[Walked U]

Ask we speak im getting tint on my 335i. Im trying to turn off the auto dimming feature on the rear veiw mirror.

I checked the manual and says turn the clown nose, but Im not sure its working because the clown nose before in the 330's were bigger. (as pictured in the manual)

Thanks in advanced.

[canucklion]

what % of tint are you going for?

I've got 20% all around, and I can still see pretty well with the rearview mirror at night with the autodimming function on

[jmonier]

I think that turning the clown nose only works on the non-auto-dimming mirror. You certainly can't turn the (full-size) clown nose on my E46 auto-dimming mirror.

[Walked U]

Originally Posted by canucklion

what % of tint are you going for?

I've got 20% all around, and I can still see pretty well with the rearview mirror at night with the autodimming function on

Just got the car back. I have 40% on the front 2 windows 35% in the back two, and 20% in the rear.

If it doesnt become a big prob then I wont worry about it. Im just concerned because when I didnt have tint, and the rear mirror would dim I couldnt tell what car was behind me. I could still see it just couldnt pick out the make and model of the car.

[Minipuck V 2.0]

my opinion with a 17% rear tint is that light still comes through extremely well. i tinted my fronts a little lights so looking in the side mirrors, lights comes through a lot more, if anything i tried to let more light come through so my side mirrors would dim as well.

if you really wanted to, put a tiny piece of eletrical tape over it so absolutely no light comes through. if you don't mind the little piece of tape that is.

i would encourage you to keep it.

[Walked U]

Heres some pictures of the car. Sry that the quality is crappy it was with my phone.

[canucklion]

you should be fine

Originally Posted by Walked U

Just got the car back. I have 40% on the front 2 windows 35% in the back two, and 20% in the rear.

If it doesnt become a big prob then I wont worry about it. Im just concerned because when I didnt have tint, and the rear mirror would dim I couldnt tell what car was behind me. I could still see it just couldnt pick out the make and model of the car.

[txusa03]

nice car and nice tint......

[Hawkshaw]

Originally Posted by canucklion

what % of tint are you going for?

I've got 20% all around, and I can still see pretty well with the rearview mirror at night with the autodimming function on

+1

My tint isn't that dark in the back though, it's 38%, but I've had no issues with vision at night through the auto-dimming rear view.

[Walked U]

Originally Posted by txusa03

nice car and nice tint......

Thanks alot. Didnt think you would be able to notice the tint as well due to the quality of the pics.

[bmwmike]

Originally Posted by Walked U

Ask we speak im getting tint on my 335i. Im trying to turn off the auto dimming feature on the rear veiw mirror.

I checked the manual and says turn the clown nose, but Im not sure its working because the clown nose before in the 330's were bigger. (as pictured in the manual)

Thanks in advanced.

I had checked with the dealer long time ago and they told me i couldn't adjust or turn off the auto dimming feature.

I don't know about the US cars but the cdn 335i's have polarized windows that get darker and lighter depending on the outside light. It's almost like auto window tinting but not extreme. Everyone comments when they look at my windows in the sunlight asking if i tinted them. I had them next to a bunch of E90 330's and you can tell a difference.

[canucklion]

I don't think polarized glass can change the shade, it restricts the amount of light passing through the glass, but it doesn't change the shade of the glass itself

Originally Posted by bmwmike

I don't know about the US cars but the cdn 335i's have polarized windows that get darker and lighter depending on the outside light. It's almost like auto window tinting but not extreme. Everyone comments when they look at my windows in the sunlight asking if i tinted them. I had them next to a bunch of E90 330's and you can tell a difference.

[txusa03]

Originally Posted by Walked U

Thanks alot. Didnt think you would be able to notice the tint as well due to the quality of the pics.

you are driving my dream car

[SoYank]

Originally Posted by canucklion

I don't think polarized glass can change the shade, it restricts the amount of light passing through the glass, but it doesn't change the shade of the glass itself

Light is made up of waves that are scattered and not oriented parallel to each others. If you could see the waves approaching you they might look like an asterisk (*) with some light oscillating along the |, some along the \, some along the / and some along the _. Polarization works by passing only lightwaves that are oscillating at a certain angle. For example, if the lightwaves going up and down (|) is passed through polarization material oriented up and down, those lightwaves will pass. But if the lightwaves are moving at an angle to the polarization material they will be blocked; the closer the angle gets to 90°, the more the light is blocked. The more light you block the darker the shade.

