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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > ECS Cross Drilled and Slotted rotors



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      11-16-2017, 05:20 PM   #1
dannyjones
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ECS Cross Drilled and Slotted rotors

Hi,

Does anyone have the ECS Tuning own brand cross drilled and slotted rotors?
What do you think of them, and could you provide photos?

I'm considering them as my original rotors are completely rusted. I want drilled/slotted for the look more than anything. I have read several threads where people say it doesn't help performance and will just wear out your pads quicker, but that doesn't bother me.

https://www.ecstuning.com/b-ecs-part...64655xsgmtlra/
https://www.ecstuning.com/b-ecs-part...70729xsgmtlra/

Thanks
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      11-17-2017, 08:14 AM   #2
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I have them on my front brakes but with less than 10,000km on them and just normal street driving (not even aggressive), they are warped already. I can feel vibration through the steering wheel when braking from highway speed (no, it’s not my control arm bushings). Beyond that, I didn’t notice any more noise when braking compared to stock solid blank discs.
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      11-17-2017, 10:27 AM   #3
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Quote:
Originally Posted by cpie168 View Post
I have them on my front brakes but with less than 10,000km on them and just normal street driving (not even aggressive), they are warped already. I can feel vibration through the steering wheel when braking from highway speed (no, it’s not my control arm bushings). Beyond that, I didn’t notice any more noise when braking compared to stock solid blank discs.
What pads?
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      11-17-2017, 10:31 AM   #4
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They are not that good. I heard from few people that they warpe really fast.
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      11-17-2017, 11:57 AM   #5
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Quote:
Originally Posted by FCobra94 View Post
What pads?
Cool Carbon
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      11-17-2017, 11:58 AM   #6
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Quote:
Originally Posted by Roma_335i View Post
They are not that good. I heard from few people that they warpe really fast.
While we're on the subject, what brake discs are the most resistant to warping while being reasonably priced?
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      11-17-2017, 12:11 PM   #7
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Quote:
Originally Posted by cpie168 View Post
Cool Carbon
That is your problem.. Rotors are not warped, pads have left deposits on the rotors.

Sorry, but it drives me nuts every time I hear warped rotors. Gone are the days of non vented rotors that could not deal with heat cycles and warped. Mechanics use "warped rotors" to make money. Newer pads leave deposits (especially carbon pads) that cause the pads to skip across high spots causing pulsation under braking..

Back to the original question. The ecs rotors are an improvement over the stockers in the looks department but the reduce the contact area of the pad with the cross drilling and slotting. It might only be slight but they will reduce your brake efficiency over stock rotors. Normal street driving, they will be fine.
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      11-17-2017, 12:56 PM   #8
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Quote:
Originally Posted by david in germany View Post
That is your problem.. Rotors are not warped, pads have left deposits on the rotors.

Sorry, but it drives me nuts every time I hear warped rotors. Gone are the days of non vented rotors that could not deal with heat cycles and warped. Mechanics use "warped rotors" to make money. Newer pads leave deposits (especially carbon pads) that cause the pads to skip across high spots causing pulsation under braking..
This, all day.
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      11-17-2017, 02:29 PM   #9
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Thanks David, I appreciate your advice.

Should I use ceramic brake pads instead like Akebono? Would that solve the deposits issue?

And with the current deposits that I got, what can I do to solve the problem? Sand the disc face with sand paper? Is there anything I can do to keep it from coming back?

Thanks again Dave.


Quote:
Originally Posted by david in germany View Post
That is your problem.. Rotors are not warped, pads have left deposits on the rotors.

Sorry, but it drives me nuts every time I hear warped rotors. Gone are the days of non vented rotors that could not deal with heat cycles and warped. Mechanics use "warped rotors" to make money. Newer pads leave deposits (especially carbon pads) that cause the pads to skip across high spots causing pulsation under braking..

Back to the original question. The ecs rotors are an improvement over the stockers in the looks department but the reduce the contact area of the pad with the cross drilling and slotting. It might only be slight but they will reduce your brake efficiency over stock rotors. Normal street driving, they will be fine.
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      11-17-2017, 02:35 PM   #10
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The only pads I have had that have not given me any problems so far are oem pads. For the rotors I think most places will not turn (resurface) slotted or drilled rotors so if you really want to save them you could try sanding the deposits off. If you are too aggressive you will destroy them. Maybe you could get a shop to knock down just the high spots.
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      11-17-2017, 02:41 PM   #11
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Thanks Dave. I don't like the OEM pads because of the amount of dust they create. I was hoping you would say ceramic pads because those are low dust. Anyone else have experience with the ceramic pads?
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      11-17-2017, 02:46 PM   #12
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Quote:
Originally Posted by cpie168 View Post
Thanks Dave. I don't like the OEM pads because of the amount of dust they create. I was hoping you would say ceramic pads because those are low dust. Anyone else have experience with the ceramic pads?
I understand the dusting issues but I will take function over beauty any day. Not sure if ebc makes red stuff pads for our cars but the did well on my tuned Mini.

Just checked, not available. The red stuff are ceramic so maybe you can get lucky with ceramic.
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      11-17-2017, 02:48 PM   #13
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Thanks Dave. Will try Akebono on the front next time. I'm already using them for the rear and they dust so much less.
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      11-18-2017, 06:09 AM   #14
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Thanks all for the advice. I currently have oem pads on the front and akebono ceramic on the rear, so would I not suffer from this deposit issue? Is the consensus then that they don’t warp and you just need to be careful with the type of pad?
Is there a better rotor for similar or slightly more $ without spending a fortune?

Also, anyone got photos of them installed?
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      11-18-2017, 07:37 AM   #15
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Here's mine:
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      11-19-2017, 07:51 AM   #16
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Quote:
Originally Posted by cpie168 View Post
Here's mine:
Thanks, they look good!
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      11-19-2017, 12:32 PM   #17
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Thanks. They do look great for the price. Gives the brakes an aggressive feel.
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      11-20-2017, 11:09 AM   #18
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I run Akebonos with our slotted rotors on my daily driver, braking performance is great the low dust nature of the pads is amazing. Keep in mind the coating will cut off the contact areas of the rotors allowing the braking surface to rust if the car sits for an extended period of time.
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      11-20-2017, 11:14 AM   #19
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I have akebonos with the slotted rotors as well. They've been fine so far for me and absolutely no dust thanks to those akebono pads.
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      11-20-2017, 11:16 AM   #20
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ECS and Camman, have you noticed any steering wheel vibration when braking at highway speed due to pad deposit from your Akebono pads?
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      11-20-2017, 01:06 PM   #21
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Quote:
Originally Posted by cpie168 View Post
ECS and Camman, have you noticed any steering wheel vibration when braking at highway speed due to pad deposit from your Akebono pads?
I have not. Braking has been smooth since installation.
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      11-21-2017, 03:48 AM   #22
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Quote:
Originally Posted by david in germany View Post
I understand the dusting issues but I will take function over beauty any day. Not sure if ebc makes red stuff pads for our cars but the did well on my tuned Mini.

Just checked, not available. The red stuff are ceramic so maybe you can get lucky with ceramic.
I have the EBC red stuff on my 335i.

For the street they're great and handle a reasonable level of spirited driving. Just don't take them on the track, they don't last long there - I tried.
I think a 335i needs some proper performance pads on a track.

Akebono are similar I believe. Good for the street but don't treat them like performance pads.
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