07-20-2023, 04:58 AM | #23 | |
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Endless track+street pads are for more hardcore applications. |
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07-20-2023, 12:19 PM | #24 | |
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Heavy track users typically go for more aggressive pads from companies with proven usage in racing (pagid, endless, ferodo, or local companies like cobalt, carbotech etc.). Aggressive pads are typically bad for street use (compromised braking at low temps or high wear on rotors, high dusting, high noise), but are great for track (little to no fade, consistent, good modulation, slow pad wear at high temp). If you only intend to track once in a while, or you only drive your car on streets, then these characteristics are not nearly as important, and it makes more sense to optimize for desirable street qualities (low dust, low noise, good bite at low temps). Brands like EBC, iSweep, and many of the other brands often discussed on these forums make good pads for these applications. Having said all of this, EBC does make hardcore track pads as well, and companies like endless or ferodo have street pads as well. However, different brands are focused on different markets, and hence have a better reputation within those specific communities. To answer your question more directly, the reason you always hear about EBC and iSweep etc. is because the majority of the bimmerpost community is street-focused. Tracking is expensive, dangerous, inaccessible, or flat out unappealing to a lot of people.
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07-20-2023, 10:58 PM | #25 | |
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08-20-2023, 04:28 PM | #26 | |
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08-21-2023, 03:30 PM | #28 |
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AP9668 with DS3.12.
I have yet to test them. It’s over 100 degree here in SoCal.
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01-23-2024, 09:56 PM | #29 | |
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Any fade after long sessions? How did having different compounds front to rear affect braking? Why not XP12 all around, were the rears locking with XP12? How are they for occasional street and canyon use? Noisy or quiet?
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01-24-2024, 03:07 PM | #30 | |
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01-24-2024, 06:03 PM | #31 | |
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Heavy cars like ours need pads that are able to deal with a very high peak temperature which are generally the aggressive pads. The downside is that those pads wear quickly but at least they don't wear the rotors as quickly as the endurance pads. I have some RSL29s I haven't tried yet but once those Pagids are worn, I'm going with CarboTech's XP20 front and rear. Long ago, I did talk to Carbotech's specialists and they suggested against the XP20 front and rear for my E92 track car due to bias issues, but I never had those. The E92 with slicks wore out XP12s in a couple of days and I can get double the track days out of the XP20s so that's my justification recommending XP20 at a minimum for the heavy and quick G8xs.
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01-24-2024, 08:04 PM | #32 | |
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01-24-2024, 09:04 PM | #33 |
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Not at all. If you use all of the brake pedal frequently, you'll have to put a little bit more effort into threshold braking. However, it's not much more difficult than with the stock pads.
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01-25-2024, 11:11 AM | #34 |
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I have been using Cobalt pads exclusively since January of 22. It was my worn OEM pads and backing plates that Cobalt used to develop their line of G80/82 pads. I also served as their test mule.
In my opinion they are one of, if not the best pad available for these cars. I do most of my driving at Sebring which is as tough on brakes as any track out there. Top speed for me is @ 145 with turn in at @ 70, and there are lots of other heavy braking zones to keep you focused. Sessions are 30 min. I find myself bracing against the wheel, and I have never experienced the slightest fade, mushiness, or wobble. They also give good longevity. The rears will always wear out first, but that is physics, and there is no way around it as long as you are using the OEM brakes. I also leave my pads on year round, and daily drive them. What can I say, I am a lazy SOB. The only noise that they make on the street is a very soft swooshing sound which no one has ever noticed but me (I have asked passengers). At speeds below @ 5 mph they will sometimes squeal slightly to the stop (no worse than OEM's). With experience I have learned how to eliminate this (mostly).
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01-27-2024, 01:22 AM | #36 | |
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Next time just get the XP20s and you'll be happy with them. Unless you don't have much experience with this type of aggressive pad, then stick with the 12s until you're ready for more braking power.
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03-10-2024, 06:40 PM | #37 | |
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03-21-2024, 10:20 AM | #38 |
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I run G-Loc R16 (comparable to Carbotech XP20) in my ATSV which is comparable to a G8x..they work great with RE71RS but are a bit on the aggressive side for the Conti ECF.
I think the R16/XP20 would probably be fine for a Cup2, but admittedly that'll be driver technique dependent. |
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03-25-2024, 11:13 AM | #39 |
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Shouldn't PFC be rolling out their compounds for the G8x platform soon? https://pfcbrakes.com/bmw-brakes/
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04-11-2024, 08:49 PM | #40 |
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Any follow up on this? I'm looking for a track/street pad that isn't to noisy, but a bit of an upgrade over factory. Compromises on cold braking is okay. How are the MX72-PLUS on track? Noisy on street?
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04-12-2024, 12:35 AM | #41 |
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My iSweep 2000s had one autocross day, five sessions at Streets of Willow (super easy on the brakes), and five sessions at Chuckwalla. Essentially, the autocross and SoW didn't cause much wear at all. I checked my pads before I started my sessions at Chuckwalla and I had 90%+ pad life left. By the fifth 20-minute session at Chuckwalla the fronts were completely gone.
I swapped the iSweeps for Pagid RSL29s on a recommendation from tom @ eas before I went to Buttonwillow. After nine 25-minute sessions at Buttonwillow (which, in total, was much harder on the brakes than what the iSweeps had been through in their entire life) the pads look great. Maybe 20% pad wear in that time, and even that is likely overestimating. On the street, so far, the cold braking is good, initial bite is fantastic, and the noise is much less than I was expecting. I do get a good "Obi-Wan Kenobi powering down the tractor beam" sound when braking from speed, but I don't get much noise at all at low speeds. I can't comment yet on the brake dust, because I've only had my street wheels/tires on for a couple of days since install and I haven't driven much, and I just had the car detailed - so no brake dust right now! We'll see what happens in the next few days though.
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04-12-2024, 09:02 AM | #42 | |
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On the street, when I first put them on, they were similar to a school bus brakes. Once the layer of stock pads were cleaned off the rotors in about 40-50 miles later, I bed the RSL29s in and the noise went away completely. It is now coming back very slightly. After the next event in a couple of weeks, I am sure there won't be any noise again. I might have to bed them in again two months afterwards. Brake dust is far less than stock pads, even after the track event. However, we had pretty cold ambient temps, so in summer I expect the wear and dust will increase.
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04-12-2024, 09:08 AM | #43 | |
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Thank you in advance.
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04-12-2024, 09:49 AM | #44 | |
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Meanwhile on track with excessive brake dust, sand, dirt, chunks of tire, and occasional fluids, plenty of opportunities to get those pistons dirty. It's only acceptable for track use because those brakes should be getting inspected before each event so a problem is caught sooner than a street driven car that rarely gets inspected.
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