05-17-2022, 10:00 AM | #67 | ||
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It's driven me nuts forever!
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05-17-2022, 10:07 AM | #68 |
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Is the brake squeal problem only an issue with the M5 or does it happen across all the other M cars/suv's? We just got an X5 Msport for my wife so just wondering if we can expect this issue.
I read that Brembo sources the brakes for the true M cars. I've owned a Hellcat and a Mustang and the 6-piston Brembos on those cars don't make a sound. Not an M car but still... |
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05-17-2022, 10:07 AM | #69 | ||
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I agree with you — if they wanted to fix this, they easily could. But for some reason that I still can't seem to understand, they don't
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05-17-2022, 10:13 AM | #70 | |
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05-17-2022, 12:00 PM | #71 | |
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When I got the M5 CS, it only came with carbons. I would not have chose those, because replacement costs are pretty high. I spent Sunday after my second track event this year replacing the front pads. They were ALMOST to the wear sensors. For $1000 front pads from dealer (and $600-700 over the internet with discount), that's pretty steep. The ACG/Porterfields are just a less aggressive compound, so they can't brake as hard as the OEM. Both are good pads but the characteristics of pads are what they are. Shawn |
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05-17-2022, 12:20 PM | #72 | |||
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05-17-2022, 12:24 PM | #73 | ||
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Too bad on a car this nice and this expensive that I can't have my cake and eat it, too.
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05-17-2022, 12:38 PM | #74 | |
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Shawn |
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05-17-2022, 01:03 PM | #75 | ||
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I have also tried applying full force braking from about 100 to 0 a few times in a row in the middle of nowhere on multiple occasions. It is a temporary solution for typically a day at best, but then always returns. I would imagine that doing the braking from 150+ miles per hour gives you temporary respite, albeit a longer one. Are you doing that kind of braking on a track day, then driving the car normally for say a week, and then doing a track again and not having squeal in between?
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05-17-2022, 02:23 PM | #76 | |
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05-17-2022, 02:30 PM | #77 | ||
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05-18-2022, 10:55 AM | #78 | |
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They were RIGHT at the wear indicator. I'm kinda surprised they didn't trigger it. Shawn |
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05-18-2022, 11:34 AM | #79 | |
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I drive the car to and from the track and intermittently in the meantime. The thick layer of brake pad on the rotors then keeps the squeals down. This is how brakes are supposed to work (but just street pads can be made to do this, it's just harder to make happen, and they don't brake as well at high speeds). About 6 100-30 mph stops on the late night expressway might help you avoid this trouble. You could try the other compounds. It will just cost you some cash $ Shawn |
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05-18-2022, 01:52 PM | #80 |
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Powder blue Subaru? Definitely two girls from the "woke" tribe.
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05-18-2022, 01:54 PM | #81 | |||
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This is just fucking ridiculous you have to do this. Maybe BMW will actually do something about this the first time someone dies going from 150 to 60 and sues their asses all because they were trying to bed in their loud brakes. I'd rather crappier brakes if it meant they were quiet.
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05-18-2022, 05:09 PM | #82 | |
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05-18-2022, 07:15 PM | #83 |
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LOL, the WOKEST!
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05-18-2022, 07:17 PM | #84 | ||||
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05-18-2022, 07:20 PM | #85 | ||
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05-18-2022, 10:55 PM | #86 | |
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With that said, if everyone says that IS the fix.... where do they get this information from? Since it is unlikely BMW recommends this. What do they actually recommend.... Nothing? It's an issue, poor design, and a lot more people have the issue than dont. Ive owned 2 m5's f10 and f90, several years apart. They BOTH did it. A good friend has an f90. Same thing. So in my immediate circle involving M5s, we are 3 for 3. LOL. That tells me the majority have the squeal. There is a video on this forum somewhere with the M division engineer actually talking about the brakes squealing after being wet being normal. But he also states the squeal for prolonged period of time, is indeed NOT normal. So who's right who's wrong? Ive had 3x AMGs, 2x Lexus ISF, 911, f10, and f90 now, and the only brakes from those 8 cars to squeal were the f10 and f90. Odd? Not really, they both have the same brakes. And all the other cars definitely had similar performance brakes, 6 piston upfront, brembo sourced. Etc. Its a flaw in the design, and BMW doesn't care to fix it. Options are to replace the brakes with aftermarket (questionable if any of these options work long term), sell the car, deal with it, or get BMW to fix it (aka DEAL WITH IT). It sucks, $130,000.00 car sounds like a school bus. But the positives of the car outweigh it for me. So I just complain literally every single time the car is in for service big or small, I make them check the brake squeal and tell them its gotten worse. Maybe one day there will be a service bulletin to fix. LOL. Last edited by jnotrom711; 05-19-2022 at 12:49 AM.. |
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05-18-2022, 11:00 PM | #87 |
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Found the video!
At @2:30 they talk specifically about the noise and mention if it's permanent it's not normal. Words straight from the M engineer. So why do the dealers say its normal and basically to "deal with it" Saving this link for the next time im in the dealer LOL |
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05-18-2022, 11:10 PM | #88 | ||
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Further, manufacturers of products are generally required to design around or "design out" certain product misuses. They've done completely the opposite here. That is to say, the manufacturer has a duty to take precautions to prevent certain anticipated misuse. That is certainly not the case here. The misuse is anticipated — BMW knows product users are doing this to silence the brakes, yet they aren't doing anything to prevent it (warning not to do it, or, making the brakes quiet enough that people don't use this dangerous method to silence the brakes). Essentially all the end user would have to prove is that a "reasonable alternative design" to the existing product design that causes the problem exists, that the cost to implement it is minimal, and that implementing the alternative design would prevent the product misuse. This generally results in strict liability on the manufacturer, absent other considerations that I won't get in to here.
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