07-11-2016, 12:45 PM | #23 | |
Supreme Allied Commander
3893
Rep 54,605
Posts
Drives: F80 M3
Join Date: Mar 2007
Location: Santa Barbara, AP, Brembo, GIAC, Koni, Ohlins, Performance Friction, www.hpautosport.com
|
Quote:
|
|
Appreciate
0
|
07-25-2016, 05:40 PM | #24 |
Private First Class
10
Rep 197
Posts |
I'm running stock brake fluid and stock pads. I believe the majority of people need to learn how to brake. Also to my shock and horror noone has mentioned to open the air tunnel to the center of the rotors??? I've run 30m+ on high speed tracks without any over heating issues at all.
Changing fluid and pads before learning how to brake or even investigating the existing cooling mechanisms of the car is only hurting your racing learning curve and wallets! |
Appreciate
0
|
07-26-2016, 08:58 AM | #25 |
Lieutenant Colonel
715
Rep 1,541
Posts |
If you get spongy feel it's your fluid boiling over. Not to say your pads also aren't having issues, but pedal feel is mostly from your fluid.
Best to do both. If you're boiling the fluid your pads aren't far behind (if not already). Also keep in mind once you "boil" your fluid once it's basically worthless for track use. Motul RBF600 is my go to fluid. Never failed me on the track. Pads are more subjective. I tend to be very careful with taking pad advice from people when I don't know their driver level (lap times). FWIW I'll probably be going with Pagid pads this fall when I take the 235 out for it's first track day. I tend to be faster on/off on the brakes than most. I get good life out of my rotors/pads. Some people will go through pads and rotors in one track day. Last edited by Anthony235; 07-26-2016 at 09:03 AM.. |
Appreciate
0
|
09-25-2016, 01:45 PM | #26 |
Major
448
Rep 1,372
Posts |
Let's not beat this to death but, yep, spongy brake = boiling fluid. Brake fluid does absorb a lot of water. Live in a dry climate maybe you can push beyond 12 months. Live by the sea, a lake, even a big river, at least every 12 months or less. As long as the fluid is DOT 4 (and suitable for use in BMW) you should be good. Naturally higher levels (ie DOT 5) should be even better but I do not know if BMW may use DOT 5. Find out if you plan to use it. The point, more than brand, frequency of change and at least DOT 4 is more important.
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|