02-09-2024, 05:44 PM | #1 |
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Slotted rotors for M Sport?
Anyone know of anyplace selling slotted rotors for the M sport brakes (374X36)? I've been searching for the last hour and can't find anything. I must be missing something.
I need brakes due to pulsation and rotor grooves. I'd like to upgrade to M Sport brakes in the process. While I'm doing that, I want to install slotted rotors to help extricate brake dust a little better to hopefully stave off deposits and pulsations in the future. |
02-09-2024, 06:06 PM | #2 |
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I bought these aftermarket slotted rotors (front/rear) from Brakenetic over 2 years ago. If interested, you would need to call them directly and speak to them about your requirements along with any questions you may have.
https://brakenetic.com/ |
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02-09-2024, 06:21 PM | #4 |
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You can call them directly. Really friendly folks who will take the time to talk to you about anything related to brake. Well, this was based on my own experience dealing with them over the phone!
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02-09-2024, 06:21 PM | #5 | |
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Can you tell me how they are constructed? Are they aluminum hats? How long have you had them? Have you had any issues with the hats rusting (if they aren't aluminum)? Do you live where they salt the road during snow? |
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02-09-2024, 06:39 PM | #6 | |
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Unfortunately, you would need to speak to them about these rotor constructions, and if the rotor hats are made from aluminum. |
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02-09-2024, 06:47 PM | #7 |
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Thank you! I did speak to them. They do an electro-coat on them but he recommended spraying the hats with high temp paint. He also said they are trying to figure out what "UV coating" Brembo is using, because they seem to be having a lot of success with that.
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02-10-2024, 01:01 PM | #8 |
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i had slotted rotors once and never again, they are very loud under braking, i've seen a few options on ebay but they are usually a single piece rotor, most of the g30 rotor options are 2 piece with the aluminum hat, which are lighter and better at dissipating heat
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02-10-2024, 07:38 PM | #9 | |
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02-10-2024, 09:59 PM | #10 | |
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02-11-2024, 09:46 AM | #11 |
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I've had slotted rotors before, just basic spiral cut, I think like 10 slots or so, with yellow stuff pads. Never had any noise issues on that 335i.
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03-05-2024, 08:26 AM | #12 | |
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I'm getting a mild dragging pad or maybe heat shield contact sound from (I think) the right rear corner but it's not consistent. Some drives it's there, some it's not. I do get a low speed squeal from the fronts, mostly when coming to a stop. They make a pretty good racket when I reverse out of a parking spot. The fronts have already worn off the cross hatching from when the rotors were machined but the rears seem to have barely touched the rotors. I did a few low speed e-brake activations to make sure they were actually working, and they are. Though, I don't know how much they are meant to grab. With a hand brake, I'd be able to lock up the rears but the electronic e-brake seems to work more like a moderate pedal push. Can anyone confirm how the e-brake works on theirs? Say, 10MPH, hold the switch up. (If you don't hold it, it will automatically release after a half second, or so.) Is it a hard stop, a moderate stop, or do the tires lock up? |
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04-22-2024, 03:38 PM | #13 |
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Never followed up on this. I found that I apparently didn't get one of the bleeder screws on the front calipers tight enough. It had a small leak but apparently that was enough to firm up the pedal and now I'm very happy with the braking performance.
Brakes still make a little noise, badly in reverse, but it's only a problem when I'm parallel parking at a restaurant and I'm mentally telling the bystanders, "I promise my brakes aren't bad. This is just what they do. Please don't judge me." |
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04-26-2024, 08:50 AM | #14 |
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Well, apparently it is possible to install the pad retainer clips on the front calipers upside down. I had my car into the shop for pothole repairs. He was bothered by the noise, and did a pro bono looksee at them. Turns out, I installed the front clips upside down. I didn't even know that was possible. He said, the way they are shaped, he could easily understand how it happened.
Anyway, as of right now, all the noises are gone! I may have to give up on DIYing my cars. I seem to be making some pretty low level mistakes, lately. lol |
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