Impurities on the Rear bumper

RAIF414 · 10-06-2012, 10:55 AM

My problem is this I have built up contaminates on my rear bumper, They look like little rust spots(which can't be the case as the bumper is plastic). I have searched the forum and clay seemed to be the answer; however I have clayed the car from front to rear and only a minuscule amount came off of the rear bumper. The rest of the car looks awesome, and the paint is baby smooth, so I would like to rule out operator error on the clay bar. Question is what is the next step? Rubbing compound? wet Sanding?
Picture of only a couple of the spots

Picture of the rear deck lid after polishing

rjd598 · 10-06-2012, 11:35 AM

I would try some iron x first or more aggressive clay but you said let's rule out operator error. If iron x doesn't work then a polish would be required. Try meguiars 105>205

Z K · 10-06-2012, 11:48 AM

It looks like metal particles that are embedded into the paint.

As suggested try Iron X or more aggressive clay. Note that more aggressive clay will cause swirls so you may need to polish afterwards.

ddas · 10-06-2012, 12:25 PM

The bumper is plastic, but the embedded parts are metal. They rust over time. Use IronX and you should be fine.

MStar · 10-06-2012, 01:00 PM

Ironx..agressive compound... polish..

Honestly its a good idea to keep the rear section of this car clean it sees the most build up of contaminants

ddas · 10-06-2012, 08:41 PM

Quote:

Originally Posted by Yolkster

Ironx..agressive compound... polish..

Honestly its a good idea to keep the rear section of this car clean it sees the most build up of contaminants

Usually embedded particles like that are from the car being shipped on a truck or railway backwards.

RAIF414 · 10-11-2012, 07:28 AM

Thanks for all the replies, I am going to get some IronX and then post pictures after the rear is polished.

THE TECH · 10-11-2012, 08:50 AM

It happens more often when you run with high flow cats or catless.

Johndong888 · 10-16-2012, 11:23 AM

Everyone else is pretty spot on. IronX plus a good polisher setup should clear it up.

MrD1198 · 11-17-2012, 01:53 AM

I've got these rust spots on the rear bumper of my 2 month old AW M3. Were you able to remove them with the above suggestions?

SDPRT · 01-03-2013, 05:03 PM

Quote:

Originally Posted by THE TECH

It happens more often when you run with high flow cats or catless.

Happening to me Matt so clay it?

FIPAD · 01-04-2013, 10:45 AM

have you heard of IronX?...give it a try...it should take care of it

MrD1198 · 01-05-2013, 09:00 PM

Clay bar took mine out.

ChrisK · 02-13-2013, 05:38 PM

I have this crap all over the back of my car. Where is it coming from? My exhaust is stock.

Which Iron-X works the best?

http://www.autogeek.net/carpro-iron-x-cleaner.html

ChrisK · 02-13-2013, 05:44 PM

Check out this thread:

http://www.e90post.com/forums/showth...ghlight=iron+x

Z K · 02-13-2013, 05:56 PM

I have the regular Iron X spray and the Iron X Snow Soap.

Regular Iron X works well for removing heavier iron deposits but it gets expensive if you want to use it regularly. You use up half a bottle (250mL) on one car, use it twice and you're out. Iron X is not a replacement for claying so some embedded stuff you still need to clay out.

The Snow Soap is nice in that you can wash the car with it. You use very little per wash. It pretty much saves you a step because you don't need to wash then iron x and then wash again. But it is not as strong as regular Iron X and it will strip wax off the car so you will need to re-apply that.

Do not use Iron X on bare metal - bare aluminum, iron, steel etc. It will eat and pit the surface!

ChrisK · 02-13-2013, 08:52 PM

Good info Thx!

10-06-2012, 10:55 AM	#1
RAIF414 New Member Drives: 2008 E92 Join Date: Aug 2011 Location: Watertown NY Posts: 10 iTrader: (0)	Impurities on the Rear bumper My problem is this I have built up contaminates on my rear bumper, They look like little rust spots(which can't be the case as the bumper is plastic). I have searched the forum and clay seemed to be the answer; however I have clayed the car from front to rear and only a minuscule amount came off of the rear bumper. The rest of the car looks awesome, and the paint is baby smooth, so I would like to rule out operator error on the clay bar. Question is what is the next step? Rubbing compound? wet Sanding? Picture of only a couple of the spots Picture of the rear deck lid after polishing
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10-06-2012, 11:35 AM	#2
rjd598 Brigadier General Drives: 10' M3 Join Date: Jan 2009 Location: San Diego,CA Posts: 3,176 iTrader: (1) Garage List 2010 BMW M3 [4.50] 2000 Nissan Maxima SE [0.00]	I would try some iron x first or more aggressive clay but you said let's rule out operator error. If iron x doesn't work then a polish would be required. Try meguiars 105>205 __________________ 10 E90 M3/dct/ztp/zpp/heated seats/eps/19'/iPod retired- 08 535i/nav/prem./L7/ipod retired- 06 325i/nav/prem./sat/xenons/style 128

