2015 M3 Chassis Flex

roberte · 06-05-2015, 02:20 PM

I have 6K miles on my 2015 M3. Couple of days ago I noticed ripples on top of the right front fender where the fender curves to meet the windhield pillar. I took it to my PDR guy and he told me that due to the stiffness of this car and the chassis flex, it's causing the aluminum fender to crease in that specific area.

Has any one run into this issue? There is a slight ripple on the left fender but it's more noticable on the right.

AIRPOWER · 06-05-2015, 02:32 PM

CanAutM3 · 06-05-2015, 02:46 PM

Quote:

Originally Posted by roberte

...he told me that due to the stiffness of this car and the chassis flex, it's causing the aluminum fender to crease in that specific area.

roberte · 06-05-2015, 03:06 PM

Will post pictures shortly. Need to be in the right light.

JNoSol · 06-05-2015, 03:35 PM

The explanation is ridiculous. The F80 is extremely rigid, more rigid than a Lexus LFA. It would not have anything to do with the fender wrinkle. If so, it'll be the first to hear of this for any car.

Any chicks sat on our car taking selfies?

gthal · 06-05-2015, 07:50 PM

Silly response by the PDR guy.

JoeFromPA · 06-07-2015, 06:11 AM

So the chassis is so stiff that it doesn't bend but the aluminum fender, mounted to the unbending chassis, does bend....?

Somehow the aluminum, affixed to a structure that is receiving bending/twisting forces but is not bending/twisting, is transferring that load to the aluminum fender.....

Think this through a little bit. And don't go back to that PDR guy.

06-05-2015, 02:20 PM	#1
roberte Registered 0 Rep 2 Posts Drives: 2015 BMW M3 Join Date: Jun 2015 Location: San Jose, CA iTrader: (0)	2015 M3 Chassis Flex I have 6K miles on my 2015 M3. Couple of days ago I noticed ripples on top of the right front fender where the fender curves to meet the windhield pillar. I took it to my PDR guy and he told me that due to the stiffness of this car and the chassis flex, it's causing the aluminum fender to crease in that specific area. Has any one run into this issue? There is a slight ripple on the left fender but it's more noticable on the right.
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06-05-2015, 02:32 PM	#2
AIRPOWER Lieutenant Colonel 1683 Rep 1,812 Posts Drives: 2015 6MT YMB M3, 1974 Corvette Join Date: Apr 2015 Location: NW Florida iTrader: (0) Garage List 2015 BMW M3 [9.67]	__________________ AIRPOWER
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06-05-2015, 03:06 PM	#4
roberte Registered 0 Rep 2 Posts Drives: 2015 BMW M3 Join Date: Jun 2015 Location: San Jose, CA iTrader: (0)	Will post pictures shortly. Need to be in the right light.
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06-05-2015, 03:35 PM	#5
JNoSol Brigadier General 1385 Rep 3,834 Posts Drives: 750 MSPORT & E90M3 Join Date: Feb 2012 Location: Kansas City iTrader: (0)	The explanation is ridiculous. The F80 is extremely rigid, more rigid than a Lexus LFA. It would not have anything to do with the fender wrinkle. If so, it'll be the first to hear of this for any car. Any chicks sat on our car taking selfies? __________________ Daily: G12 750 MSPORT Weekend Car: E90 M3
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06-05-2015, 07:50 PM	#6
gthal Major General 1904 Rep 5,678 Posts Drives: 2018 340i xDrive Join Date: Jul 2007 Location: Canada iTrader: (2)	Silly response by the PDR guy. __________________ 2020 X3 M40i \| Black \| Current DD 2020 C8 Corvette \| Z51 \| Torch Red ... built and waiting for delivery 2016 M2 \| Long Beach Blue \| 6MT 2015 M4 \| Austin Yellow \| DCT 2012 MB C63AMG \| 2011 E92 M3 \| 2010 E92 M3
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06-07-2015, 06:11 AM	#7
JoeFromPA Colonel 1797 Rep 2,997 Posts Drives: '15 AW M3 6MT Stripper Join Date: Aug 2013 Location: SE PA iTrader: (0)	So the chassis is so stiff that it doesn't bend but the aluminum fender, mounted to the unbending chassis, does bend....? Somehow the aluminum, affixed to a structure that is receiving bending/twisting forces but is not bending/twisting, is transferring that load to the aluminum fender..... Think this through a little bit. And don't go back to that PDR guy.
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