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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > Suspension | Chassis | Brakes > Slotted Rotors for 370/345 Brakes
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      01-04-2019, 07:27 PM   #23
r1concepts
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Quote:
Originally Posted by Vulpe View Post
Their post in the vendor section does have this part in it, unless they came up with something recently.
Looks like we do have the aluminum hat rotors available now! Going to take picture to show you how they look like and I'll update the thread with prices next week.
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      01-04-2019, 07:38 PM   #24
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I think we need to start being specific as to what 2 piece we are talking about. I'm not sure if I'm completely correct on this so correct me if I'm wrong.

The OEM rotors are 2-piece but the rotors are riveted to the aluminum hat. Then there are the semi/floating rotors that are bolted to the hat like what ECS offers.

I got a set of Brembo 2-piece dimpled and slotted (09.C394.13, 09.C395.13)that replaces the OEM M Performance Brake rotors (34106797603, 34206797600)

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Originally Posted by r1concepts View Post
Looks like we do have the aluminum hat rotors available now! Going to take picture to show you how they look like and I'll update the thread with prices next week.
Great! It was difficult (for me at least) to find a set of 2-piece all around for the 370/345 rotors. Hopefully people will take advantage of it.
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      01-06-2019, 03:31 PM   #25
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Yeah I don't mind if they re riveted or not honestly. Just the weight savings of not having a full cast rotor. If they are that cost-prohibitive, I'll just get OEM riveted blanks.
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As long as 3-pedals are an option, I will exercise my right to suffer the handicap and indignity of slower shifts and reaction times.
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      01-07-2019, 08:45 AM   #26
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What's your aversion to having dimples on the rotors?
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      01-08-2019, 01:52 PM   #27
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Below are pictures of our aluminum riveted hat rotors (370mm) that are now available. Pricing will be updated in our thread by the end of the week.





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      01-09-2019, 06:19 AM   #28
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Quote:
Originally Posted by Logicoeur View Post
What's your aversion to having dimples on the rotors?
looks and performance
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Originally Posted by umizoomi View Post
As long as 3-pedals are an option, I will exercise my right to suffer the handicap and indignity of slower shifts and reaction times.
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      01-09-2019, 10:42 PM   #29
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Quote:
Originally Posted by Logicoeur View Post
There was a thread I found several weeks ago in my search for the same (going to go BBK). Someone tried to have real 2piece floating rotors manufactured for our cars and it would be too expensive to make a true floating 2 piece rotor.
I got a quote from Brypar to make a full floating motorsport assembly 2 piece discs.
Was around AUD$2k for the front pair.
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      01-10-2019, 10:31 AM   #30
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Nice thread. Subscribed. My rotors are coming up for replacement.
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      01-15-2019, 09:56 PM   #31
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Quote:
Originally Posted by FaRKle! View Post
My StopTech ARKs (slotted version) were a hair over $700 shipped from TH Motorsports. They send out coupons regularly if you leave things in your cart and don't check out.
do you have a link to a price? ive looked on the website and cant find that price unless yours were purchased more than a year ago
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      01-15-2019, 11:58 PM   #32
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Quote:
Originally Posted by thug108 View Post
do you have a link to a price? ive looked on the website and cant find that price unless yours were purchased more than a year ago
I ordered mine 3/18. TH has probably changed their pricing since then. Still I'd monitor it if I were you and wait for a good price.
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      01-16-2019, 05:36 PM   #33
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Quote:
Originally Posted by FaRKle! View Post
I ordered mine 3/18. TH has probably changed their pricing since then. Still I'd monitor it if I were you and wait for a good price.
thanks will do. best price ive currently found for the zinc coated is at https://www.ajusa.com/ TH comes in second if anyone else is looking to purchase
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      01-18-2019, 01:01 PM   #34
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Updated***
I swapped out my R1 concept rotorsand pads for both front and rear with stoptech because of the squeaking noise in the cold. I noticed that the rotors were a bit rusty where the dimples were too.
Very pleased with Stoptech so far.
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      01-18-2019, 01:54 PM   #35
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Dang. And this is your first winter with them, right? Sure it wasn't the pads? I'd probably run some hawk ceramics with the r1 slotted rotors when it comes down to it. I know high performance pads squeal some but for a daily driver i'd be more concerned with reducing dust.
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As long as 3-pedals are an option, I will exercise my right to suffer the handicap and indignity of slower shifts and reaction times.
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      01-18-2019, 02:42 PM   #36
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Quote:
Originally Posted by kern417 View Post
Dang. And this is your first winter with them, right? Sure it wasn't the pads? I'd probably run some hawk ceramics with the r1 slotted rotors when it comes down to it. I know high performance pads squeal some but for a daily driver i'd be more concerned with reducing dust.
It's actually my second winter here. I didn't have rusty issue last winter but it turned out pretty bad this season. You might wanna check out EBC red stuff for low dust pads. I heard some good reviews about them from ppl with other cars too not only with BMWs
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      01-19-2019, 03:24 PM   #37
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Quote:
Originally Posted by alexng72 View Post
It's actually my second winter here. I didn't have rusty issue last winter but it turned out pretty bad this season. You might wanna check out EBC red stuff for low dust pads. I heard some good reviews about them from ppl with other cars too not only with BMWs
Ah gotcha. I may still give em a shot considering i don't drive much in winter. I've had EBCs in the past but I got hooked on hawks after trying them, and their easier to find/cheaper in my experience.
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As long as 3-pedals are an option, I will exercise my right to suffer the handicap and indignity of slower shifts and reaction times.
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      01-19-2019, 04:50 PM   #38
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Quote:
Originally Posted by kern417 View Post
Quote:
Originally Posted by alexng72 View Post
It's actually my second winter here. I didn't have rusty issue last winter but it turned out pretty bad this season. You might wanna check out EBC red stuff for low dust pads. I heard some good reviews about them from ppl with other cars too not only with BMWs
Ah gotcha. I may still give em a shot considering i don't drive much in winter. I've had EBCs in the past but I got hooked on hawks after trying them, and their easier to find/cheaper in my experience.
Sounds good. Let me know how you feel about Hawks
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      01-20-2019, 07:29 AM   #39
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Hey guys - something you may want to consider here is not just the weight between the two style of rotors. If you guys are using the Brembo calipers then they're "fixed". They don't slide/adjust/float like the typical Bosch units with the separate caliper and "carrier" with slide pins. So, the idea behind the two piece rotor is to also allow for it to adjust and move since the caliper is rigid mounted to the spindle. A totally cast single piece rotor will not allow for this.
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