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      09-26-2021, 10:19 AM   #1
oranzada_m2c
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M2C 2NH brakes

Did you apply warranty for calipers 2NH? Rear calipers are matching same color like brake fluid.... rear dusters are not good condition....

fronts are ok...
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      09-26-2021, 11:48 AM   #2
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This is normal for track use, and BMW will do nothing for you in that event. However, if you haven't used the car on a track then it's not normal, not even with age, as it's a sign of extreme heat, and they may help you out with it. But I'm sure it's track use.
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      09-26-2021, 01:35 PM   #3
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Quote:
Originally Posted by oranzada_m2c View Post
Did you apply warranty for calipers 2NH? Rear calipers are matching same color like brake fluid.... rear dusters are not good condition....

fronts are ok...
Did you do cool down laps? 2/3
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      09-26-2021, 01:58 PM   #4
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Quote:
Originally Posted by VisualEcho View Post
This is normal for track use, and BMW will do nothing for you in that event. However, if you haven't used the car on a track then it's not normal, not even with age, as it's a sign of extreme heat, and they may help you out with it. But I'm sure it's track use.
yeap track use.... iam using shims... ok thanks... i have to change dust boots over pistons....
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      09-26-2021, 06:17 PM   #5
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TC on I assume? Rear brake usually don't get abused as much, unless you have full traction
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      09-27-2021, 12:19 AM   #6
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Yep, you can definitely see this is a result of track use as you can see the pad deposit in the holes of the rotors.

It seems this car is driven on a fast/high speed track with traction control on.

If your rear brakes are discolouring over the front brakes, then it means the rears are clamping down with traction control intervention when the car is at high speed, which causes a lot of heat. (If you drive with traction control fully off, this will negate the rear brakes clamping down without your braking input as traction control won't intervene).

Think of it this way, if you are travelling at 180 km p/h and you see your traction control light flickering, it means the rear brakes have slightly clamped onto the rotor, you can then imagine the amount of heat that would generate.
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      09-27-2021, 12:51 AM   #7
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Iam using mdm or tc off…
Front brakes have cooling, rear nothing… i am using on track endless me22 oem bmw disc on the rear brakes, on front girodisc disc and endless me22 or pagid rsl
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      09-27-2021, 01:26 AM   #8
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Quote:
Originally Posted by oranzada_m2c View Post
Iam using mdm or tc off…
Front brakes have cooling, rear nothing… i am using on track endless me22 oem bmw disc on the rear brakes, on front girodisc disc and endless me22 or pagid rsl
Interesting to know. Seems like MDM was doing small brake intervention to introduce high speed stability. I always run with Mdm at my local track day but we don't have a lot of high speed corners to signify what you experienced.
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      09-27-2021, 01:11 PM   #9
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High speed corners are less of a problem than slow corners at the end of a quick section. Or to put it another way: Big Stops...
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