If you took two pieces of polarizing material and oriented them at 90° to each other, no light would pass because the first would only allow light oriented, say, verticallly ("|") to pass and the second piece will only pass light oriented horizontally ("_").

What would be really useful, albeit extremely expensive, would be windows with the photogrey coating they put in sunglasses that change when you go from inside to outside and darken with higher intensity of sunlight (less on cloudy days, more on sunny days, clear at night). In essence, automatic window tinting.

[Walked U]

There that should be a bit better for quality of the pictures I resized them. They are a bit smaller but at least you can see detail now.

[shadowcoder]

Originally Posted by Walked U

There that should be a bit better for quality of the pictures I resized them. They are a bit smaller but at least you can see detail now.

Car looks nice with the tints However if I were you, instead of
worrying about the mirror, I would worry more about the 2 reasons you are
already giving the cops to stop you and make your day a bad one - not
having a front plate and having 40% tints on the front.

[Walked U]

Originally Posted by shadowcoder

Car looks nice with the tints However if I were you, instead of
worrying about the mirror, I would worry more about the 2 reasons you are
already giving the cops to stop you and make your day a bad one - not
having a front plate and having 40% tints on the front.

40% in the front arent that far away from stock windows.

Also everyone in my area doesnt have a front plate. Ive got a warning once about not having one but that was by the PCH and I was kinda speeding. ( in my jetta )

[PiperD]

Originally Posted by SoYank

...But if the lightwaves are moving at an angle to the polarization material they will be blocked; the closer the angle gets to 90°, the more the light is blocked. The more light you block the darker the shade.

All the recreational fishermen in the audience who've ever sported polarized fishing glasses should understand a practical application of this technology

Originally Posted by canucklion

I don't think polarized glass can change the shade, it restricts the amount of light passing through the glass, but it doesn't change the shade of the glass itself

A tint is actually a dark coloured film, but the absence of reflected light can have a similar effect in the situation bmwmike wrote about. If less light is entering the cabin due to polarized glass, then from the outside the interior will appear to be less lit. From far enough away one could draw the conclusion that the windows are tinted.

[canucklion]

thanks buddy for a well explained post

Originally Posted by SoYank

Light is made up of waves that are scattered and not oriented parallel to each others. If you could see the waves approaching you they might look like an asterisk (*) with some light oscillating along the |, some along the \, some along the / and some along the _. Polarization works by passing only lightwaves that are oscillating at a certain angle. For example, if the lightwaves going up and down (|) is passed through polarization material oriented up and down, those lightwaves will pass. But if the lightwaves are moving at an angle to the polarization material they will be blocked; the closer the angle gets to 90°, the more the light is blocked. The more light you block the darker the shade.

If you took two pieces of polarizing material and oriented them at 90° to each other, no light would pass because the first would only allow light oriented, say, verticallly ("|") to pass and the second piece will only pass light oriented horizontally ("_").

What would be really useful, albeit extremely expensive, would be windows with the photogrey coating they put in sunglasses that change when you go from inside to outside and darken with higher intensity of sunlight (less on cloudy days, more on sunny days, clear at night). In essence, automatic window tinting.

[Two Sheds]

I thought the auto dimming mirror worked by having one light sensor facing forward and one facing backwards. It would compare the level of light at the front to the level at the back and dim the mirror accordingly. Hence in daylight it doesn't dim even though it is bright behind you.

If this is the case then if you tint your windows then you would be reducing the amount of light entering the light sensor from the back and so the mirror would not dim as much, in effect automatically compensating for the rear window tint.

[Mr. BMW]

Originally Posted by Walked U

Ask we speak im getting tint on my 335i. Im trying to turn off the auto dimming feature on the rear veiw mirror.

I checked the manual and says turn the clown nose, but Im not sure its working because the clown nose before in the 330's were bigger. (as pictured in the manual)

Thanks in advanced.

My back window is a little darker than legal and I have a hard time seeing anything behind me at night.

There is a sensor in the rearview mirror. It's the little dot you see in the middle of the mirror. You could cover this dot with something and that would disable the auto dimming feature.

As someone else mention, the clown nose only turns if you don't have the Auto-dim feature.

[PiperD]

Originally Posted by Mr. BMW

There is a sensor in the rearview mirror. It's the little dot you see in the middle of the mirror. You could cover this dot with something and that would disable the auto dimming feature.

I think it also uses an upward facing sensor in the rain sensor housing, to detect the ambient light level.

Regardless your fix should still work