e90 325i Brake Pad

[Schwepps]

Your brakes may not be disengaging. It happened to me when I took delivery of our W211. The rear brakes were not disengaging from the start, and the rotors got so scoured they had to be changed at 2k mileage. C&C tried to say they could skim the rotors but I insisted they change them as it was a brand new car. No choice but to go in I reckon, AB.

 

[viewfinder]

Wow... not disengaging means the rear brake is being applied all the time? Yeah, skimming rotors is non ideal. Can result into warp rotors.

 

[Schwepps]

Yeah, shortly after that there was a brake recall for all W211s sold at that time.

 

[racheltoh]

17.4.2010, there was another 5000k before i need to change the front brake pad

 

[Schwepps]

Better change now, Rachel. Otherwise you risk scoring your discs, and it'll cost you to skim or replace them. Even with 5k to go, it's time to change the pads. It's covered under BSRI anyway.

 

[racheltoh]

ai-seh-man..another trip to the hospital AGAIN...

 

[astroboy]

Rachel, your pad wear sensor has just popped! Time to replace the pad and the popped sensor, u should have less than 2mm on the pad with the sensor. Only 1 of the 4 front pads has sensor. All 4 pads normally don't wear evenly and u better hope the other pads still have some balance or else, it will be metal scrubbing liao!

My left rear inner pad is no more than 2mm, my sensor hasn't pop, yet my OBC still say I have 17k km to go.. :stupid:

Got time for story?

My wife complained car when brake, got sound. So I tested the car without her presence. I was running brand new Yoko C-Drive at front and OEM CSC2 RFT at the rear, pretty worn, but can pakai by my definition. When brake, the Yoko sounded very harsh with the "wow~wow~wow" sound when I brake. Like how a traveling fleet of army truck sounded. Fast no sound, slowing down, got slight noise, when brake, very obvious. I suspected bearing, trans, diff, brake, rotor and all possible noise makers. I got Ingress to test the car, they jack it up, check all the wheel assembly components and pointed to the Yoko as culprit.

I went back to the tyre shop, test again, the boss told me he warned me before about the tyre as it has high tread wear index of 320, so its a relatively hard compound, and huge water drainage design that will trap air and become noisy. We did a swap to put my pretty worn CSC2 to the front and C-Drive go to the rear. Viola! army truck wow~wow sound no more. The almost botak CSC2 is more quieter than a brand new C-Drive!!

So with that confirmed, C-Drive must take the back seat. My E90 can't survive the wet with an almost botak CSC2 in the front and it will be very dangerous when my wife is driving. I had to find 2 new tyres for the front to replace the CSC2. I spent the morning in the SC to test the car, the afternoon at friend's tyre shop to test and swap the tyres and he closes at 3pm due to some family emergency.

I took the plunge and drive down to Klang the same evening to hunt for CSC2 replacement. With a budget of no more than RM400/pc, I intended to look for Hankook Ventus V12.. the shop that I went only carry Falken 452, PS2 (RM675), Potenza Adrenalin (RM485) and PS3 (RM510).. since so many good review on PS3, I took the plunge loo.

Very happy, told the wife I solve the mysterious noise with RM1040. Next day, we took the car out test drive it, I ask her to listen to the sound, see still got or not. She say very easy, wind down the window and listen. I puzzled, did as told but hear no noise. I ask her what she's hearing? She say brake SQUEAKING NOISE!!

So I have just spent RM1k to replace tyres trying to solve brake squeaking noise.. duh!

This morning she just text me. Noise still there.. Drive into building car park, wind down window to touch entry pass, can hear brake squeaking sound..

 

[BMWs]

Change breakpad have to change break sensors too. Cause of the OBC countdown. Break sensor cost RM38 at Bavarian Auto.

Cheers

 

[racheltoh]

Astroboy..u r scaring me la

 

[astroboy]

Change breakpad have to change break sensors too. Cause of the OBC countdown. Break sensor cost RM38 at Bavarian Auto.

Cheers

Ya meh? I thought brake sensor can pakai balik?!
E90 320i N46B20 front brake:

Item 12 is the brake pad sensor, same like this. It shall break when pad is

 

[racheltoh]

my bf likes to play peek-a-boo le. for one whole week, the indicator came on. just yesterday and today, no more indicator. click on idrive, it says OK. now i m real worried if idrive is ever accurate!

 

[astroboy]

Rachel, can do a visual inspection on the balance brake pad. U have 18" rims, so should be very easy to check. Anything above 2mm, u still have weeks to decide when u need to replace it.

Refer to the following image.. u don't have to remove the wheels to be able to see this. Ignore all the wordings because I just pinjam the photo. Pay attention to the "H" on the word "Heavy".. that is the brake pad and it gets thinner through time. The one shown in the photo still has about 7mm, pretty new pad.

Check all 4 wheels just to be sure as not every pad wear at the same rate. This is just a guide because you can't see the inner pad. All these are the outer pads. Your inner pad may have a +1/-1mm difference.

 

[Schwepps]

Is it worth taking the risk though? The pads are free under BSRI, and they might change your brake fluid too, as they've already changed mine. The discs are not covered under BSRI, I don't think. Once you score them, you'll have the dreaded singing brakes. :40:

 

[astroboy]

Is it worth taking the risk though? The pads are free under BSRI, and they might change your brake fluid too, as they've already changed mine. The discs are not covered under BSRI, I don't think. Once you score them, you'll have the dreaded singing brakes. :40:

The disc rotor is under BSRI, confirm! :listen:

Our princess very busy wan, but what Schwepps said is very true. I will try to book Friday to replace my rear pad.. missy complain got brake squeak.. I better get it sorted out..

 

[Schwepps]

The disc rotor is under BSRI, confirm! :listen:

Oooo...that's good! :top: But they'll probably skim first before replacing them.

There's no harm in going in for oil change 1 month early and doing all that's necessary in one go.

 

[racheltoh]

.... ..... ....... ..... *speechless*

ok ok i will bring the bf to check in soon. and that would mean changing oil at 5k interval instead of 10k km.

 

[Schwepps]

If it's coming up to 6 months interval, it doesn't matter what mileage your oil is. 6 months is a good time to change.

 

[racheltoh]

schwepps, just changed in April before my 2 yr ended...that;s why
seems like every month visiting the branch

 

[astroboy]

Oooo...that's good! :top: But they'll probably skim first before replacing them.

There's no harm in going in for oil change 1 month early and doing all that's necessary in one go.

No wor. Skimming is not in the BMW service bulletin, so they can't and don't know how to do. Toyota will skim for u during warranty period. If after warranty, they say they don't skim.

My Front left pad. Changed under BSRI couple months back. The red dot is the pad.

Rear Left.. 3mm??

Less than 3mm??

OBC says rear pad still has 17k km to go.. I've just book Friday to drop the car in SC for the rear pad job... squeaking sound very obvious when surrounding quiet, soft radio volume, with window down and objects next to car to bounce the noise back. I seldom encounter these conditions but wife suffer every morning when she reaches her office building car park, all conditions met and is driving her mad..

 

[Schwepps]

schwepps, just changed in April before my 2 yr ended...that;s why
seems like every month visiting the branch

If you changed it in April, then why were you planning to change again in June (per your earlier post)