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      10-08-2012, 11:51 AM   #1
Blade929
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Question 2-piece OE replacement rotors?

Hey guys,

Does anyone other than Performance Friction make a 2 piece replacement rotor in OE fitment? The PF ones are called Direct Drive Rotors. I spoke with a StopTech rep at Bimmerfest East last year and he led me to believe they would have something however it doesn't look like it. I need to replace mine soon.
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      10-08-2012, 11:58 AM   #2
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We are working with a company on something. We hope to have some news in the next two weeks.
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      10-08-2012, 12:47 PM   #3
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Great thanks! I can wait that long for sure.
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      10-08-2012, 04:57 PM   #4
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Check out Racing Brake(RB) two piece rotors. I have them on my 135i and they are great. Now i am getting them for my M3.
4.5 pounds lighter than stock rotors
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      10-09-2012, 08:48 AM   #5
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I had Coleman Machine (or google up Coleman Racing) make me a custom set for my STi for half the price of PF.

The rings were around $120ish each and they were heat treated and lasted me forever (wear induced replacement vs cracks).

You would need to send them the stock rotors once. They will design it for you and send the new kit. Moving forward, all you have to do is call and they will ship the rings vs sending them the specs again.

They do rotors for NASCAR and Prodrive in the US so rest assured you'll be safe for DD

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      10-15-2012, 08:25 AM   #6
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Thanks guys. Just a little update. This is what I received from my inquiry with Stop Tech. Erik let me know: We have begun development of a variety of 2-piece replacement rotors including those for the E9X M3. We have some projects that are getting priority which are almost complete, after which the M3 parts will be finalized. At this point I see these parts becoming available n the next 6 months or so.
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      11-21-2012, 05:54 PM   #7
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Quote:
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We are working with a company on something. We hope to have some news in the next two weeks.
Update?
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      11-21-2012, 06:02 PM   #8
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one of the best brake technology companies out Performance Friction (PFC) make replacement 2-piece rotors for our cars. That is about as good as it gets.
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      11-21-2012, 07:35 PM   #9
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http://aakmotorsports.com/performanc...ve-rotors.aspx
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      11-21-2012, 10:45 PM   #10
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can anyone report that has used these PFC 2 piece rotors? need new rotors soon and it either these or OEM? i already use PFC brake pads Compound 08
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      11-22-2012, 05:56 AM   #11
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Quote:
Originally Posted by PINHEAD View Post
one of the best brake technology companies out Performance Friction (PFC) make replacement 2-piece rotors for our cars. That is about as good as it gets.
+1 - PFC direct drive rotors are great!

Their v2 design is significantly lighter than their v1 design, which was already a light floating rotor design. I'm running their BBK, however, the direct drive rotor system is identical to the one used on the stock rotor size/design.

A nice advantage is when it's time to replace a rotor you only have to buy a replacement rotor ring (disc only, no mounting hat needed because it's reused)
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      11-22-2012, 12:54 PM   #12
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I had the DD rotors on my E46 330 which had a BBK based on the E46 M3 rotor. Well...those rotors wore out super quick. About 8 days and they were cracked pretty badly. The OEM Euro rotors lasted much longer.

A member here had one crack completely on him.

I love PFC pads...not a fan of the DD rotors though.
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      11-26-2012, 12:37 PM   #13
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Quote:
Originally Posted by Blade929 View Post
Update?
Calipers are ready. Rotors and adapters are supposed to be available the first or second week of December.
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      11-26-2012, 07:13 PM   #14
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Quote:
Originally Posted by bigjae1976 View Post
I had the DD rotors on my E46 330 which had a BBK based on the E46 M3 rotor. Well...those rotors wore out super quick. About 8 days and they were cracked pretty badly. The OEM Euro rotors lasted much longer.

A member here had one crack completely on him.

I love PFC pads...not a fan of the DD rotors though.
Interesting...I've had zero issues with my DD rotors (dimple rotor style). The DD floating design is identical to what PFC uses on professional race cars - the Ganassi DP race car uses them
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      11-26-2012, 07:55 PM   #15
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Quote:
Originally Posted by M3SQRD View Post
Interesting...I've had zero issues with my DD rotors (dimple rotor style). The DD floating design is identical to what PFC uses on professional race cars - the Ganassi DP race car uses them
My personal experience was surprising especially since I was running PFC pads with them. I bed the pads in on the new rotors and went to the track. They heat cracked after the first use and then they grew really quickly. I only got 4 days out of them and some of the cracks were getting alarmingly wide. Compared to the E46 OEM M3 euro rotors where I got 6 weekends out of. I kept going and eeked out 2 more weekends but I had back up rotors with me.

See the thread below. I don't think my rotors were far from looking like that. Now that's 2 of 4 people that I know run these rotors. Maybe bad luck but I'll personally pass on these.

http://www.m3post.com/forums/showthr...=cracked+rotor

Compared to my stoptech rotors with my stoptech kit (about the same size) which I got 16 months of constant track days and street driving out of (and the rings are cheaper).
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      11-26-2012, 08:07 PM   #16
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I'm very interested in a set of 2 piece rotors, so keep us updated on them!
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      11-27-2012, 06:43 PM   #17
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Quote:
Originally Posted by bigjae1976 View Post
My personal experience was surprising especially since I was running PFC pads with them. I bed the pads in on the new rotors and went to the track. They heat cracked after the first use and then they grew really quickly. I only got 4 days out of them and some of the cracks were getting alarmingly wide. Compared to the E46 OEM M3 euro rotors where I got 6 weekends out of. I kept going and eeked out 2 more weekends but I had back up rotors with me.

See the thread below. I don't think my rotors were far from looking like that. Now that's 2 of 4 people that I know run these rotors. Maybe bad luck but I'll personally pass on these.
Wow, that sucks! I know a lot of people that run these on e46 M3s (CR & HPDE) as well as on the F of e9x M3s without issue; however, I can understand why you'd stay away from them.

Were your cracks small stress cracks that formed over most of the rotor surface or a few large cracks? Did they form near the tabs on the ID of the ring?
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      11-27-2012, 11:58 PM   #18
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They started in the middle but quickly grew towards the insides. Then they started looking bigger than your normal hairline cracks.
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      11-29-2012, 11:00 AM   #19
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Quote:
Originally Posted by M3SQRD View Post
Interesting...I've had zero issues with my DD rotors (dimple rotor style). The DD floating design is identical to what PFC uses on professional race cars - the Ganassi DP race car uses them
Its interesting that they chose dimpled rotor design vs slotted.
Most race teams prefer slotted rotors.
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      11-29-2012, 11:14 AM   #20
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Quote:
Originally Posted by Groundpilot View Post
Its interesting that they chose dimpled rotor design vs slotted.
Most race teams prefer slotted rotors.
They offer both types - dimpled or slotted - with their e9x M3 brake kit. However, PFC prefers the use of dimpled rotors on street cars over slotted rotors because the slotted rotors make more noise.
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      12-05-2012, 09:28 PM   #21
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I'm hoping for an update soon!
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      12-08-2012, 11:46 AM   #22
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While Brembo is best known for its racing and race-inspired high performance braking systems, Brembo is also a global supplier of brake rotors and other brake components. Brembo manufactures over 26 million brake rotors annually in over a thousand different designs, including those used by original equipment manufacturers and original equipment suppliers.
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