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X3 G01 (2018 - current)
The third generation X3 starts production in August of 2017 and will include the new X3 M40i top of the line performance model.

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  #1  
Old 11-25-2018, 05:20 PM
gbtr6 gbtr6 is offline
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Staining on black trim on X3

My sons X3 has Ďstainingí on the blackout trim around the windows. I thought I had gotten some of it off with a fine polishing paste. Not so. Anyone else have this? Solutions? I imagine you could replace all the trim, but that would prove costly.

Perry
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  #2  
Old 11-28-2018, 07:35 PM
Noeh Noeh is offline
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Is that just water spot / road salt? I would take it to a detailer and have them clay/compound/polish/seal the whole thing.
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Old 11-28-2018, 09:36 PM
spazzz spazzz is offline
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Pick up some Meguiars Ultimate Compound from Oreillys or Walmart ,etc.
Grab a couple microfiber applicator pads.
Do a small spot on the pillar with a dime size dot of UC 9n the pad.
Work a size maybe 1 inch by 2 and stay with that spot. Don't go hog wild smearing over the pillar
Wipe off clear oily residue with a microfiber towel and repeat.
That will tell you if it can be polished out.
You can't break what is broke and that bottle of compound should be in everyone's arsenal.
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Old 11-30-2018, 02:14 PM
wavewuver wavewuver is offline
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To me it looks like some sort of solution was sprayed on and never rinsed or wiped off. Never saw anything like it. Automatic car wash final wax??????

Straight ammonia might clean it up. Tread carefully and just do a small spot to test.

I always use compound as a last resort as it is nothing more than ultra fine sandpaper.

Good luck and hope you let us know how you make out.
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Old 11-30-2018, 02:35 PM
Londonjl Londonjl is offline
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Staining on black trim on X3

Nearly every bmw I see in London has that. Itís the chemicals they use for cleaning wheels, the car wash spray it onto the whole car. In a hot day it stains.

So Iím told. Either way BMW wouldnít replace my trim under warranty. Recommend I take to a detailer to try polishing out.

The only way to resolve it 100% is to replace and make sure you donít use any chemicals on the car in future. Thatís why my 435 looks like crap. Itís thousands to replace it so I will also be trying the polish.

Welcome to the crappy world of M Sport trim.

Last edited by Londonjl; 12-02-2018 at 05:59 AM.
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Old 05-09-2019, 11:32 AM
Londonjl Londonjl is offline
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Does anyone have any feedback on these suggestions? Iím just now getting round to mine and wondered if anyone had any luck.

Just found out I canít replace the F33 trim without replacing all the seals as well...
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Old 05-09-2019, 02:07 PM
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Doug Huffman Doug Huffman is online now
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It is a common problem across many platforms. I fixed mine with common household stuff, probably melamine foam, as I eschew horribly expensive branded stuff.
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Last edited by Doug Huffman; 05-09-2019 at 02:09 PM.
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Old 05-10-2019, 10:37 AM
Londonjl Londonjl is offline
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Quote:
Originally Posted by Doug Huffman View Post
It is a common problem across many platforms. I fixed mine with common household stuff, probably melamine foam, as I eschew horribly expensive branded stuff.


Iíd never heard of that until you mentioned it. Itís so trashed may as well give it a go.
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Old 05-16-2019, 07:26 AM
FXDL FXDL is offline
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Melamine foam is basically a fine grade of sand paper. I wouldn't use sand paper on a shiny surface.
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Old 05-16-2019, 07:46 AM
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Doug Huffman Doug Huffman is online now
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Quote:
Originally Posted by FXDL View Post
Melamine foam is basically a fine grade of sand paper. I wouldn't use sand paper on a shiny surface.
How is polish different from ďa fine grade of sand paper?Ē My black trim pieces are not shiny in the way the body paint shines.

I would have a better argument if I knew and could specify the equivalent grit and hardness of melamine foam. Suffice it to say that it appears to me to be very fine and not particularly hard.

Much of my understanding of abrasion was acquired for grinding and polishing mirrors and lenses.
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Scepticism and Animal Faith (1923)
Scepticism is the chastity of the intellect, and it is shameful to surrender it too soon or to the first comer: there is nobility in preserving it coolly and proudly through long youth, until at last, in the ripeness of instinct and discretion, it can be safely exchanged for fidelity and happiness.
(The Works of George Santayana p. 65)

Eschew eristical argumentation. I am responsible for what I write, not for your understanding of it.
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