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05-02-2019, 02:20 PM | #1 |
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Stock Brembo's not working in the rain
Back in November I bought a 2018 BRZ (new) that came stock with Brembo's (SportTech RS). I've been having trouble when trying to stop on the highway if conditions are wet. Basically, if I drive for a while in the rain or snow (about 10 minutes plus) without using the brakes, then, when I do press the pedal braking is significantly reduced. Meaning, it takes much longer to stop then normal. I'd describe the feeling as if the rotors are covered in oil so that the pads are smoothly slipping and not applying as much force as normal. After applying the brakes a few times it's almost as if they've been cleaned off and braking returns to normal.
For further reading on the issue:
I've taken the vehicle into the dealership a number of times now. They've confirmed there's no leaks in the system, the brakes are visibly in perfect condition and this is not an issue with the tires. Yesterday Subaru Canada called me suggesting that this may be a problem with ALL Brembo setups on the BRZ. Leaning towards the idea that these are performance racing rotors and not necessarily designed for driving in the rain for a long period without braking. I'm a little skeptical here and not entirely certain on how to proceed. Has anyone else experienced anything similar to this? |
05-02-2019, 02:33 PM | #2 |
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https://www.ft86club.com/forums/showthread.php?t=133236
Yes, There have been other threads about this....
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05-02-2019, 02:38 PM | #3 |
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Thanks^^ still trying to figure out the forum. I tried searching but couldn't find anything related.
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05-02-2019, 02:40 PM | #4 |
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Google is the best search tool. Type what you are looking for and add "Ft86club" , then you should have better luck searching.
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05-02-2019, 02:45 PM | #5 |
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2017 BRZ Performance Pack (basically same as SportTech RS) here. I noticed this same behavior with my Brembo's as well. Same circumstances too. Drive 10+ minutes without using the brakes and they seem to go away, then return after you've used them.
I've found it only to be an issue in the cold however. Any snow/rain under 30 degrees and it would occur...not every time, but often enough. It hasn't returned since it warmed up around here though, even when it rains. I would describe it almost as if the brake booster stopped working. Like I had to really hammer down on the pedal to get it to slow down. Kind of scary when you're getting off the highway and suddenly your brakes aren't there. Is it possible the discs ice up? Maybe the brake fluid isn't great in the cold? I'm not sure why it does it. But I've kind of stopped worrying about it since it warmed up. I'll be following what you find |
05-02-2019, 02:53 PM | #6 |
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Scary shit..
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05-02-2019, 03:08 PM | #7 | |
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05-02-2019, 03:18 PM | #8 | |
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Quote:
That other thread was a good read. It's nice knowing I'm not the only one with this issue but I didn't see any real solutions there. I'll be keeping my eyes peeled |
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05-02-2019, 03:36 PM | #9 |
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This is another thread with the same issue:
http://www.ft86club.com/forums/showthread.php?t=125666 The solution as of now seems to be to swap out the pads |
05-02-2019, 04:32 PM | #10 |
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I've experienced this on an older bmw i used to own. It was 100% caused by the brake pads I was running. Some crappy hawks at the time. Switched them out for something else [sorry can't remember the brand] and it was fine.
But I'll take them off your hand .. for scientific research purposes, in exchange for some nice stock brakes. |
05-02-2019, 04:54 PM | #11 | |
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05-02-2019, 06:18 PM | #12 |
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I have this same issue with my AP Racing BBK. It's always a bit of a butt-clencher when you are on the highway in the rain, and go to use the brakes, and not much of anything happens for that first second-or-so. I'm running APF404 pads, which are apparently almost identical to Ferodo DS2500s.
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05-02-2019, 07:03 PM | #13 |
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My 2 cents
Street pads for the street and autocross (low dust, kind to rotors) Track pads for the track (squealing rotor eaters) Whilst high temp pads are required for the track, they are a definite hazard on the street. You WILL lose stopping difference between the 2 when cold. I use to just swap them out prior to the first session. Easy peasy lemon squeezy
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05-02-2019, 07:26 PM | #14 | |
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Quote:
OP, everything I've read sounds 100% like the pads are either not bedded properly or (more likely) under temperature. I don't know how to fix this, besides either (1) riding the brakes a little (terrible solution); or (2) getting a more daily-friendly brake pad. I'm not sure what the OEM pads are on the PP, but if they come with a "hybrid" type pad like a DS2500, then you should ditch those and get some basic ceramics for street use. |
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