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06-28-2014, 05:38 PM | #1 |
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Make brake feel tighter?
Hi guys,
I was wondering if there is a way to make our brake pedal feel tighter? I do drive rental cars sometimes and always amazed by the the brake feel, very tight, not much pedal travel vs when I get in the M3. Is it just because everything is newer or does it have nothing to do with it? Would brake fluid flush and new brake pads help a lot? Went to drive the new M4 this morning, and man, those brakes feel nice! Thank you |
06-28-2014, 06:51 PM | #2 |
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When was the last time the brake fluid was flushed on your car? How do your pads and rotors look?
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06-28-2014, 06:52 PM | #3 | |
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06-28-2014, 07:33 PM | #4 |
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I'm thinking stainless steel brake lines though I have no personal experience
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06-28-2014, 09:23 PM | #7 |
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06-28-2014, 09:48 PM | #8 |
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maybe try upgrading to stoptech streetperformance or Ferodo DS2500 pads then? The x millimeter deadzone will likly always be there but initial bite and resistance will nodoubt improve over stock pads. Also just fyi, if you don't track, I don't think changing to a high boiling point brake fluid will make any difference.
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06-28-2014, 09:51 PM | #9 | |
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06-28-2014, 10:12 PM | #10 |
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06-28-2014, 10:39 PM | #11 |
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Switching to a big brake kit (or swapping all the OEM components with more performance oriented ones) may change the braking nature. The Brembo BBK I ran on my 350Z made the braking linear and correlational to pedal travel. Much more predictable and preferable as far as I'm concerned.
I couldn't tell you what part of the BBK changed the nature of the car's braking ability, though. I was on Brembo's standard pad that goes with the kit, slotted rotors and stainless lines along with motul 600 fluid.
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06-29-2014, 02:18 AM | #12 |
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I got the same problem with brake feel. Went to a BBK with APracing, brake feel was tighter, with race pads it was much more grippy even on a cold bite (street driving). Then I removed the kit, sold it and soon will go to the new AP BBK. But in the mean time I have new OEM rotors (front/back) new HPS pads, steel braded lines on all four, running Motul 600 fluid and bleed the brakes myself with a brake bleeder pressure bottle. No bubbles and now my brake pedal has at least about an inch of travel before I get good braking feel out of it. If I slam the brakes, they grib and ABS will kick in. But they just don't feel as sensitive as before, even before the BBK went on 3 years ago.
Should I just re-bleed the entire system again?? |
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07-02-2014, 09:13 PM | #13 |
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My daily driver, a Kia Soreanto has a better brake feel in the pedal than my 2011 M3.The reason for this is lack of being able to adjust the brakepedal free play in the M3.When you first apply pressure to the pedal, and its just moving the pedal, not compressing the brake fluid.So I can't really tell when the pads are grabbing.
By contrast, the Kia's brake pedal is hard as a rock.When I press it, pressure is applied immediately. I was able to achieve this by making the rod between the master cylinder, and brake pedal longer.So there is no wasted motion, in the pedal.To me this makes all the difference in the world. Philip 2011 M3 |
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07-07-2014, 09:08 PM | #15 |
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I didn't find an adjustment or I would have made one.I am going to take the car by a M3 specialist, and see if he knows something I don't.Will post what I find out here. Philip
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08-08-2014, 11:56 PM | #16 |
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i tink its psychological but i feel the same way....actually it deosn't feel as sensitive with my track pads on vs the oem brake pads....my track pads have about 10mm left and i just did a bleed, but it was damn near a flush with hoe much fluid i used....got some bubbles out from the rear right side, kept flushing around the car as usually and no bubbles, just clean brake fluid.
pedal does feel soft but it is consistent. nothing like first pump is soft and second pump tightens up (master cylinder issue-ish)....going to the track tomorrow....will prob swap to thicker trakc pads and see how it feels...on the street car feels fine. guess i just have to stnad on the brakes tomorrow i will ban myself if i bust a perplederple. |
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08-09-2014, 01:03 PM | #18 |
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08-22-2014, 11:48 PM | #19 |
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Had the same issue on my e46 M3. Lucky the solution is cheap. Just get stainless steel brake lines. May as well upgrade the fluid too while you're at it. Good to go.
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08-23-2014, 12:14 AM | #20 |
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08-23-2014, 12:21 AM | #21 |
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hey man. what brake fluid are you using? the track days will accelerate the wear of the brake fluid, especially if you ever get it too hot. bleeding the brakes could be a partial fix.
you have any track days planned?
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08-28-2014, 05:09 PM | #22 |
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On a related note, INPA has a brake/dsc valve calibration menu in the DSC module.
I ran all of the of the calibrations on the left hand side of the screen. I didn't do anything on the right side of the screen, ie. prebleed. Anyway, the end result was a firmer pedal, more rear brake bias, and a more urgent initial bite upon application. Braking feels more powerful and responsive. The bit of free play is still at the top of the travel, though. Additionally, comfort stop and hill assist operation are smoother/less obtrusive too. The results do diminish somewhat, with time, but it feels good when done. |
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