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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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Old 01-08-2013, 03:35 PM
mikesevel mikesevel is offline
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Location: new braunfels, tx
Join Date: Jun 2011
Posts: 175
Mein Auto: 328i convertible '08
Removing scratches from aluminum trim moldings

I purchased a certified 328i retractable hardtop. I noticed three light scratches on the aluminum trim surrounding the hardtop. I cannot catch a fingernail on them so they are very minimal but they can be seen from a distance. I tried to remove them with 409 cleaner, Meguiar's Ultimate Compound and Quixx scratch remover liquid. No luck! I was thinking of something more aggressive like fine grit sandpaper or grade 0000 steel wool but i am afraid of making it worse than it is. Got any suggestions?
New Braunfels, TX
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Old 01-08-2013, 03:48 PM
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thekurgan thekurgan is online now
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Location: Sacramento, CA
Join Date: Jul 2007
Posts: 6,147
Mein Auto: S65B40 Powered
I would replace the trim.

08 E90M3 6MT Alpinweiss/Schwartz/BPMSport 91 oct tune/BPMSport feature coding/BMW Pedals/Ultimate Clutch Pedal/Dinan Exhaust/BMW Alcantara wheel/BMWCCA #453468/Rear Fog Switch
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Old 01-08-2013, 05:53 PM
roadkillrob roadkillrob is offline
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Location: Boston
Join Date: Aug 2006
Posts: 2,477
Mein Auto: 325CIC, 335CIC
I am guessing that it is coated in some type of clear coating and that is what is scratched, but getting more agressive with it will most likely go through the coating (like using steel wool) and ruin it. I would start with some wet dry sand paper, 1500 and if that doesn't work, drop down to 1000 or 800, then work your way back up with 1500 then 2000 to get the sandpaper lines out and polish, but be careful, the coating is probably fairly thin.

Just start with the cheapest easiest piece to replace in case you sand through it!
2008 335i Vert Montego/Saddle/Grey Poplar
2014 X3 35i Space Grey/Chestnut/Fineline Wave
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