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      05-04-2015, 10:11 AM   #1
What_A_D
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new rotors/pads

Hi all,

My rotors and pads will need to be replaced soon and I was wondering what everybody else was going with.

Here is one option that I was leaning towards:

http://www.jcwhitney.com/p3089496/sk...18998y2011g2j7
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      05-04-2015, 10:20 AM   #2
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I did my fronts last month. Centric rotors w/ Akebono pads. The initial bite doesn't feel as aggressive as OEM pads but much less brake dust.
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      05-04-2015, 11:12 AM   #3
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I highly suggest not getting drilled rotors, especially not low cost ones. You definitely don't need them, and they will just end up cracking like all cheap drilled rotors do
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      05-04-2015, 11:37 AM   #4
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I was extremely satisfied with the OEM replacement Brembo rotors I've put on in the past. Yes, they were not drilled or slotted, but performed flawlessly.

PL
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      05-04-2015, 11:38 AM   #5
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Quote:
Originally Posted by chau View Post
I did my fronts last month. Centric rotors w/ Akebono pads. The initial bite doesn't feel as aggressive as OEM pads but much less brake dust.
You know, I don't get it with this brake dust business. Many posters talk about too much brake dust with their OEM pads (I think). I am at 43k, am on the first set of pads with plenty of pad left, and experience little to no brake dust. I must admit that I am the type of driver that actually doesn't use the brakes all that much because of the way I drive, but even when I go to the track and use the brakes a lot and hard I don't see that much brake dust.

What gives?
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      05-04-2015, 11:38 AM   #6
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Quote:
Originally Posted by Hoooper View Post
I highly suggest not getting drilled rotors, especially not low cost ones. You definitely don't need them, and they will just end up cracking like all cheap drilled rotors do
+1. Stick with blank rotors.

Quote:
Originally Posted by 335dFan View Post
You know, I don't get it with this brake dust business. Many posters talk about too much brake dust with their OEM pads (I think). I am at 43k, am on the first set of pads with plenty of pad left, and experience little to no brake dust. I must admit that I am the type of driver that actually doesn't use the brakes all that much because of the way I drive, but even when I go to the track and use the brakes a lot and hard I don't see that much brake dust.

What gives?
I think it may be the material being used for the pads. On an e70 X5 that my family use to own, the fronts easily covered the wheels in a nice black layer one day after washing the car.
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      05-04-2015, 12:17 PM   #7
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Quote:
Originally Posted by 335dFan View Post
You know, I don't get it with this brake dust business. Many posters talk about too much brake dust with their OEM pads (I think). I am at 43k, am on the first set of pads with plenty of pad left, and experience little to no brake dust. I must admit that I am the type of driver that actually doesn't use the brakes all that much because of the way I drive, but even when I go to the track and use the brakes a lot and hard I don't see that much brake dust.

What gives?
I think this depends a lot on the driver. My stock rear pads wore down only 1 mm over 50k miles. I noticed a little dust but not very much. If I was the type of driver that used up the entire pad in that many miles I would probably think the pads were pretty heavy dusting.
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      05-04-2015, 12:43 PM   #8
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Quote:
Originally Posted by Hoooper
I highly suggest not getting drilled rotors, especially not low cost ones. You definitely don't need them, and they will just end up cracking like all cheap drilled rotors do
Yeah you're right, I originally just wanted them because I like the way they look but I will prolly just go with the brembos :
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      05-04-2015, 01:52 PM   #9
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Quote:
Originally Posted by 335dFan View Post
You know, I don't get it with this brake dust business. Many posters talk about too much brake dust with their OEM pads (I think). I am at 43k, am on the first set of pads with plenty of pad left, and experience little to no brake dust. I must admit that I am the type of driver that actually doesn't use the brakes all that much because of the way I drive, but even when I go to the track and use the brakes a lot and hard I don't see that much brake dust.

What gives?
BMW did change the formulation of the brake pad around September 2009 for the 335d. I think that all model year 2010 and after got the new formulation. Old formulation was very bad for dust.
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      05-04-2015, 08:02 PM   #10
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These guys have good prices

http://www.partsgeek.com/catalog/201...ake_rotor.html

http://www.partsgeek.com/catalog/201...e_pad_set.html
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      05-04-2015, 09:24 PM   #11
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Speaking of rotors

I noticed something unusual today after my 2 hour drive into the Oregon countryside. My RR, LR, and LF rotors have a coating of rust. Understandable since it's wet here and I don't drive the car much. But the right front rotor is nice and shiny. What could cause the difference? No obvious symptoms in braking that I can recall, although I haven't had to stand on the brakes recently. Depending somewhat on the opinions I get from my forum buds, I may ask the local SA the same question.
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      05-05-2015, 01:31 AM   #12
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Quote:
Originally Posted by 335dFan View Post
I noticed something unusual today after my 2 hour drive into the Oregon countryside. My RR, LR, and LF rotors have a coating of rust. Understandable since it's wet here and I don't drive the car much. But the right front rotor is nice and shiny. What could cause the difference? No obvious symptoms in braking that I can recall, although I haven't had to stand on the brakes recently. Depending somewhat on the opinions I get from my forum buds, I may ask the local SA the same question.
Modern disc brake systems use the pads to remove water from the rotors to improve wet braking usually by having them rub a little. Perhaps there is an uneven application of such a mechanism. You may need to have the brakes checked for uneven wear, as many cars also use the brakes for their sway control via the antilock circuit, and even for the all-wheel-drive mechanisms.

