F30 335D xDribe Front Brake Disc Corroded

satish_141 · 08-03-2020, 03:51 AM

Gents my car is recently been to BMW and in the Vehicle check video the technician has highlighted that both my Front Brake Discs are heavily corroded on the inside and pads needs replacing too. My car is done 34K miles and are discs covered under extended warranty? I checked online and it is a big bill of £730 to get both fron discs and pads replaced. Just wanted to check what options do I really have. Btw not driving the car at the moment...Please advise...thanks

davidr3 · 08-03-2020, 04:13 AM

Considered maintenance unfortunately so I doubt they cover you under warranty unless they consider it a "defect" which you may be able to push for it. got any pics of this "corrosion" that they claim?

satish_141 · 08-03-2020, 04:28 AM

Quote:

Originally Posted by davidr3

Considered maintenance unfortunately so I doubt they cover you under warranty unless they consider it a "defect" which you may be able to push for it. got any pics of this "corrosion" that they claim?

thank you. I have a video, please have a look...

https://video.citnow.com/vtSL871fFm_

dmaxdmax · 08-03-2020, 04:46 AM

So given it's under warranty...you need new front rotors and pads, at least.

I can't see them arguing against covering it under warranty...and, if I were you, I'd ask if they're going to replace the calipers as well?

There is some reason why the pad isn't hitting the inside rotor as it should...something isn't right.

satish_141 · 08-03-2020, 04:57 AM

Quote:

Originally Posted by dmaxdmax

So given it's under warranty...you need new front rotors and pads, at least.

I can't see them arguing against covering it under warranty...and, if I were you, I'd ask if they're going to replace the calipers as well?

There is some reason why the pad isn't hitting the inside rotor as it should...something isn't right.

thank you, do you think this shuld be covered under warranty then?

davidr3 · 08-03-2020, 02:08 PM

Quote:

Originally Posted by satish_141

thank you, do you think this shuld be covered under warranty then?

I would consider this a defect, seems like there's some protective coating that must be missing for it to corrode to that degree. I'd push for a goodwill or it fixed under warranty.

dmaxdmax · 08-03-2020, 02:16 PM

Quote:

Originally Posted by davidr3

I would consider this a defect, seems like there's some protective coating that must be missing for it to corrode to that degree. I'd push for a goodwill or it fixed under warranty.

The inside pads aren't hitting the rotor evenly.

I've seen them where only the middle hits on a single piston caliper. On ours, perhaps one of your pistons is binding causing that pattern. It's not the rust...it's that the pads aren't cleaning the rust off I think.

The pistons or the calipers aren't sliding as they should.

davidr3 · 08-03-2020, 02:23 PM

Quote:

Originally Posted by dmaxdmax

The inside pads aren't hitting the rotor evenly.

I've seen them where only the middle hits on a single piston caliper. On ours, perhaps one of your pistons is binding causing that pattern. It's not the rust...it's that the pads aren't cleaning the rust off I think.

The pistons or the calipers aren't sliding as they should.

Aah, I see your point. I can see that now, regardless should be a defect unless OP did some self-inflicted damage. but I doubt that.

dmaxdmax · 08-03-2020, 02:47 PM

If I was out of warranty, I'd replace pads, rotors, and get remanned calipers...or perhaps see if there's a rebuild kit...clean up the pistons.

There's nothing the OP could have done to be responsible for this on both sides. I'd hint to the dealer that I hope this isn't the beginning of signs of a factory defect...something we should all be paying attention to.

OP may have let it sit outside, maybe sprayed it with salt and dirt and grease...but these are bmw brakes and should hold up to all conditions. Pads and rotors might be consumables and not covered, but a caliper not sliding or piston not working...that's not consumable...and because it was defective, both the pads and rotors are toast too. Neither of the later contributed to this.

OP...use the 'class action' language...and be really nice...and mention the thousands the world over following this service tech's response.

Good luck.

