06-12-2018, 11:29 AM | #1 |
Colonel
3763
Rep 2,700
Posts |
Rear Brakes Overheat
Hi everyone,
last sunday I pushed the car a lot at a tight technical track and on last 3 sessions even with 2-3 cooling laps my rear brakes were screeching like hell when I went out for another session. after 1-2 laps enverything was fine also coming back on the road. It started about at the same time I got more confidence and started lapping with everthing off and more aggressivly. This happened to anywone else ? I was thinking maybe the e-Lsd was taxing the rear brakes a bit too much maybe ? I'm telling you, the heat coming from the rears was a lot more than the fronts.. This was done on OEM pads and Gulf R1000 fluid. Any comments/suggestions are welcome.
__________________
Fun/HPDE: 2023 M3 6MT Individual Malachite
Past:2023 M4 CSL, 2022 M4C Vert, 2020 M340i, 2018 M2, 2015 M235i, 2008 135i 550whp Daily: 2023 X5 45e Daily/Family: 2021 Atlas Cross Sport 3.6 |
06-12-2018, 02:45 PM | #2 |
Colonel
3805
Rep 2,860
Posts |
I know that I wore out my rear brakes at about 20k miles, and have heard from many that this related to the stability control. I seldom run in the full-DTC-off that activates the eLSD, but I think all of the stability systems work through the brakes. It would make sense that on a tight track you would really be working the LSD much harder. And FWIW, I've been advised by several to not run high-temp brake fluid w/o better pads - the thinking is that it is better to boil fluid (self-correcting), rather than let the pads and calipers heat to the point of meltdown damage (big problems and $$). May be less of an issue w/ these cars, as the 'stock' is still pretty far up the performance ladder (stock fluid is pretty close to the ATE I'm running in terms of boiling points - DK about the brakes, but I'm guessing they designed them to take some punishment).
|
Appreciate
0
|
06-12-2018, 04:21 PM | #3 | |
Colonel
3763
Rep 2,700
Posts |
Quote:
When talking about stock brakes you remind me about the OEM Brembos on the 135i, guys were melting the dust seals on them, but like you said the new M brakes seem to be stronger just guessing by the OEM pad performance. I think maybe my previous 3 sessions in sport+ put so much heat in them when stability kicked in that only leaving the car alone for a few hours would of worked. I am eager to see what happens with better pads..
__________________
Fun/HPDE: 2023 M3 6MT Individual Malachite
Past:2023 M4 CSL, 2022 M4C Vert, 2020 M340i, 2018 M2, 2015 M235i, 2008 135i 550whp Daily: 2023 X5 45e Daily/Family: 2021 Atlas Cross Sport 3.6 |
|
Appreciate
0
|
Post Reply |
Bookmarks |
Thread Tools | Search this Thread |
|
|