BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Wash, Wax, Detail, Cosmetic Maintenance & Repairs
 
Post Reply
 
Thread Tools Search this Thread
      10-06-2012, 10:55 AM   #1
RAIF414
New Member
United_States
1
Rep
10
Posts

Drives: 2008 E92
Join Date: Aug 2011
Location: Watertown NY

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
Appreciate 0
      10-06-2012, 11:35 AM   #2
rjd598
Banned
United_States
1770
Rep
6,696
Posts

Drives: F30 340i
Join Date: Jan 2009
Location: San Diego,CA

iTrader: (2)

Garage List
2016 BMW 340i  [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
Appreciate 0
      10-06-2012, 11:48 AM   #3
Z K
Major General
Z K's Avatar
1886
Rep
5,504
Posts

Drives: E90 M3, G20 M340i
Join Date: Jul 2011
Location: San Francisco

iTrader: (3)

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.
Appreciate 0
      10-06-2012, 12:25 PM   #4
ddas
Second Lieutenant
ddas's Avatar
210
Rep
289
Posts

Drives: 2018 Daytona Violet M3
Join Date: Sep 2012
Location: Atlanta

iTrader: (0)

The bumper is plastic, but the embedded parts are metal. They rust over time. Use IronX and you should be fine.
Appreciate 0
      10-06-2012, 01:00 PM   #5
MStar
Banned
No_Country
6
Rep
290
Posts

Drives: e92 M3
Join Date: Oct 2012
Location: Here and there

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
Appreciate 0
      10-06-2012, 08:41 PM   #6
ddas
Second Lieutenant
ddas's Avatar
210
Rep
289
Posts

Drives: 2018 Daytona Violet M3
Join Date: Sep 2012
Location: Atlanta

iTrader: (0)

Quote:
Originally Posted by Yolkster View Post
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.
Appreciate 0
      10-11-2012, 07:28 AM   #7
RAIF414
New Member
United_States
1
Rep
10
Posts

Drives: 2008 E92
Join Date: Aug 2011
Location: Watertown NY

iTrader: (0)

Thanks for all the replies, I am going to get some IronX and then post pictures after the rear is polished.
Appreciate 0
      10-11-2012, 08:50 AM   #8
THE TECH
BimmerPost Supporting Vendor
THE TECH's Avatar
307
Rep
13,093
Posts


Drives: BPMsport 2012 E92 M3
Join Date: Jun 2011
Location: Kansas

iTrader: (45)

Garage List
It happens more often when you run with high flow cats or catless.
Appreciate 0
      10-16-2012, 11:23 AM   #9
Johndong888
John
Johndong888's Avatar
United_States
74
Rep
885
Posts

Drives: '12 M3, '18 S560, '16 G63
Join Date: Feb 2008
Location: Cherry Hill, NJ

iTrader: (9)

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

Current - 2012 AW/FR E92 M3 | 2014 AW X5 | 2015 MB S550 | 2016 RR V8 (White FTW)
Mods - BPMTune Stg1/Servo, Euro Visors & Side Mirror, IND Gloss Blk Pkg, OEM Perf. CF Trim/Spoiler, Grills, Lights, Pedals, Umnitza V4 AE, ModeCarbon GTS V1, 19" HRE P40
Sold - 2008 BSM/Black E92 335i
Appreciate 0
      11-17-2012, 12:53 AM   #10
MrD1198
Enlisted Member
Germany
4
Rep
46
Posts

Drives: 2015 M3
Join Date: Aug 2011
Location: Germany

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?
Appreciate 0
      01-03-2013, 04:03 PM   #11
SDPRT
Lieutenant
SDPRT's Avatar
United_States
56
Rep
554
Posts

Drives: 08 M3 Space Gray/MT
Join Date: Feb 2012
Location: San Diego, CA

iTrader: (4)

Garage List
2008 BMW M3 e92  [0.00]
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?
__________________
RPI GTc/ RPI X-Pipe/DINAN Stage2/KWV3/18" BC Forged RS41/Mode Carbon V2 GTS/RPI AF + Red Scoops/Lux Angel Eyes.
Appreciate 0
      01-04-2013, 09:45 AM   #12
FI PETE
Banned
United_States
2
Rep
79
Posts

Drives: Black 328i E90
Join Date: May 2012
Location: Sarasota, FL

iTrader: (0)

have you heard of IronX?...give it a try...it should take care of it
Appreciate 0
      01-05-2013, 08:00 PM   #13
MrD1198
Enlisted Member
Germany
4
Rep
46
Posts

Drives: 2015 M3
Join Date: Aug 2011
Location: Germany

iTrader: (0)

Clay bar took mine out.
Appreciate 0
      02-13-2013, 04:38 PM   #14
ChrisK
Major General
ChrisK's Avatar
United_States
4449
Rep
7,594
Posts

Drives: '19 M2C
Join Date: Jun 2007
Location: Chicagoland

iTrader: (7)

Garage List
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
__________________
www.ReTuneTheDeTune.com
2019 M2 Competition (Sunset Orange)
Appreciate 0
      02-13-2013, 04:44 PM   #15
ChrisK
Major General
ChrisK's Avatar
United_States
4449
Rep
7,594
Posts

Drives: '19 M2C
Join Date: Jun 2007
Location: Chicagoland

iTrader: (7)

Garage List
Check out this thread:

http://www.e90post.com/forums/showth...ghlight=iron+x
__________________
www.ReTuneTheDeTune.com
2019 M2 Competition (Sunset Orange)
Appreciate 0
      02-13-2013, 04:56 PM   #16
Z K
Major General
Z K's Avatar
1886
Rep
5,504
Posts

Drives: E90 M3, G20 M340i
Join Date: Jul 2011
Location: San Francisco

iTrader: (3)

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!
Appreciate 0
      02-13-2013, 07:52 PM   #17
ChrisK
Major General
ChrisK's Avatar
United_States
4449
Rep
7,594
Posts

Drives: '19 M2C
Join Date: Jun 2007
Location: Chicagoland

iTrader: (7)

Garage List
Good info Thx!
__________________
www.ReTuneTheDeTune.com
2019 M2 Competition (Sunset Orange)
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 03:25 AM.




m3post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST