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      01-10-2010, 09:03 AM   #1
whn
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Exclamation New front/rear brake discs for 335i? Need help!

I want to change my brake discs for something more "race" looking drilled & slotted discs.

What are the best discs available for 335i? and should I also change OEM brake pads for better ones?

btw. when I change the brake discs and pads to something non-oem will that make my brakes sound worse or will the sound be same?
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      01-10-2010, 11:07 AM   #2
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Do a search. There are quite a few threads on this topic.
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      01-10-2010, 12:25 PM   #3
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Tried but didn't find anything helpful
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      01-11-2010, 10:12 AM   #4
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StopTech rotors (drilled and slotted) and Cool Carbon pads.
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      01-11-2010, 10:28 AM   #5
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Quote:
Originally Posted by AlanAZ View Post
StopTech rotors (drilled and slotted) and Cool Carbon pads.
+1000 i had those front and back and were good. you also get the inside of the rotor in black which looks nice compaired to the rusty oem ones.
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      01-11-2010, 12:04 PM   #6
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Whats the best place to pick both those items up?
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      01-11-2010, 12:30 PM   #7
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I like the dba 5000 two-piece rotor, slotted. Drilled may look cool, but if freude am fahren is your motto, stick to slotted.
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      01-11-2010, 01:31 PM   #8
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Quote:
Originally Posted by whn View Post
I want to change my brake discs for something more "race" looking drilled & slotted discs.

What are the best discs available for 335i? and should I also change OEM brake pads for better ones?

btw. when I change the brake discs and pads to something non-oem will that make my brakes sound worse or will the sound be same?
I went with EBC brake discs (Turbo Groove, dimpled + slotted) along with Cool Carbon pads and Goodridge steel lines. I'm quite happy with it, more details in the link in my sig.

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      01-11-2010, 02:00 PM   #9
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Quote:
Whats the best place to pick both those items up
I got the Cool Carbon pads at Bavauto, and **********s carries the StopTech rotors at a good price.

Quote:
when I change the brake discs and pads to something non-oem will that make my brakes sound worse
Slotted rotors will be nosier than plane or just drilled. If non-oem pads are installed correctly, there's no squeal or additional noise.
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      01-11-2010, 02:13 PM   #10
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Quote:
Originally Posted by AlanAZ View Post
I got the Cool Carbon pads at Bavauto, and **********s carries the StopTech rotors at a good price.

Slotted rotors will be nosier than plane or just drilled. If non-oem pads are installed correctly, there's no squeal or additional noise.
So can you hear the braking noise inside the car now when you are using stoptech rotors w/ CC pads?

I want to change my rotors but I dont want to raise the braking noise when comparing to oem so should I first change the oem rotors to Stoptech drilled rotos?
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      01-11-2010, 03:26 PM   #11
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If you find the stoptechs a bit too pricey. We carry the Frenetik premium line of replacement rotors which offer a your custom choice of cross drilling/slotted/dimpled and color finishes as well.

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      01-11-2010, 05:20 PM   #12
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Quote:
Originally Posted by whn View Post
So can you hear the braking noise inside the car now when you are using stoptech rotors w/ CC pads?

I want to change my rotors but I dont want to raise the braking noise when comparing to oem so should I first change the oem rotors to Stoptech drilled rotos?
I know the question wasn't addressed to me, but I think I can give you an answer nevertheless: As written above, slotted rotors will always be noisier than the OEM ones as the latter have a level surface. If you're not going fast, you can hear an increased braking noise as the pads build up friction against the rotor. It's not annoying or loud or anything, just noticeable. If you don't want any noise at all, stay stock.

BTW and just to avoid confusion, I'm not talking about any squealing or something similar. When the CC pads are installed correctly, there shouldn't be any such squealing at all. I have them on for some thousands of km now, and even in extreme cold (-15 degrees Celsius) there was no squeal.

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      01-11-2010, 09:13 PM   #13
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Quote:
So can you hear the braking noise inside the car now when you are using stoptech rotors w/ CC pads?
The slots are more abrasive against the pads - helps keep the pad material fresh - but does contribute more brake noise. Honestly, you'll notice the difference when you make the change, but after a few thousand miles you won't notice it any more, but you'll not want to live with the way the brakes were before. Before the brakes are initally grabby, then not much until you lean on them. After the change, the brakes are beautifully linear, and seem to go on for ever with not that much effort. The factory brake feel is disappointing to me, and I upgraded the rotors and pads on both my E46 (Zimmerman drilled/Pagid street) and E90, and both times had excellent feel and braking.

Quote:
I want to change my rotors but I dont want to raise the braking noise when comparing to oem so should I first change the oem rotors to Stoptech drilled rotos
Increased noise is a function of the slotted rotors, not the pads. If you want Quiet, than plain or just drilled rotors with Cool Carbon pads is the way to go.

Last edited by AlanAZ; 01-11-2010 at 09:37 PM.
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      01-12-2010, 01:39 AM   #14
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where I can buy stoptech drilled rotors? I found only BBK's
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      01-12-2010, 10:03 AM   #15
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Check with harold@hpautowerks. Ask him about Stoptech's new pad compound
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      01-13-2010, 02:32 PM   #16
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zzz.. anyone?
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      01-15-2010, 04:29 PM   #17
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Quote:
where I can buy stoptech drilled rotors? I found only BBK's
whn meet browser; browser whn

http://www.pzmotorsports.com/Store/P...55257&Make=BMW

This is the first I found, probably others at better prices.
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      03-30-2012, 11:47 AM   #18
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I know this is an old thread, but still pertinent. Is anyone still using the Stoptech rotors? How have they held up? Are they made in China like a lot of the aftermarket rotors? Any problems with warpage?
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      04-02-2012, 12:59 PM   #19
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Ive been researching the same thing lately and stop tech seems to be whatever one is saying. If i find anything different ill let you know but about 80% led that way, forum wise.
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      04-02-2012, 04:01 PM   #20
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I have very good luck with R1concepts in 550. Not sure if they make rotors for e90
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      07-11-2014, 08:11 AM   #21
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Quote:
Originally Posted by Likwid View Post
I know this is an old thread, but still pertinent. Is anyone still using the Stoptech rotors? How have they held up? Are they made in China like a lot of the aftermarket rotors? Any problems with warpage?
I am using them currently. Just installed them 2 months ago. They work great and look great too. I didn't buy CC pads at first and went with some pads from ebay and they squeeeeled like shit. After switching to better pads i hear no noise and the stopping power i sclearly better than stock
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