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03-21-2013, 06:40 PM | #1 |
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Performance Friction Direct Drive Rotors 2-piece Rotors
Description
The Performance Friction Direct Drive Rotor is a direct 2-piece rotor replacement for the E82 BMW 1M. They are designed to be used with the factory caliper, with no other parts or modifications necessary. Kit includes everything needed (rotor, hat and hardware) for a single rotor replacement. Priced per rotor. PFC Pads suggested - check pad-clearance before using with any other manufacturer pads. 2-piece rotors offer better cooling over a one-piece design. Performance Friction's full floating Direct Drive attachment system allows the brake disc to naturally expand/contract on both radially and axially without being constrained by the hub. This helps eliminate rotor warping, vibrations and pulsations. Due to the high quality of Performance Friction's design and manufacturing, the Direct Drive rotors are completely silent and rattle-free - a trait typically found in many competitor's 2-piece designs. The hat assembly is completely reusable - no need to buy the entire rotor again! And, because the rotor is designed for use with the factory caliper, you can still use your favorite Performance Friction brake pads! Technical Information - High Carbon Alloy with copper and molybdenum for high temperature strength and durability. - Vanes turned OD and ID for balance to reduce thermal warping and vibration. - Runout less than .001 inches, reducing Pulsation and Vibration. - Thickness variation less than .0003 inches reduces Pulsation and Vibration. - 47 or more vanes for superior thermal capacity. - Aircraft quality heat treated for micro structure alignment and durability. - Surface finish less than .7 microns. - 100% measured and inspected to meet tolerance specifications. - 4.2 pounds lighter than OE rotor For more information: http://www.m3post.com/forums/showthr...5#post13681965 Last edited by HP Autosport; 03-21-2013 at 06:49 PM.. |
03-21-2013, 06:53 PM | #2 |
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PFC DD rotors are awesome! I'm running PFC's BBK which uses their 372/371 mm DD rotors with Z31 4-piston calipers (larger front pistons, four pads/caliper). The dimples are great for the street (quiet) and awesome on the track!
This is a great upgrade to the stock braking system because of the DD floating rotor system, especially when coupled to PFC street (z-rated) or track pads (I've used 01, 03 and 05 pad compounds). Nice addition |
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08-08-2013, 12:25 PM | #3 | |
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08-12-2013, 06:15 AM | #4 |
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Have you seen PFC's new V3 mounting system? No fasteners are used to hold the ring in place! It looks like they've only released the V3 DD rotors to Porshce Factory Motorsport teams - PFC is their official brake tech partner! They've also developed a beautiful caliper for the new GT3 (991). They've also changed their logo and on the M3 brake kits the logo is machined into the caliper rather than using a decal after powdercoating! There's a green Z31 caliper on their FaceBook page
I hope at some point PFC releases the new V3 DD rotors for their M3 brake kit |
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08-12-2013, 02:38 PM | #5 | |
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08-13-2013, 09:01 AM | #6 |
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Really interested in real life feedback on track with these rotors. The stock cross drilled is the culprit for increased wear on track. I go through a set of Pagid Yellows and PFC 08s in one weekend (or 3 days MAX). Not good!
Hoping these rotors will solve the issue of cheese grating the pads in conjunction to better vane design for cooling. Awaiting update. Thanks, Lutfy |
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08-13-2013, 12:39 PM | #7 | |
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Maybe I'm easy on my brakes - or I'm slow.
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08-13-2013, 07:49 PM | #8 | |
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08-14-2013, 01:44 AM | #9 | |
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With better cooling of these DD rotors your pads will likely to stay within their temperature range, thus longer wear and more consistent braking. |
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08-14-2013, 07:27 AM | #10 | |
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Based on my own experience with PFC DD rotors I'd say the PFC stock-sized DD rotor would out perform the OEM F rotor - a big difference is the PFC rotor is a true floating rotor whereas the OEM rotor has a steel pin in an aluminum hub and steel rotor. For the OEM rotor to slide it must over come friction on the pin and any initial load due to interference fit of the pin. Also, the coefficient of thermal expansion of Alum is > 2 times the CTE of steel so the pin friction in the Alum hub will increase as the temperature increases - this means only the Steel pin-rotor is the only side that may "float" when it over comes pin friction... |
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08-20-2013, 12:41 AM | #13 |
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01-16-2014, 06:37 PM | #15 |
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01-16-2014, 07:17 PM | #16 | |
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Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."
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03-03-2014, 07:11 AM | #17 |
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03-04-2014, 10:55 AM | #18 |
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Anyone can provide real life feedback on track with these rotors?
I am a little hesitant to pull the trigger on these rotors after reading a few negative reviews on this forum. One had them completely cracked, two others had balancing issues. |
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03-04-2014, 07:33 PM | #19 |
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Just installed my set this past weekend for Road Atlanta this coming weekend. Will report back. New discs with Pagid rs-19s front and rear (my favorite pad) and I have brake cooling ducts (I'm able to get fade with this set up on stock rotors).
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03-04-2014, 09:21 PM | #20 | |
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Otherwise, they should in theory work better than the OEM disc in terms of cooling. If you do get a set, just make sure that the mechanic measures runout, which should be standard practice for brake disc installation. |
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03-05-2014, 08:24 AM | #21 |
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Sounds great. Looking forward to your feedback after this coming track weekend
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03-05-2014, 08:27 AM | #22 | |
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