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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > Cool Carbon Question



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      10-13-2011, 06:38 PM   #1
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Cool Carbon Question

Apologies in advance to everyone as I am not a 3 series owner but a 6 series owner. Im taking several steps to reduce the brake dust situation as I have purchased a set of $7,000 HRE wheels that are uncoated aluminum. Part of that process is sealing them with a clear coat, as well as purchasing lower dusting brakes.

My question:

The six series, when the "Sport" button is engaged, has something like "engine braking". There is a more accurate term for this but basically the engine slows itself down as you approach a stop, and you dont even have to press the brake once you get down to a certain speed. You can hear the car downshifting itself and reducing your speed noticeably, but smoothly. This is a huge luxury, and helps immensely with brake dust, but will this feature be gone when I install these new pads, and some aftermarket stainless steel tubes?

Does anyone know if the brake pad sensors that come with the car will still operate as normal?

Thanks
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      10-14-2011, 10:08 AM   #2
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My Cool Carbon pads are almost as dusty as the stock pads. I drank the CC cool aid and I am not impressed at all. The new BMW pads are less dusty than The CC pads on the 2010 1/2 up 3 series. I will be going back to the newer stock pads or Hawk.
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      10-14-2011, 10:12 AM   #3
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akebono low dust pads are good..

to answer your questions, you wont lose that feature by swapping pads. engine braking does not use the brakes.. it uses the gears.

the brake bad sensors will be transferrable to whatever pads you get.


why are you getting SS lines? no real reason unless you track which im sure you don't
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      10-14-2011, 11:53 AM   #4
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The installation of the Cool Carbon pads will have no effect what so ever in the engine down shifting or any other computer or brake pad sensor related issues. The 3-series actually does the same as you have described in the Sport mode.
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      10-14-2011, 12:55 PM   #5
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My brake pad sensors didn't fit the cool carbons, they sensor clip was larger than where it attached to on the pad. It was a very loose fit. And yes they are pretty dusty, not as bad as OEM though. My wheels have less dust but the body of the car gets dirtier.
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      10-14-2011, 05:01 PM   #6
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Cool Carbon pads will dust a greater amount the first several hundred miles until fully seated; if installed on used rotors it can take a bit longer. Cross drilled rotors will of course create a greater amount of dust than flat rotors. Generally dust has been reported at half or less than OE. If you found the wear sensor to be loose than the small snap clip on the sensor is likely not fully engaged or has fallen off.
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      10-16-2011, 11:43 AM   #7
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I dont understand how one guy can say dust is reduced by 50% or more, and another guy says theyre just as dusty. Thats a huge range in perception. Then another guy adds another level of complexity. His wheels are fine but the car is dirty?

I really need to know if these pads are lower dust or not. Its the only reason im getting them
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      10-16-2011, 11:57 AM   #8
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can these be compared with the pads BMW puts on their 2011 vehicles? I had a 09 E90 before, and the stock pads were pretty dusty. I am however amazed with my 2011, where a weeks worth of driving, and hard braking only requires a damp soapy cloth to wipe, and even at that the rims are barely dirty.
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      10-16-2011, 12:16 PM   #9
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im about 1,500 miles into my 2010 six series and honestly the brake dust seems less than my 2006 sixer did. But its difficult to tell.

I could get super low brake dust pads but then quality suffers. These were touted as 50% less brake dust after the first few hundred miles and *better* quality than stock.
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      10-16-2011, 03:33 PM   #10
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I hear Akebono's are very low dust. I don't know from personal experience, just word of mouth.

http://www.tirerack.com/brakes/brand.jsp?brand=Akebono
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      10-16-2011, 10:39 PM   #11
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Quote:
Originally Posted by SixerBurger View Post
I dont understand how one guy can say dust is reduced by 50% or more, and another guy says theyre just as dusty. Thats a huge range in perception. Then another guy adds another level of complexity. His wheels are fine but the car is dirty?

I really need to know if these pads are lower dust or not. Its the only reason im getting them
I have had them for a few thousand miles now. Dusty period.....
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