" the pedal, most of the time my brakes were not firm at the top of pedal engagement resulting in a long travel, thus making it more difficult to replicate braking points. I already have stainless lines, was running ATE 200, and added cooling halfway through season. I also did a brake bleed before each event, taking out ~ 0.5 liter each time. My reference points are my '04 3.0i and the misses '17 JCW. Both have WAY better pedal feel being nice and firm from the start of engagement. I am intrigued though about this statement: "the pre-emergency stop pressurising the brake line when you come quickly off full throttle - thats caught me a few times" I'm not familiar with what this quirk is, maybe we are talking about the same thing?
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2017 M2 - Camber Hubs, MPE, and some other goodies 2006 Z4M - Epic Tune / Eventuri CAI / Euro Headers / Stromung / FA 500 / AS SSK / Arc 8s 2004 Z4 3.0i - Gone, but not forgotten! |
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02-03-2020, 03:11 PM | #24 | |
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For front fitment, this is a good reference chart, though it's made for the E46M (similar fitments) and specific to Apex wheels. You'll notice that for RR 911 brakes, the ARC-8 doesn't fit without a spacer but the same spec EC-7 does. It all comes down to spoke clearance. https://support.apexraceparts.com/hc...3.51.38_PM.png
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02-26-2020, 10:45 AM | #25 | |
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Any 2001 to 2011 Non-S Boxster (front) brake pads will work for the rear? So any of these would work, right? https://www.ecstuning.com/Porsche-20...ng/Pads/Front/ thanks |
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02-28-2020, 10:23 AM | #26 | |
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Garage List E86 Z4 M [10.00]
F15 X5 xDrive35i [9.17] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.53] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [8.93] |
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02-28-2020, 04:40 PM | #27 |
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05-08-2020, 02:09 AM | #28 | |
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Garage List 2004 e46 M3 Convert ... [7.50]
2023 M4 CSL [8.17] 2007 E86 M Coupe [0.00] 2008 e93 M3 [0.00] 2019 M2 Competition [9.67] 2017 f48 X1 xdrive 25d [6.00] |
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So I decided to fit the Porsche brakes on my e46 M3. Since I am not in the US I did not buy from RallyRoad but I sourced the calipers from the UK and bought adapters for both front and rear from Burkart Engineering. For pads I opted for ferodo DS2500 front and rear. I am having the following problem (other than excessive brake squeal). I get an almost constant judder/vibration/squeal from the front right brake assembly while driving which is unacceptable. It goes away when I apply the brakes (that's when the squeal kicks in). The guy who installed the system claims that since this is not OEM, there is margin for variance with the adapters that may cause the pad to contact the rotor at an angle and that causes the judder. I told him that this mod has been going on forever both stateside and elsewhere and that I have never seen anybody mention issues like this. I think that if there is room for error it should be with machining the calipers which was his responsibility. Do you guys know of anybody that faced such issue and how they worked around it? Any ideas? Are the pads perhaps thicker than others ? |
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06-22-2023, 08:53 PM | #29 |
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Garage List E86 Z4 M [10.00]
F15 X5 xDrive35i [9.17] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.53] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [8.93] |
Bump for those curious… confirming rear 224 M wheels easily clear the 996 Brembos without need for spacers. I’m rolling on stock diameter tire size (255/40-18) with factory suspension, other than camber washers.
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06-23-2023, 10:37 AM | #31 |
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Garage List E86 Z4 M [10.00]
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No rubbing, not at least on street. Track remains to be seen but I’ll know by this weekend.
Keep in mind 255 tread width for one tire can be very different from another. I’m running Michelin PSS (not 4S) on a 9” rim. To answer your question though, I pulled strut tower pin & added camber washer kit to maximize negative camber with stock suspension. Fronts are probably around -2.8*. As much as I’d like to run 265/35, pretty sure that will rub the liners. |
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07-12-2023, 11:22 AM | #32 |
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For those curious, 18z w/ 362mm rotors do clear stock 18" wheels. Not mounted on the car yet so I'm not sure what size spacers is needed to clear the front wheel spokes.
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08-03-2023, 09:25 AM | #33 |
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I went with the front kit from Freaky parts which are stock 4 pot calipers off of Renault Megane RS Trophy R and also Porsche rears.
https://freakyparts.co.uk/collection...-big-brake-kit Mind you I have not tried to put the stock wheels on. I am running Apex SM-10 and these wheels have plenty of clearance. So far so good. Stopping power is really good. No fade on track with RBF600 fluid and Hawk HP+ pads. And also the cool thing about the pads is that these calipers use a very common pad shape that is also used on STIs, Evo, even the new Civic Type R I believe so they're fairly cheap and available. The larger front pads cost less than my "porsche" rears off a non-s boxster :/ If you notice FP also offers a 360mm rotor kit which is basically same just a different bracket, however I can confirm it does not work on Z4M. The rotor hat of the 360mm E92 rotor has a different offset, it goes deeper and rotor hits the tie rod ball joint. Cannot even bolt it on. It can be done on M3 though. Pad changes do not require you to take the calipers off which is also a benefit for quicker service. And also the pads sweep the rotor end to end, no rust ring. I did order the cheap brembo pads that come with this kit and had them on for a bit, both street and track. Conclusion: they're quiet, have quite very good stopping power for spirited street driving but on track after 4 x 20-25min sessions and more than half of pad is gone and they started making weird noises and making grooves in the rotors (it sounded like really bad resonant squeal on hard braking). In other words these are great but for street only. And another option: https://www.vagbremtechnic.com/front...lipers-bk0014/ Nice writeup here: https://thebuildjournal.com/reviews/...e46-m3-review/ These calipers might be slightly bigger than Brembos mentioned above however I am not 100% sure. The difference is the FP kit has 4 x 40mm pistons, and the ones off Aston Martin DB9 have 40mm and 44mm pistons. So even more piston area to work with. But these are also more expensive Either choice is better than tried and true Porsche option in my opinion. Last edited by belcom; 08-04-2023 at 01:38 PM.. |
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