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Kreuger_ · 03-15-2021, 09:51 AM

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mjn77 · 03-15-2021, 04:57 PM

Have it cut out, fresh metal welded in.

skyliner · 03-15-2021, 05:42 PM

It's a bit hard to tell from your photo, but it may just be that the paint has been scraped off allowing a small amount of surface rust to accumulate.

If that's the case, you can fix this by properly preparing the surface and painting the damaged edge. Given its location, if is done carefully, your touch-up may not even show. If the rest of the car looks great, or you are not a handy, detail-oriented person, consider having it done professionally.

Mosaud1998 · 03-17-2021, 08:15 PM

That's the first time I've seen rust on an E90.

E46s is a different story.

IllSic_Design · 03-17-2021, 08:20 PM

That looks like the inside of the arch, like a tire/wheel has rubbed on it. It looks like it's just surface rust, you should be able to remove any rust with an scotch brite pad or something similar, then just treat it with some rust prevention stuff or even spray some self etching primer and then a top coat to seal it.

03-15-2021, 09:51 AM	#1
Kreuger_ Enlisted Member 0 Rep 41 Posts Drives: - Join Date: Feb 2019 Location: - iTrader: (0)	Delete Delete Last edited by Kreuger_; 09-09-2021 at 05:46 AM..
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03-15-2021, 04:57 PM	#2
mjn77 Lieutenant Colonel 1073 Rep 1,956 Posts Drives: E90 M3 LCI Jerez Black Join Date: Apr 2015 Location: Herts, UK iTrader: (2) Garage List 2011 BMW M3 [0.00]	Have it cut out, fresh metal welded in. __________________ // E90 M3 LCI DCT in Jerez Black with Fox Red Leather // Alcantara Trim // ST XTA Coilovers // 1.75 Exhaust Mod // Pinnacle Undertray // @jerez.black.e90.m3 // Euro Alpine Road Trips 2014 2016 2017 2018 2019 2022
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03-15-2021, 05:42 PM	#3
skyliner Private First Class 12 Rep 165 Posts Drives: E93 Join Date: Jun 2007 Location: Philadelphia iTrader: (4)	hold on a minute It's a bit hard to tell from your photo, but it may just be that the paint has been scraped off allowing a small amount of surface rust to accumulate. If that's the case, you can fix this by properly preparing the surface and painting the damaged edge. Given its location, if is done carefully, your touch-up may not even show. If the rest of the car looks great, or you are not a handy, detail-oriented person, consider having it done professionally.
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03-17-2021, 08:15 PM	#4
Mosaud1998 Colonel 3922 Rep 2,629 Posts Drives: 2019 BMW 540 Join Date: Nov 2019 Location: Suburb of Chicago iTrader: (0) Garage List 2019 BMW 540 [0.00]	That's the first time I've seen rust on an E90. E46s is a different story.
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03-17-2021, 08:20 PM	#5
IllSic_Design Colonel 2123 Rep 2,758 Posts Drives: 09 E92 335i Join Date: Jun 2016 Location: Northern California iTrader: (1)	That looks like the inside of the arch, like a tire/wheel has rubbed on it. It looks like it's just surface rust, you should be able to remove any rust with an scotch brite pad or something similar, then just treat it with some rust prevention stuff or even spray some self etching primer and then a top coat to seal it.
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