View Single Post
      06-05-2021, 05:03 PM   #14
TTR
Captain
307
Rep
608
Posts

Drives: m3 f80, X3M, Huracan perf, 1m
Join Date: Jul 2017
Location: Portugal - Lisboa

iTrader: (0)

Quote:
Originally Posted by Transfer View Post
Sadly I agree. In October I did an HPDE day including emergency braking maneuvers where the brakes were disappointing. Maybe it's the pads though because on track at speed they felt very good heated up. Around town they feel nice and responsive but I'm never testing threshold braking.
First - until i made stage1 (680hp) map - brakes were more less, after remap - u have 2-3 time fast acceleration, for example in city 0-150 from stoplight and after it's feels like brake are completely gone... especially at summer time.

I was suprsed and start to investigate the problem, so

1. Yes, x3m has a big rotor and big brake caliper, BUT WITH SUPER SMALL PAD look a the picture bellow:




That's why the breaks feels so bad, even with their sizes.


After installing brembo 8 piston kit car has comletly different behavior on braking, especially when u brakes on high speed.


If you check picture bellow, u will find answer, u have 8 pistion and 4 pads instead of 2!!

This is proper brakes for the car, shame to bmw, that they put so weak brakes(



STOCK SIZE: 395x36mm 4 Piston

BREMBO KIT: 412x38 8 piston
Attached Images
  
Appreciate 4
cfm56d7b5849.00
The_Werm212.00
AndrewC198910903.50
kzg19691281.50