PL
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      05-05-2015, 06:46 AM   #13
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Quote:
Originally Posted by 335dFan
I noticed something unusual today after my 2 hour drive into the Oregon countryside. My RR, LR, and LF rotors have a coating of rust. Understandable since it's wet here and I don't drive the car much. But the right front rotor is nice and shiny. What could cause the difference? No obvious symptoms in braking that I can recall, although I haven't had to stand on the brakes recently. Depending somewhat on the opinions I get from my forum buds, I may ask the local SA the same question.
The OE supplier, zimmerman makes boath coatwd and non-coated. Perhaps somehow you got one coated?
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      05-05-2015, 08:40 AM   #14
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Stoptech cross drilled rotors w Hawks HPS with OEM calipers work for me
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      05-05-2015, 08:59 AM   #15
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Quote:
Originally Posted by 335dFan View Post
I noticed something unusual today after my 2 hour drive into the Oregon countryside. My RR, LR, and LF rotors have a coating of rust. Understandable since it's wet here and I don't drive the car much. But the right front rotor is nice and shiny. What could cause the difference? No obvious symptoms in braking that I can recall, although I haven't had to stand on the brakes recently. Depending somewhat on the opinions I get from my forum buds, I may ask the local SA the same question.
Probably just a difference in environmental exposure. Even if the brakes were working uneven that wouldn't explain the difference since you still have exposed bare metal. There was probably some difference in wind pattern carrying fog directly onto those 3 rotors. I wouldn't worry about it unless you notice the braking is unusual.

Quote:
Originally Posted by taibanl View Post
The OE supplier, zimmerman makes boath coatwd and non-coated. Perhaps somehow you got one coated?
The coating is just a surface coating, once you use the brakes a couple times it wears off the pad contact area and you will start getting rust in that area after the car sits. The coating is to keep the rest of the disc from rusting.
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      05-05-2015, 10:20 AM   #16
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Not to turn this into a debate, but I have coated Zimmerman rotors that are drilled and slotted with no adverse affects. My Porsche had drilled rotors from the factory.

It may pose a problem for a track day but they seem to hold up fine for street use.
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      05-05-2015, 10:40 AM   #17
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Quote:
Originally Posted by 9mmkungfu View Post
Not to turn this into a debate, but I have coated Zimmerman rotors that are drilled and slotted with no adverse affects. My Porsche had drilled rotors from the factory.

It may pose a problem for a track day but they seem to hold up fine for street use.
Zimmerman are also high quality rotors. You can get away with drilled rotors if you buy from a company that does it right, but the cheap ones dont do it right and they quickly crack. Even the high quality ones are of course more likely to crack than blanks are, but they are a lot more likely to last for a long time than cheap ones. I have no issue with buying drilled rotors, even cheap ones, as long as the buyer goes in knowing they are doing it only for looks and that they are more likely to need to be replaced early.
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      05-05-2015, 11:44 AM   #18
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I'm going to go zimmerman blank rotors with hawk ceramics (no dust)
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      05-05-2015, 02:28 PM   #19
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Just an FYI to anyone who was considering using Brembo pads: I picked up a set of them to try out and they are more dusty than the factory pads if that bothers anyone. I'm also noticing slightly more noise as well.
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      05-05-2015, 03:49 PM   #20
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I work in the auto aftermarket industry and here are my personal recommendations, also, what I use on my car.

Centric/Stoptech 125 series high carbon rotors F/R

For pads, I would go one of 2 ways.

More OEM: Centric Posi-Quiet semi Metallic pads: 104 series
More aggressive: Stoptech street performance pads: 309 series

Centric also makes a OE formula pad.

In regards to cross drilled/slotted, its a waste of money. 99.9999% of you with a 335D will never get your brakes to an operating temperature near where that would become useful. Cross drilled are such a waste and so prone to cracking. Even slotted are overkill, the built in cooling on vented rotors is more than enough.

But who am I, just another dude on the forum.
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      05-05-2015, 05:18 PM   #21
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Quote:
Originally Posted by NickTheStick View Post
99.9999% of you with a 335D will never get your brakes to an operating temperature near where that would become useful.
In my limited track experience, which consists of eight 15-20 minute sessions at a couple of the Summit Point circuits, our stock brakes are just fine. Toward the end of a couple of the sessions you could kinda feel the pedal getting a little mushy at the end of a straight, for lack of a better word. But I never felt they were going to not stop me. All I have is stainless steel brake lines and better fluid. However, this is just one amateur's observation.
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      05-06-2015, 02:44 PM   #22
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My new front rotors and pads just arrived. I went with the rotors from the Z4 35is and Hawk HP+ pads.

"From the Z4 35is, these rotors are an upgrade for 335 & xDrive35i models, offering a rust-free aluminum hat and weight savings of 2lbs each!" 2 piece construction

I'm a little disappointed with the customer service at ECS. The shipment took extra time and when I inquired about it I never got a human response back. No big deal, but other companies that I've ordered from seem to have taken better care to render customer service.

My car is out getting wheels refinished and a new powder coating. I'll report back on the brakes after I get the wrenching done in the next couple days. I'm particularly excited for the pad performance.
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