Rear Window Dots?

vdubturbo · 04-07-2013, 06:49 PM

Anyone ever seen this before? I noticed it when I washed the car today. Looks like the rear window is delaminating. Or is this "normal"?

Sorry for the ginormous pic...

m6pwr · 04-07-2013, 06:53 PM

Some better informed than me may disagree but I think that is normal. Depends maybe on the light.

MRC123 · 04-07-2013, 08:53 PM

Normal... You will notice this on all bmw or mb vehicles

Akkord29 · 04-07-2013, 09:15 PM

I just noticed the same thing last week, forgot to look it up. Glad to see I'm not the only one who has it.

slownfast · 04-08-2013, 12:18 AM

I just checked mine, I think it is normal

.

remmib · 04-08-2013, 05:08 AM

It's normal, and it's easy to see when you wear polarized sunglasses.

martin mustang · 04-08-2013, 07:15 AM

Quote:

Originally Posted by remmib

It's normal, and it's easy to see when you wear polarized sunglasses.

Yep it is down to Polarized lenses, with my sunglasses I see dots in other cars too, once removed they out.

The X Men · 04-08-2013, 08:45 AM

That is normal with all tempered glass, the heat-tempering process cause light to reflect differently in the dotted areas.

Screamin · 04-08-2013, 08:28 PM

Normal. You don't notice it as much with tint and it looks sharp.

ebby422 · 04-15-2013, 08:41 PM

Quote:

Originally Posted by MRC123

Normal... You will notice this on all bmw or mb vehicles

why is this normal on higher end vehicles??

JNoSol · 04-18-2013, 06:10 PM

Quote:

Originally Posted by ebby422

why is this normal on higher end vehicles??

It's not just on high end vehicles, even Scion got them. It might has something do to with the polarization process of the glass since it's a perfect grid. I tinted my windows at 20%, they are not noticeable.

The X Men · 04-20-2013, 09:34 AM

Quote:

Originally Posted by JNoSol

It's not just on high end vehicles, even Scion got them. It might has something do to with the polarization process of the glass since it's a perfect grid. I tinted my windows at 20%, they are not noticeable.

Automotive glass are not polarized.

Zaman · 04-20-2013, 09:50 AM

Quote:

Originally Posted by The X Men

Automotive glass are not polarized.

It is not polarization. I guess that happens during the production process. e.g. different cooling rate when the glass is moving on conveyors. It is not limited to car glasses as well. When you wear polarized sunglasses you see them on many glasses around.
I will look into it more. (my geek side

)

JNoSol · 04-21-2013, 09:45 AM

Quote:

Originally Posted by The X Men

Automotive glass are not polarized.

Hah. Good to know, but that makes sense. I might be mixing up polarization and UV treatment.

Why are those mBENz S-Class glass purple, and they look really strange when viewed with polarized sun glasses?

The X Men · 04-21-2013, 02:22 PM

Not sure why the S-class' glass is purple but the dots from most automotive glass are from the tempering process.

dmontg · 04-21-2013, 05:07 PM

to OP,

Did you take the photo thru your sunglasses?

Thx!

The X Men · 04-21-2013, 05:43 PM

Quote:

Originally Posted by dmontg

to OP,

Did you take the photo thru your sunglasses?

Thx!

Are you asking him if he put a polarized sunglasses in front of his camera lens?

vdubturbo · 04-21-2013, 11:02 PM

Haha sorry, i was on travel and haven't been online much.

But no, that was just a "naked eye" pic from my iPhone. Ironically, the next day driving into work I was behind a Scion xC that had the same dots in the window. I kind of figured it was a by-product of manufacturing, but I also figured in a higher end vehicle that it might not be tolerated from a quality perspective.

One thing I have learned though, is it's not even worth talking to the dealer about. They'll just give me some made up story that the dots are actually solar panels that charge the car... you know, part of Efficient Dynamics :P

lindros2 · 04-22-2013, 03:25 PM

Quote:

Originally Posted by The X Men

Not sure why the S-class' glass is purple but the dots from most automotive glass are from the tempering process.

Purple glass is the solar coated windshield.

Mercedes also offered (offers?) the blue-hued glass, which is different.

turbolag · 04-23-2013, 08:30 PM

A neighbour's Focus hatchback also had these, so it's pretty normal.

I don't wear glasses or contacts.

