Interesting problem on door of f10 m5

drbru · 04-26-2021, 05:22 PM

So any idea what the door panels are made of...I was always under the impression it was aluminium but then ive just spotted this and looks like rust under the paintwork???!!! However, if they are aluminium, it begs the question, if not rust then what is this??

Doctor_X · 04-26-2021, 05:48 PM

They’re steel, and for sure that’s rust. Had the car been repaired at some point?

AlisterB · 04-26-2021, 07:24 PM

I thought they were aluminium too?

Doctor_X · 04-26-2021, 08:01 PM

Wow - just checked and it looks like the doorskin is aluminum!

Never knew

Blaxwil · 04-26-2021, 08:26 PM

Looks like paint blistering. Could be due to extreme fluctuations in temperature or humidity.

M5Rick · 04-27-2021, 01:23 AM

Get the mini file on it and see, if there's white powder underneath the paint then it's the alloy corroding.

drbru · 04-27-2021, 02:00 AM

So i know there is a 12 year anti corrosion warranty....Lets see if I can claim on this

AlisterB · 04-27-2021, 02:10 AM

Has the car had any paint/panel work?

If not, the BMW corrosion warranty should cover you.

04-26-2021, 05:22 PM	#1
drbru Lieutenant 99 Rep 483 Posts Drives: f10 m5 Join Date: Jan 2014 Location: London iTrader: (0)	Interesting problem on door of f10 m5 So any idea what the door panels are made of...I was always under the impression it was aluminium but then ive just spotted this and looks like rust under the paintwork???!!! However, if they are aluminium, it begs the question, if not rust then what is this?? Attached Images
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04-26-2021, 05:48 PM	#2
Doctor_X Banned 1158 Rep 545 Posts Drives: 2015 M5 CP - 2022 M5 CS Join Date: Sep 2016 Location: Phoenix iTrader: (1) Garage List 2015 BMW M5 CP [0.00] 2022 BMW M5 CS [0.00]	They’re steel, and for sure that’s rust. Had the car been repaired at some point?
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04-26-2021, 07:24 PM	#3
AlisterB First Lieutenant 171 Rep 349 Posts Drives: F10 M5 Join Date: Jul 2019 Location: Melbourne, Australia iTrader: (0)	I thought they were aluminium too?
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04-26-2021, 08:01 PM	#4
Doctor_X Banned 1158 Rep 545 Posts Drives: 2015 M5 CP - 2022 M5 CS Join Date: Sep 2016 Location: Phoenix iTrader: (1) Garage List 2015 BMW M5 CP [0.00] 2022 BMW M5 CS [0.00]	Wow - just checked and it looks like the doorskin is aluminum! Never knew
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04-26-2021, 08:26 PM	#5
Blaxwil Captain 627 Rep 648 Posts Drives: 2015 M5 Join Date: Feb 2018 Location: Atlanta iTrader: (0)	Looks like paint blistering. Could be due to extreme fluctuations in temperature or humidity.
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04-27-2021, 01:23 AM	#6
M5Rick General 60015 Rep 19,524 Posts Drives: M5 F10 DCT Gunmetal Join Date: Aug 2018 Location: Southern England iTrader: (0)	Get the mini file on it and see, if there's white powder underneath the paint then it's the alloy corroding.
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04-27-2021, 02:00 AM	#7
drbru Lieutenant 99 Rep 483 Posts Drives: f10 m5 Join Date: Jan 2014 Location: London iTrader: (0)	So i know there is a 12 year anti corrosion warranty....Lets see if I can claim on this
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04-27-2021, 02:10 AM	#8
AlisterB First Lieutenant 171 Rep 349 Posts Drives: F10 M5 Join Date: Jul 2019 Location: Melbourne, Australia iTrader: (0)	Has the car had any paint/panel work? If not, the BMW corrosion warranty should cover you.
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