09-24-2021, 12:14 PM | #1 |
Brigadier General
2763
Rep 4,591
Posts |
I have 22k miles on my M40i.
Brake pads "look" ok. When are people changing them to avoid any damage to the disks? Also, any recommended brands to replace them? Thanks in advance. |
09-24-2021, 12:29 PM | #2 |
Lieutenant
367
Rep 533
Posts |
Changed at 40k miles. I went with DFC Euro Ceramic and overall mostly happy. They are quiet and after initial bedding they had great bite. As my wife has been driving I've noticed the pads don't have the bite they did unless I occasionally do a hard brake session to put down some material on the rotors again. Then bite is back. Dusting remains low.
|
Appreciate
2
Rbrown2762.50 MMeyerM40i131.00 |
09-24-2021, 12:54 PM | #3 |
Colonel
937
Rep 2,046
Posts
Drives: X3 G01 30i xDrive
Join Date: Feb 2018
Location: EU
|
When are people changing brake pads?
I've got 54k km on the odometer and it is asking for change (rears only). Still thinking whether leave that to the dealer or take it someplace else.
__________________
'18 G01 X3 xDrive 30i xLine, Sophisto grey, Vernasca Mocha, Adaptive
|
09-24-2021, 12:57 PM | #4 |
Captain
564
Rep 770
Posts |
You will get a warning when they are due. There is a sensor wire embedded in the pad which triggers the warning when grind down. Usually you are good to go for 2000km then.
If you want an alternative to the BMW OEM pads, I would go for Brembo P 06 099 And you need a new wear sensor: Febi Billstein 170747 or BMW 34356870351 |
Appreciate
4
|
09-27-2021, 11:16 AM | #7 |
Deadly
1364
Rep 2,115
Posts |
Yo peeps.
Thought I'd latch onto this thread rather than creating another. Glad I did because of this statement "You will get a warning when they are due. There is a sensor wire embedded in the pad which triggers the warning when grind down" So - I believe the brakes go initially off of mile/km based warning. I know this because I'm nosey and keep an eye on things. For the past few months I've been watching the count of miles go down, and finally it reach 1200miles today and gave an alert to say change those pads. However ... 1, I tend to drive in anticipation, so brakes a last resort - i.e. they should wear down less than Joe Public 2, this mileage count is most probably like the one in previous gen, i.e. a collective estimation based on what someone in Germany thinks is likely; so essentially a waste of time but more importantly 3, Based on the above, i.e. the warning now is of an ignorant computer as to what is reality, when and in what form does an alert come for "I hit the wear sensor dude" Oh, and the icing on the cake, anyone in UK had rear pads done and how much did it cost? |
Appreciate
1
Rbrown2762.50 |
09-27-2021, 02:22 PM | #9 |
Deadly
1364
Rep 2,115
Posts |
|
Appreciate
0
|
09-27-2021, 02:40 PM | #10 |
Colonel
937
Rep 2,046
Posts
Drives: X3 G01 30i xDrive
Join Date: Feb 2018
Location: EU
|
My warning is on for about 2 months now, initially said 2000km to go, now it's 800 a today it was checked and I was told the pads have 5mm. So I guess it's pretty accurate.
__________________
'18 G01 X3 xDrive 30i xLine, Sophisto grey, Vernasca Mocha, Adaptive
|
Appreciate
1
Rbrown2762.50 |
09-27-2021, 05:51 PM | #12 | |
Private First Class
83
Rep 185
Posts |
Quote:
Not sure what an indie would charge for the pukka stuff, rather than cheaper Mintex or EBC pads. Fronts £298 pads only, £670 with discs. Ouch! Oddly for a 3+ year old X3, brake fluid replacement is £52, yet for wife's Cooper S (2020 reg), the cost would be just over £100. 🤷*♂️ |
|
Appreciate
1
Rbrown2762.50 |
09-28-2021, 02:09 PM | #13 |
Private First Class
34
Rep 107
Posts |
|
Appreciate
0
|
09-30-2021, 07:57 AM | #14 |
Banned
41
Rep 106
Posts |
I have 70k KM on my X4 and I've had brakes changed 3x times now. Rears go first, but my fronts are usually within 2k of the rears so I wait and do them together.
The above answers are correct. The sensors will give you a 2k KM heads-up |
Appreciate
1
Rbrown2762.50 |
10-01-2021, 11:10 AM | #15 |
Deadly
1364
Rep 2,115
Posts |
44k - however I am fast but 'predictive' driver - i.e. give lots of room to avoid having to brake. I checked the pads and they're ample, so proves this mileage countdown is just a generic effort of a best guess based on typical driving profile.
Ironically it popped up with brake fluid service a few days later, so I'll get this confirmed when I can be arsed to get that done. |
Appreciate
0
|
10-01-2021, 05:23 PM | #16 | |
Lieutenant
278
Rep 502
Posts |
Quote:
When the pad wears down enough to allow the sensor to hit the rotor - the sensor gets ground down (ruined) and sends a signal that your pads are worn down. |
|
Appreciate
2
Ravenous666563.50 anuragdatta10.50 |
10-02-2021, 03:56 AM | #17 | |
Deadly
1364
Rep 2,115
Posts |
Quote:
Let's continue this thought experiment with a driver in a country with no cars. He/She drives around at ease, and hardly ever uses the brakes, hey there's no need because there is no-one else around (perhaps a good sci-fi film here :-). So that person hasn't used the brakes (or rarely) yet the computer is still merrily counting down. Another experiment. A driver that hammers the anchors at every opportunity - rides those brakes. When they hit 10 000 (even though the computer is still saying 35 000 left), they hit the wear sensor since they've been riding those brakes HARD. So my proposition is that there are two different systems in play. One is the iDrive which has an estimate of when they'll fail, the other is the binary sensor which, when hit, flags a different kind of alert. That's my position, but I wholly accept anyone to flame this. Thus, due to my driving style (and visual inspection of the pads) I believe I am good for at least another 10-15k, even though the computer is telling me it's time for a change. |
|
Appreciate
1
D69GMB520.50 |
10-02-2021, 09:51 AM | #18 | ||
Colonel
937
Rep 2,046
Posts
Drives: X3 G01 30i xDrive
Join Date: Feb 2018
Location: EU
|
Quote:
__________________
'18 G01 X3 xDrive 30i xLine, Sophisto grey, Vernasca Mocha, Adaptive
|
||
Appreciate
0
|
10-02-2021, 10:24 AM | #19 | |
Lieutenant Colonel
829
Rep 1,933
Posts |
Quote:
|
|
Appreciate
0
|
10-02-2021, 10:47 AM | #20 |
Lieutenant Colonel
829
Rep 1,933
Posts |
There is a brake symbol that lights up on the dashboard once the wear sensor is triggered, that warning lamp will not be extinguished until a new pad sensor is refitted, along with new pads- look in your car's owners manual - it will be explained.
|
Appreciate
0
|
10-02-2021, 11:27 AM | #21 | |
Private First Class
34
Rep 107
Posts |
Quote:
My question really is does BMW manufacture the rotors thicker than their minimum requirement so they can be resurfaced. Or does BMW purposely manufacture rotors at the minimum thickness in order to make extra money on having rotors always replaced? |
|
Appreciate
0
|
10-02-2021, 11:34 AM | #22 | ||
Lieutenant Colonel
829
Rep 1,933
Posts |
Quote:
I typically get at least one and more typically 2 pad changes before rotors are below spec. Thickness. |
||
Appreciate
1
Raphael X434.00 |
Post Reply |
Bookmarks |
|
|