Stock Problems/Issues Discussions related to warranty related issues and repairs, or other problems with the OEM parts and software for MINI Cooper (R50), Cabrio (R52), and Cooper S (R53) MINIs.

Blah! Brake fade

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Old May 7, 2008 | 11:42 AM
  #1  
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bent tech
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Blah! Brake fade

After several 230kmh hard stops on the highway or some very curvy road Im experiencing pretty bad fading. No money left for a BBK, but are there any DIY tips?

About 8000km ago replaced everything with EBC pads and slotted rotors, everything works great, but I remember that I used some off the shelf brake fluid, should I replace the fluid with something better? I dont want to change the pads as they work very well on the street. Would a 4piston setup work better?

Any way to introduce more cooling, some kind of underbody vent or something? Anything else I can do?

Forgot to add that I have SS brake lines.
 

Last edited by bent tech; May 7, 2008 at 11:57 AM. Reason: add
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Old May 8, 2008 | 08:08 AM
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nabeshin
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Use fluid with a higher boiling point. I have Motul 600, slotted rotors, ss lines, and hawk HPS pads. No brake fade.
 
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Old May 8, 2008 | 08:34 AM
  #3  
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From: SoCaL (Agoura Hills)
Originally Posted by bent tech
After several 230kmh hard stops on the highway or some very curvy road Im experiencing pretty bad fading. No money left for a BBK, but are there any DIY tips?

About 8000km ago replaced everything with EBC pads and slotted rotors, everything works great, but I remember that I used some off the shelf brake fluid, should I replace the fluid with something better? I dont want to change the pads as they work very well on the street. Would a 4piston setup work better?

Any way to introduce more cooling, some kind of underbody vent or something? Anything else I can do?

Forgot to add that I have SS brake lines.
EBC Pads suck, if you're brakes are FADING then it's the pads. If the pedal is getting mushy, it's the fluid. Most off the shelf brake fluid is fine as long as it's Dot 4 and isn't over 6 months to a year old.

A 4 Piston setup has nothing to do with brake fade, more pistons = more even pressure on the pad. Swapping to pads with a higher temperature curve will help...
 
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Old May 8, 2008 | 10:33 AM
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Originally Posted by rustyboy155
A 4 Piston setup has nothing to do with brake fade...
That would only be true if the 4-piston has the the same contact area, which is not going to be the case when comparing it to the single piston oem brakes. Here's what Stoptech has to say on the matter:

Why do I need a big brake upgrade?

Modern stock brake systems, for the most part, work well for a single 60-0 or 80-0 stop, and average daily street driving. The typical performance enthusiast will quickly push the stock brake system beyond its capabilities. Driving style and other performance modifications such as increased horsepower, tire and suspension upgrades quickly add up to overpowering stock brakes. A big brake kit will provide increased heat capacity, which means substantially more resistance to brake fade and caliper distortion with multiple stops from high speed. A firmer pedal due to stronger and stiffer components, as well as better modulation characteristics under threshold braking are also typical with a properly balanced brake upgrade.

Here's a link...
http://www.stoptech.com/tech_info/faqs.shtml#2
 
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Old May 8, 2008 | 12:12 PM
  #5  
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From: Holly Springs, NC
I buy that... for track sessions....

But I drive the Dragon and surrounding roads HARD... and have NEVER experienced fade with OEM calipers, high-temp fluid and aftermarket ceramic pads... though I'm sure a BBK might have a little crisper "feel"...
 
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Old May 8, 2008 | 01:26 PM
  #6  
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bent tech
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Originally Posted by rustyboy155
EBC Pads suck, if you're brakes are FADING then it's the pads. If the pedal is getting mushy, it's the fluid. Most off the shelf brake fluid is fine as long as it's Dot 4 and isn't over 6 months to a year old.

A 4 Piston setup has nothing to do with brake fade, more pistons = more even pressure on the pad. Swapping to pads with a higher temperature curve will help...
Its fading, no mushiness. Ill still switch the brake fluid as it was some generic stuff from Tesco.

Thanks all for the advice, first thing Im going to hunt around for new pads. EBCs are easy to get in Germany, hence why I went with them.
 
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Old May 8, 2008 | 01:46 PM
  #7  
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From: 127.0.0.1
Originally Posted by bent tech
Its fading, no mushiness. Ill still switch the brake fluid as it was some generic stuff from Tesco.

Thanks all for the advice, first thing Im going to hunt around for new pads. EBCs are easy to get in Germany, hence why I went with them.
Which EBC pads are you using? Green, Red, Yellow?
I have switched from the greens to the reds because I have felt brake fade with the greens. I ran the reds at a track day with a pretty quick braking area for a turn (~120 down to 40) and didn't have an issue with fade. Of course I have long since replaced the stock fluid with ATE Super Blue.
 
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Old May 9, 2008 | 01:32 AM
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The greens. Pretty good for around town and not that much brake dust, but from what I see they are the culprit.
 
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