04-07-2013, 06:49 PM	#1
vdubturbo Second Lieutenant 42 Rep 299 Posts Drives: E90, E36, 997 Join Date: Nov 2011 Location: ATL iTrader: (0)	Rear Window Dots? Anyone ever seen this before? I noticed it when I washed the car today. Looks like the rear window is delaminating. Or is this "normal"? Sorry for the ginormous pic... Attached Images
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04-07-2013, 06:53 PM	#2
m6pwr First Lieutenant 38 Rep 374 Posts Drives: '14 335i M sport Join Date: Oct 2008 Location: San Diego, CA iTrader: (0)	Some better informed than me may disagree but I think that is normal. Depends maybe on the light. __________________ '14 328d, '13 M3 ZCP, '12 535i, '11 335d, '09 Z4 DINAN Stage II, '05 330i ZHP, '05 M3 ZCP, '02 M3, '91 328i, '90 535i, '88 528e, '88 M5, '87 M6, '95 Z3, 95 M3, '93 M5, '87 325e, '89 535i, '86 635i, '73 Bavaria.
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04-07-2013, 08:53 PM	#3
MRC123 New Member 0 Rep 12 Posts Drives: TRUCK Join Date: May 2012 Location: Chalfont iTrader: (0)	Normal... You will notice this on all bmw or mb vehicles
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04-07-2013, 09:15 PM	#4
Akkord29 Lieutenant 57 Rep 483 Posts Drives: F80, G20, E46 Join Date: Jan 2013 Location: Florida iTrader: (7)	I just noticed the same thing last week, forgot to look it up. Glad to see I'm not the only one who has it.
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04-08-2013, 12:18 AM	#5
slownfast Lieutenant 44 Rep 540 Posts Drives: 2013 528i Xdrive Join Date: Nov 2012 Location: Somewhere iTrader: (0)	I just checked mine, I think it is normal .
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04-08-2013, 05:08 AM	#6
remmib General 1568 Rep 29,202 Posts Drives: 2013 F10 520d M-Sport Join Date: Feb 2006 Location: Norway iTrader: (0)	It's normal, and it's easy to see when you wear polarized sunglasses. __________________ F10 520d M-Sport Alpine White \| HRE P43SC 20x9+20x11 \| Michelin PSS 255/35+295/30 \| KW V3 Coilover \| M5 Front Sway Bar + M550d Rear Sway Bar \| 3DDesign Front Lip \| BMW M Performance CF Spoiler \| BMW M Performance Diffuser \| BMW M Performance Black Grills \| BMW M Performance Pedals \|
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04-08-2013, 08:45 AM	#8
The X Men Colonel 99 Rep 2,323 Posts Drives: 2013 X3 35i Join Date: Mar 2012 Location: MA iTrader: (0)	That is normal with all tempered glass, the heat-tempering process cause light to reflect differently in the dotted areas.
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04-08-2013, 08:28 PM	#9
Screamin Enlisted Member 0 Rep 31 Posts Drives: 2012 528i xDrive Join Date: Mar 2013 Location: Detroit iTrader: (0)	Normal. You don't notice it as much with tint and it looks sharp. __________________ '12 F10 528i xDrive (Jet Black) '11 E71 X6 xDrive35i (Black Sapphire Metallic) - Gone '06 E60 530xi (Titanium Silver Metallic) - Gone '97 E39 528i (Arctic Silver Metallic) - Gone
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04-21-2013, 02:22 PM	#15
The X Men Colonel 99 Rep 2,323 Posts Drives: 2013 X3 35i Join Date: Mar 2012 Location: MA iTrader: (0)	Not sure why the S-class' glass is purple but the dots from most automotive glass are from the tempering process.
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04-21-2013, 05:07 PM	#16
dmontg Private 3 Rep 62 Posts Drives: 2013 MSport 550i Join Date: Sep 2012 Location: Atlanta, GA iTrader: (0)	to OP, Did you take the photo thru your sunglasses? Thx! __________________ Best regards, Don M
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04-21-2013, 11:02 PM	#18
vdubturbo Second Lieutenant 42 Rep 299 Posts Drives: E90, E36, 997 Join Date: Nov 2011 Location: ATL iTrader: (0)	Haha sorry, i was on travel and haven't been online much. But no, that was just a "naked eye" pic from my iPhone. Ironically, the next day driving into work I was behind a Scion xC that had the same dots in the window. I kind of figured it was a by-product of manufacturing, but I also figured in a higher end vehicle that it might not be tolerated from a quality perspective. One thing I have learned though, is it's not even worth talking to the dealer about. They'll just give me some made up story that the dots are actually solar panels that charge the car... you know, part of Efficient Dynamics :P
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04-23-2013, 08:30 PM	#20
turbolag is nonexistent with N/A 21 Rep 1,126 Posts Drives: . Join Date: Mar 2013 Location: . iTrader: (0)	A neighbour's Focus hatchback also had these, so it's pretty normal. I don't wear glasses or contacts.
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