Billfitz · 08-03-2020, 03:23 PM

Goof ups at the factory do happen. My experience:
https://f30.bimmerpost.com/forums/sh....php?t=1471617

The damage to the rotors isn't normal wear. It would be interesting to see what the inner pads look like.

satish_141 · 08-04-2020, 08:21 AM

Thank you all, but the in video BMW technician only recommends chanding discs and pads but nothing he highlighted about Callipers or possible piston issues?

https://video.citnow.com/vtSL871fFm_

Billfitz · 08-04-2020, 10:18 AM

Problems with the calipers etc. can only be diagnosed with the wheels off. I'd call this a very basic inspection, by no means thorough.

08-03-2020, 03:51 AM	#1
satish_141 Lieutenant 95 Rep 478 Posts Drives: F30 320i Join Date: Nov 2010 Location: Reading iTrader: (0)	F30 335D xDribe Front Brake Disc Corroded Gents my car is recently been to BMW and in the Vehicle check video the technician has highlighted that both my Front Brake Discs are heavily corroded on the inside and pads needs replacing too. My car is done 34K miles and are discs covered under extended warranty? I checked online and it is a big bill of £730 to get both fron discs and pads replaced. Just wanted to check what options do I really have. Btw not driving the car at the moment...Please advise...thanks
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08-03-2020, 04:13 AM	#2
davidr3 Captain 448 Rep 909 Posts Drives: 335i Join Date: May 2019 Location: Riverside iTrader: (1)	Considered maintenance unfortunately so I doubt they cover you under warranty unless they consider it a "defect" which you may be able to push for it. got any pics of this "corrosion" that they claim?
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08-03-2020, 04:46 AM	#4
dmaxdmax Captain 417 Rep 919 Posts Drives: 2016 M235i 6-spd Join Date: Jan 2020 Location: New Jersey iTrader: (0)	So given it's under warranty...you need new front rotors and pads, at least. I can't see them arguing against covering it under warranty...and, if I were you, I'd ask if they're going to replace the calipers as well? There is some reason why the pad isn't hitting the inside rotor as it should...something isn't right. __________________ '92 325i, '99 328i, '16 340i, '16 M235i all manuals dmax on FB My last pre-covid standup set
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08-03-2020, 02:47 PM	#9
dmaxdmax Captain 417 Rep 919 Posts Drives: 2016 M235i 6-spd Join Date: Jan 2020 Location: New Jersey iTrader: (0)	If I was out of warranty, I'd replace pads, rotors, and get remanned calipers...or perhaps see if there's a rebuild kit...clean up the pistons. There's nothing the OP could have done to be responsible for this on both sides. I'd hint to the dealer that I hope this isn't the beginning of signs of a factory defect...something we should all be paying attention to. OP may have let it sit outside, maybe sprayed it with salt and dirt and grease...but these are bmw brakes and should hold up to all conditions. Pads and rotors might be consumables and not covered, but a caliper not sliding or piston not working...that's not consumable...and because it was defective, both the pads and rotors are toast too. Neither of the later contributed to this. OP...use the 'class action' language...and be really nice...and mention the thousands the world over following this service tech's response. Good luck. __________________ '92 325i, '99 328i, '16 340i, '16 M235i all manuals dmax on FB My last pre-covid standup set
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08-03-2020, 03:23 PM	#10
Billfitz Lieutenant General 8256 Rep 16,101 Posts Drives: '15 328iX GT Join Date: Jan 2015 Location: New Hampshire iTrader: (0)	Goof ups at the factory do happen. My experience: https://f30.bimmerpost.com/forums/sh....php?t=1471617 The damage to the rotors isn't normal wear. It would be interesting to see what the inner pads look like.
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08-04-2020, 08:21 AM	#11
satish_141 Lieutenant 95 Rep 478 Posts Drives: F30 320i Join Date: Nov 2010 Location: Reading iTrader: (0)	Thank you all, but the in video BMW technician only recommends chanding discs and pads but nothing he highlighted about Callipers or possible piston issues? https://video.citnow.com/vtSL871fFm_
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08-04-2020, 10:18 AM	#12
Billfitz Lieutenant General 8256 Rep 16,101 Posts Drives: '15 328iX GT Join Date: Jan 2015 Location: New Hampshire iTrader: (0)	Problems with the calipers etc. can only be diagnosed with the wheels off. I'd call this a very basic inspection, by no means thorough.
	Appreciate 0 Quote