10-11-2012, 08:50 AM	#8
THE TECH BimmerPost Supporting Vendor Drives: BPMsport 2012 E92 M3 Join Date: Jun 2011 Location: Kansas Posts: 11,884 iTrader: (39)	It happens more often when you run with high flow cats or catless. __________________ Check us out on Facebook at BPMsportLabs

10-16-2012, 11:23 AM	#9
Johndong888 John Drives: '12 AW/FR M3 Join Date: Feb 2008 Location: Cherry Hill, NJ Posts: 614 iTrader: (8)	Everyone else is pretty spot on. IronX plus a good polisher setup should clear it up. __________________ Current - 2012 AW/FR E92 M3 - DCT w EDC, ZPP w Tech, Apps, Enhanced Sound, SAT. Mods - Piano Black, Euro Visors, OEM Performance CF Spoiler + Grills + Pedals, IND Gloss Blk Pkg, Lux V3, Arkym CF Front Lip, 19" HRE P40 Sold - 2008 BSM/Black E92 335i - Step, Premium, Sports, Logic7, Comfort, Navi, SAT, Alum.

01-04-2013, 10:45 AM	#12
FIPAD New Member Drives: BMW 328i Join Date: May 2012 Location: Sarasota Posts: 13 iTrader: (0)	have you heard of IronX?...give it a try...it should take care of it __________________

10-06-2012, 11:48 AM	#3
Z K Major Drives: E90 M3 Join Date: Jul 2011 Location: San Francisco Posts: 1,240 iTrader: (2) Garage List 2008 BMW E90 M3 [0.00]	It looks like metal particles that are embedded into the paint. As suggested try Iron X or more aggressive clay. Note that more aggressive clay will cause swirls so you may need to polish afterwards.

10-06-2012, 12:25 PM	#4
ddas New Member Drives: bavaria Join Date: Sep 2012 Location: Atlanta Posts: 26 iTrader: (0)	The bumper is plastic, but the embedded parts are metal. They rust over time. Use IronX and you should be fine.

10-06-2012, 01:00 PM	#5
MStar Banned Drives: e92 M3 Join Date: Oct 2012 Location: Here and there Posts: 290 iTrader: (0)	Ironx..agressive compound... polish.. Honestly its a good idea to keep the rear section of this car clean it sees the most build up of contaminants

10-11-2012, 07:28 AM	#7
RAIF414 New Member Drives: 2008 E92 Join Date: Aug 2011 Location: Watertown NY Posts: 10 iTrader: (0)	Thanks for all the replies, I am going to get some IronX and then post pictures after the rear is polished.

11-17-2012, 01:53 AM	#10
MrD1198 Enlisted Member Drives: 2013 E92 M3/2009 Ducati 1198 Join Date: Aug 2011 Location: Germany Posts: 42 iTrader: (0)	I've got these rust spots on the rear bumper of my 2 month old AW M3. Were you able to remove them with the above suggestions?

01-05-2013, 09:00 PM	#13
MrD1198 Enlisted Member Drives: 2013 E92 M3/2009 Ducati 1198 Join Date: Aug 2011 Location: Germany Posts: 42 iTrader: (0)	Clay bar took mine out.

02-13-2013, 05:38 PM	#14
ChrisK Brigadier General Drives: 2011 E92 M3 Join Date: Jun 2007 Location: IL Posts: 4,624 iTrader: (4)	I have this crap all over the back of my car. Where is it coming from? My exhaust is stock. Which Iron-X works the best? http://www.autogeek.net/carpro-iron-x-cleaner.html __________________ 2011 E92 M3: AW/BLK • DCT Europäische Lieferung am 6. August 2010

02-13-2013, 05:44 PM	#15
ChrisK Brigadier General Drives: 2011 E92 M3 Join Date: Jun 2007 Location: IL Posts: 4,624 iTrader: (4)	Check out this thread: http://www.e90post.com/forums/showth...ghlight=iron+x __________________ 2011 E92 M3: AW/BLK • DCT Europäische Lieferung am 6. August 2010

02-13-2013, 05:56 PM	#16
Z K Major Drives: E90 M3 Join Date: Jul 2011 Location: San Francisco Posts: 1,240 iTrader: (2) Garage List 2008 BMW E90 M3 [0.00]	I have the regular Iron X spray and the Iron X Snow Soap. Regular Iron X works well for removing heavier iron deposits but it gets expensive if you want to use it regularly. You use up half a bottle (250mL) on one car, use it twice and you're out. Iron X is not a replacement for claying so some embedded stuff you still need to clay out. The Snow Soap is nice in that you can wash the car with it. You use very little per wash. It pretty much saves you a step because you don't need to wash then iron x and then wash again. But it is not as strong as regular Iron X and it will strip wax off the car so you will need to re-apply that. Do not use Iron X on bare metal - bare aluminum, iron, steel etc. It will eat and pit the surface!

02-13-2013, 08:52 PM	#17
ChrisK Brigadier General Drives: 2011 E92 M3 Join Date: Jun 2007 Location: IL Posts: 4,624 iTrader: (4)	Good info Thx! __________________ 2011 E92 M3: AW/BLK • DCT Europäische Lieferung am 6. August 2010

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