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      03-31-2024, 11:18 AM   #121
prostcfc
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Drives: 2020 BMW M340i
Join Date: Sep 2023
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Quote:
Originally Posted by Z K View Post
Did you change the brake fluid with high temp track brake fluid?
For this particular weekend, no. It was Motul 5.1 with stock pads. I'm switching in Endless RF-650 so we'll see how it goes. The difference on one rotor was <1mm and the other was closer to 1.5mm, so it's not much. I was also thinking it could be the reasoning you're stating.

Quote:
Originally Posted by cyam View Post
Actually the inside gets the most cooling. The brake air ducts are directed to the inside hub, where the air enters the center of the Rotor and flows through the vents in the Rotor. It means the inside pads would get the most direct airflow.
Conceptually I agree, but I wonder how well it works in practice. Here's an interesting video of this, though they are selling a product (last post in thread): https://f87.bimmerpost.com/forums/sh....php?t=2060907 Next HPDE I'm going to try and measure the temp difference on my own after a session and see what the delta is.
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