10-18-2017, 03:53 PM | #1 |
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Larger rotor on m sport brakes 440i
Hello, so i recently bought new rotors but i bought rotors for the 600$ option m sport brakes. I guess i still have the stock brakes. But the front caliper is the same? The only difference is the rear caliper. Could i fit the larger rotor on the front and then just exchange the rear rotors for the a smaller size? The front rotor thats on is 337mm could i fit my 370mm rotor on that caliper without problems?
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10-18-2017, 04:04 PM | #2 | |
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10-18-2017, 04:12 PM | #3 |
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ok! Iv also read that the BBK is purely for aesthetics. Would it be more worthy to just buy dimpled/slotted rotors that are the same size? Iv read there isnt really any performance difference. For performance that would fall into the hands of tires and pads, correct?
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10-19-2017, 10:31 AM | #4 | |
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10-19-2017, 10:41 AM | #5 | |
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slightly better braking distance better brake fade If you are looking for aesthetics why not just paint the calipers and get slotted rotors |
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10-19-2017, 10:48 AM | #6 |
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That's arguable; you're paying more money for less rotor. Dimples and slots wear down pads faster, but the little added performance they offer (if any) is generally defeated by the fact that there's less rotor available that would normally aid in absorbing heat. I'd insist that the opposite is true; blank rotors offer the superior brake fade resistance.
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10-19-2017, 10:51 AM | #7 | |
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As far as fade performance there is somewhere a trade-off between slotted cooling and the larger rotor surface probably depends on application.. street driving will likely not expose this and the surface area taken by the slots is generally not that much |
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10-19-2017, 10:53 AM | #8 |
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10-19-2017, 11:48 AM | #9 | |||
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I'm glad I factory ordered the $650 M Sport Brake Option for my 335i. I now run F8X M3/M4 front and rear pads in it during the summer and it's excellent at the track. |
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10-19-2017, 02:14 PM | #10 | ||
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Flat surface in normal condition are better because more square inches surface to the brakes pad (no dimples, no slots). So both setups have pros and cons. No light without shade.
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335i F31 RWD in SB || Powertrain: Active Autowerke Flash Tune Stage 1 | AA Charge Pipe | AA FMIC | GFB DV+ | xHD Trans-Flash | Quaife LSD | Cyba 3.5" Carbon tips || Chassis: 20" 405M | Wiechers Strut Bar | Rear M-Diffusor || Brakes: 18" M-Perf Brake orange 370/345 | EBC YellowStuff pads all around || Various: LED bulbs: Fog-L. front | Turn Signal f&r | Brake L. | Reverse L. | Rear L. | Rear Fog L.
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10-19-2017, 04:09 PM | #11 | |
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I disagree with your opinion on brake fade, though. I'm not convinced that slots or dimples will prevent the brake pads from overheating better than blanks. A blank rotor has more volume, and can better absorb/dissipate the heat from hard braking. Brake pad materials also produce less off-gassing than pads of the past, so I'm not convinced brake fade would result from the use of blanks vs slotted/dimpled. It should also be mentioned that slotted/dimpled rotors chew through pads faster, and in my experience are more prone to warping and/or cracking. OP, assuming you're going for aesthetics, buy slotted/dimpled rotors. If you prefer function over form, and more money in your pocket, then stick with blanks. |
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10-19-2017, 04:27 PM | #12 | |
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10-19-2017, 05:05 PM | #13 | |
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https://ebcbrakes.com/ebc-news/ebc-p...-sport-rotors/ F3x does dry brake only with rain sensor activated. In the E46 however the wet braking reaction was way better due to the slots. And dimpled rotors should not be cracking, which is a known problem of drilled rotors. I took the F3x new with the M Performance Brakes so I can't compare with the normal rotor.
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335i F31 RWD in SB || Powertrain: Active Autowerke Flash Tune Stage 1 | AA Charge Pipe | AA FMIC | GFB DV+ | xHD Trans-Flash | Quaife LSD | Cyba 3.5" Carbon tips || Chassis: 20" 405M | Wiechers Strut Bar | Rear M-Diffusor || Brakes: 18" M-Perf Brake orange 370/345 | EBC YellowStuff pads all around || Various: LED bulbs: Fog-L. front | Turn Signal f&r | Brake L. | Reverse L. | Rear L. | Rear Fog L.
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10-19-2017, 05:24 PM | #14 | |
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Also remember that as rotors wear, the dimples grow smaller. How often do you find yourself driving in the rain? Under a hard stop, I'd be more concerned with my tires losing traction than the fraction of a second that it takes for the brakes to dry off. |
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10-19-2017, 08:23 PM | #15 |
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Larger rotors w/ brackets that are farther away from the axis of the wheel = larger sweep area per rotation.
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10-20-2017, 01:06 AM | #17 |
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11-02-2017, 12:49 PM | #18 | |
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12-17-2017, 10:15 PM | #19 |
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Similar question. Can someone help me with this?
- I have a 2015 335i XDrive, stock brakes. - My Dad has a 2018 440i XDrive, blue M-SPORT brakes If he puts on an M-Performance kit (for him, primarily for M caliper color and drilled/slot rotors)... Will his 2018 440i M-Sport blue brakes (and rotor swapped also if needed) fit on my 2015 335i?????? |
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12-17-2017, 10:52 PM | #20 |
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For the 2015 year (and 2014 as well I think), 335's had a rotor/sizing change from
Stock=340mm front, 330mm rear, to: Blue M Sport= 375mm front, 345mm rear. I can't seem to find rotor size for 2018 440i stock brakes or M-SPORT brakes, whether they are slightly different or the same. Then what I need to know is if there are any different parts/brackets/mounting needed for the swap, or if I can just plug & play swap the stock 335i calipers for the blue??? (+/- rotors). |
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brakes, f30, f32, msport retrofit, rotors |
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