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  #1  
Old 08-15-2016, 04:03 PM
burlovgolf burlovgolf is offline
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2006 Z4 3.0si Headlight lens

My headlight lens are very foggy. Are there available lens that won't corrode for my BMW.
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  #2  
Old 08-15-2016, 05:01 PM
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pungo pungo is offline
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No, they are not removable. Sand, polish and coat with clear paint, they'll look like new.
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  #3  
Old 08-17-2016, 05:45 AM
q3131a q3131a is offline
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Here is an overview of how to do it.

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  #4  
Old 08-17-2016, 07:34 AM
wdbii wdbii is offline
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I have a 2007 3.0si coupe. The lenses have a bit of a smoky tinge, is that normal or are they beginning to discolor?
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  #5  
Old 08-17-2016, 07:59 AM
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2006 Z4 3.0si Headlight lens

Buy a polishing kit. Takes one hour per side and is a 3 or 4 step process. Trust the process - will look worse after first step but will turn out beautiful. I did mine 3 years ago and still look like new (although garage kept). And DON'T spray with clear coat - that is a bad idea. Click image for larger version

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  #6  
Old 08-17-2016, 04:53 PM
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pungo pungo is offline
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Originally Posted by bwitherel View Post
And DON'T spray with clear coat - that is a bad idea.
Why is that?
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  #7  
Old 08-17-2016, 06:22 PM
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dc_wright dc_wright is offline
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Why is that?

Some of the solvents in the paint can attack the plastic and cause it to cloud or craze.
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  #8  
Old 08-18-2016, 07:46 PM
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pungo pungo is offline
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Some of the solvents in the paint can attack the plastic and cause it to cloud or craze.
Hmmm, had the body shop guy put clearcoat on a pair of 535i headlights when he was spraying someones bumper over 5 years ago and they still look like new. I hear marine spar varnish works well too. If don't put some type of protection on them, they will haze over again.
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  #9  
Old 08-19-2016, 05:48 AM
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bwitherel bwitherel is offline
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The clear coat will chip and scratch. The plastic headlights can be nicely buffed and maintained without any extra finishes.
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  #10  
Old 08-19-2016, 06:29 AM
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BostonB6 BostonB6 is offline
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Maguires makes a nice kit. Worked great. Check out this video. BTW - I would mask the painted surfaces that butt up to the headlights with painters tape to protect the paint. Take your time and don't shortcut the steps and time for each.

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  #11  
Old 08-19-2016, 07:23 AM
zangxx zangxx is offline
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The clear coat protects from further UV damage. A high quality clear like Cerakote (which is the same product used to paint mil-spec firearms) will resist most chipping/scratching. Why resurface only to let the sun have its way again? I'm all but certain that a properly applied quality clearcoat will solve the problem, not add to it.
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  #12  
Old 08-22-2016, 11:38 AM
q3131a q3131a is offline
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Originally Posted by q3131a View Post
Here is an overview of how to do it.

Video Above
Here is a 2 year update

https://www.instagram.com/p/BC7Ov-zOjLe/

Last edited by q3131a; 08-22-2016 at 11:39 AM.
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  #13  
Old 04-25-2019, 11:52 PM
mkhounani mkhounani is offline
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sanding does not work

Actually, I have sanded, used chemicals and bought all the best kind of product out there and none works. It last 4 months at best then it becomes even worst because the factory UV protection film will be gone and other ones are not even close. So, do it, but know that you have to keep doing it every so often.
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  #14  
Old 04-26-2019, 09:37 PM
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papitosabe papitosabe is offline
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You can use 2k clear coat and it will last for years if prepped correctly.
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