F30 328i scratch on rear bumper

felixfktung · 03-21-2017, 06:33 AM

Hi All,

I would like to have some advice on a car scratch I noticed on the rear bumper a couple of days ago. A photo has been attached.

When I first saw it on an overcast day I thought it is a bit of bird poop. So I got my spray wax out, spray a little on it and tried to lightly break it up with my fingers. But nothing happened. When I took a closer look I found out someone had actually scratched the right side of the rear bumper, then tried to cover it up by putting either liquid paper(white out) or white paint on it. Needless to say I felt gutted.

The longer of the 2 touched up area is about 5cm long. The problem is I'm not sure what was used to cover the scratch. Any advice on what I should use to rub off the touched up area would be much appreciated.

I do have some BMW alpine white touch up paint and clear coat and would like to have a go at patching it up myself. If I'm satisfied with the result then that would save a few hundred dollars by not going to a detailer.

Thanks
Felix

Billfitz · 03-21-2017, 06:54 AM

http://f30.bimmerpost.com/forums/sho....php?t=1356961

jparnes1 · 03-21-2017, 07:32 AM

Post up a pic with the white crap removed so I can see what the actually defect looks like.

BEM-S4 · 03-21-2017, 08:09 AM

Try dr color
Chip

felixfktung · 03-21-2017, 09:27 AM

Sorry, I'm a newbie. But before wet sanding it as billfitz has suggested, should I try to use anything stronger first to see if it can be rubbed off?

jparnes1 · 03-21-2017, 11:26 AM

Quote:

Originally Posted by felixfktung

Sorry, I'm a newbie. But before wet sanding it as billfitz has suggested, should I try to use anything stronger first to see if it can be rubbed off?

No this isn't a mild defect. It's probably through to the plastic and shows black. To make it look right it needs sanding, polishing and painting by a professional. If you want to get off cheaper, you can do it yourself but the paint is going to look led than optimal. Depends what your expectations are. Do you know how and have the equipment to sand and polish?

felixfktung · 03-21-2017, 06:28 PM

I don't have an orbital sander, I intend to wetsand by hand.
Haven't wetsand before but have watched a few YouTube videos on how it's done.

felixfktung · 03-21-2017, 11:20 PM

Don't think it's liquid paper. I tried using mineral turpentine and a microfiber to rub on the painted on area with no success.

eluded · 03-22-2017, 12:33 AM

I brought mine in to the BMW for it's free maintenance and got a nice scratch that's even worse than yours. Trying to get the car totaled. Not sure I'm going to succeed.

CliffClavin · 03-22-2017, 10:17 AM

My advice to you is to stop and not mess with it any more. Take it to a detailer that specializes in touch up repairs. It won't look perfect and you need to temper your expectations. If nothing short of perfect is what you expect, get it repainted.

03-21-2017, 06:33 AM	#1
felixfktung New Member 0 Rep 16 Posts Drives: BMW F30 328i Join Date: Mar 2017 Location: Victoria iTrader: (0)	F30 328i scratch on rear bumper Hi All, I would like to have some advice on a car scratch I noticed on the rear bumper a couple of days ago. A photo has been attached. When I first saw it on an overcast day I thought it is a bit of bird poop. So I got my spray wax out, spray a little on it and tried to lightly break it up with my fingers. But nothing happened. When I took a closer look I found out someone had actually scratched the right side of the rear bumper, then tried to cover it up by putting either liquid paper(white out) or white paint on it. Needless to say I felt gutted. The longer of the 2 touched up area is about 5cm long. The problem is I'm not sure what was used to cover the scratch. Any advice on what I should use to rub off the touched up area would be much appreciated. I do have some BMW alpine white touch up paint and clear coat and would like to have a go at patching it up myself. If I'm satisfied with the result then that would save a few hundred dollars by not going to a detailer. Thanks Felix Attached Images
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03-21-2017, 06:54 AM	#2
Billfitz Lieutenant General 8243 Rep 16,083 Posts Drives: '15 328iX GT Join Date: Jan 2015 Location: New Hampshire iTrader: (0)	http://f30.bimmerpost.com/forums/sho....php?t=1356961
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03-21-2017, 07:32 AM	#3
jparnes1 Colonel 245 Rep 2,387 Posts Drives: 2016 340i, 2012 Z4 35i Join Date: Jan 2010 Location: NY iTrader: (1)	Post up a pic with the white crap removed so I can see what the actually defect looks like. __________________ 2016 340i XDrive, EBII/black, 6 MT, M Sport, Track Handling, Cold Weather, Tech, Lighting, Driver Assistance Plus. 2012 Z4 35i, ED 2/24/2012, Melbourne Red Metallic, Black Leather, Carbon Trim, 6MT, M Sport, CW, PP, PS, NAV, CA.
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03-21-2017, 08:09 AM	#4
BEM-S4 Major General 4516 Rep 8,942 Posts Drives: Dinan M235, Dinan Sport Wagon Join Date: Oct 2012 Location: Philadelphia iTrader: (5)	Try dr color Chip __________________ 2022 Macan S 2016 F31 328i xDrive Sport Wagon 2006 E46 330ci ZHP Convertible
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03-21-2017, 09:27 AM	#5
felixfktung New Member 0 Rep 16 Posts Drives: BMW F30 328i Join Date: Mar 2017 Location: Victoria iTrader: (0)	Sorry, I'm a newbie. But before wet sanding it as billfitz has suggested, should I try to use anything stronger first to see if it can be rubbed off?
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03-21-2017, 06:28 PM	#7
felixfktung New Member 0 Rep 16 Posts Drives: BMW F30 328i Join Date: Mar 2017 Location: Victoria iTrader: (0)	I don't have an orbital sander, I intend to wetsand by hand. Haven't wetsand before but have watched a few YouTube videos on how it's done.
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03-21-2017, 11:20 PM	#8
felixfktung New Member 0 Rep 16 Posts Drives: BMW F30 328i Join Date: Mar 2017 Location: Victoria iTrader: (0)	Don't think it's liquid paper. I tried using mineral turpentine and a microfiber to rub on the painted on area with no success.
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03-22-2017, 12:33 AM	#9
eluded 2JZ-GTE 3042 Rep 3,996 Posts Drives: 340 6MT, 50e, others Join Date: Nov 2015 Location: Sofia iTrader: (0)	I brought mine in to the BMW for it's free maintenance and got a nice scratch that's even worse than yours. Trying to get the car totaled. Not sure I'm going to succeed. __________________ A man who views the world the same at 50 as he did at 20 has wasted 30 years of his life.
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03-22-2017, 10:17 AM	#10
CliffClavin New Member 2 Rep 7 Posts Drives: 2016 328i Join Date: Feb 2017 Location: DMV iTrader: (0)	My advice to you is to stop and not mess with it any more. Take it to a detailer that specializes in touch up repairs. It won't look perfect and you need to temper your expectations. If nothing short of perfect is what you expect, get it repainted.
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