Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E90/E91/E92/E93 (2006 - 2013)

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

Reply
 
Thread Tools Display Modes
  #1  
Old 08-15-2014, 02:35 PM
blue boy's Avatar
blue boy blue boy is offline
Officially Welcomed to the 'Fest
Location: south of east
 
Join Date: Nov 2013
Posts: 289
Mein Auto: 2011 328ix
bird poop and clear coat damage

trying to remove a spot of bird poop on the hood was very difficult and yes the car has been polished and sealed -was but few months back
anyway, there appears to be permanent damage to the clear coat.

ive used scratch remover, buffer marks remover liquid to no avail.
its rough to feel and even shows in iphone picture
anyone every heard to such. i thought we had a harden clear coat.?
__________________
surely goodness and mercy will follow us all the days of our lives

2011 328IX
Ford 150
Gen 3 Prius
Goldwing Trike
Mustang with mods
Reply With Quote
Advertisement
  #2  
Old 08-15-2014, 02:44 PM
v8power v8power is offline
Officially Welcomed to the 'Fest
Location: IL
 
Join Date: Oct 2011
Posts: 192
Mein Auto: 2011 X5 35i
Birds have strong acid content to digest all kinds of bacterial insects and whatever dirty stuff laying around. There is a 6 hour window from pooped to baked in the sun to clean off before the clearcoat is etched.

A rotary buffer with cutting pad and compound will work as it remove a layer of the clear. I always have a rag and a quick detail spray to wipe off bird **** when see it right away. People think im ocd but they dont know what damage will be done if left on.
__________________
2011 X5 35i Sport
2007 E92 335i
Reply With Quote
  #3  
Old 08-15-2014, 02:44 PM
thekurgan's Avatar
thekurgan thekurgan is online now
Bad Lieutenant
Location: Sacramento, CA
 
Join Date: Jul 2007
Posts: 5,848
Mein Auto: S65B40 Powered
clear coat is just clear paint, nothing really special about it unlike Mercedes clear. A local shop should be able to take care of it for you, it just need a small layer removed and polished.
__________________

08 E90M3 6MT Alpinweiss/Schwartz/BMW Pedals/Dinan Exhaust/BMW Alcantara wheel
Reply With Quote
  #4  
Old 08-15-2014, 02:55 PM
blue boy's Avatar
blue boy blue boy is offline
Officially Welcomed to the 'Fest
Location: south of east
 
Join Date: Nov 2013
Posts: 289
Mein Auto: 2011 328ix
ive been told that i have type 2 bird poop which fracture the clear all the way thru to the base coat
ive had cars set out for yrs and not have this problem
__________________
surely goodness and mercy will follow us all the days of our lives

2011 328IX
Ford 150
Gen 3 Prius
Goldwing Trike
Mustang with mods
Reply With Quote
  #5  
Old 08-15-2014, 03:37 PM
Porando Porando is offline
Officially Welcomed to the 'Fest
Location: South OC
 
Join Date: Jul 2011
Posts: 667
Mein Auto: 2011 335i, 2004 X5 4.4L
that is why I always care in my car a bottle of "Meguiar's Quik Detailer Mist & Wipe" and microfiber cloth.
Reply With Quote
  #6  
Old 08-15-2014, 05:34 PM
alpinweiss alpinweiss is offline
Officially Welcomed to the 'Fest
Location: Nuevo MÚxico
 
Join Date: Sep 2009
Posts: 1,552
Mein Auto: E46, E83, E90 (all MT)
Quote:
Originally Posted by Porando View Post
that is why I always care in my car a bottle of "Meguiar's Quik Detailer Mist & Wipe" and microfiber cloth.
This is certainly better, but even a bottle of water and rag will do, for quick removal of bird poop. Anything is better than leaving it on your paint.

In terms of paint quality, some bird poop is stronger than others. I don't think any paint is immune; BMW, Mercedes, or any other.

__________________
Alpinwei▀
E46, E83, E90 (all with three pedals)
BMW CCA member
Reply With Quote
  #7  
Old 08-15-2014, 05:50 PM
Nordic_Kat's Avatar
Nordic_Kat Nordic_Kat is offline
Omnia moderata ratione
Location: Texas
 
Join Date: Aug 2009
Posts: 7,334
Mein Auto: Certified Garage Princess
I keep a bottle of Detailing spray and a fluffy microfiber in the trunk for the inevitable bird bombs. Letting them bake in the sun is a death knell for the paint finish.

And yes, some birds poop is way more acidic than others. Best to not try to guess but get it cleaned off ASAP!!

That being said, one thing I've found helps mitigate the etching is to get the poop cleaned off without further scratching the clear coat, then spray pure isopropyl alcohol on the area liberally then cover with a cotton ball soaked in ipa and let it saturate for about 15-20 minutes. Rinse with water and then use a rubbing compound like Meg's 105. You can usually lift the etch and finish the polishing.

If this sounds like too much work, have a body shop or a reputable detailer do paint correction.

Just get the poop off asap and as gently as possible.
__________________
If your sport doesn't put blood, dirt or grease under your fingernails,
then it's just a game.

Euro Modded|Split Armrest|Rear Foglight Mod|BMW Performance Exhaust|CDV Delete|Shark Fin Antenna Delete|Front Reflector Delete|LUX H8 Angel Eyes|328i|3 Pedals|Das Fahren im Freien| BMWCCA#445793
Reply With Quote
  #8  
Old 08-15-2014, 05:53 PM
Ilovemycar Ilovemycar is offline
wooohooo
Location: CA
 
Join Date: Feb 2010
Posts: 2,742
Mein Auto: '08 335i coupe 6MT sport
BMW paint is a lot thicker, and IMO much more robust than econobox paints of Toyota, Honda, Mazda...

The worst off are dark paints, especially black. Heat accelerates the enzymatic breakdown of paint, and then there's the cycle of heat expansion and contraction of the paint which might trap in the damaging enzymes/acid.

Usually when I hear about a case that's really bad, it's with dark paint. You don't often hear about this happening with Alpine White, for example.
Reply With Quote
  #9  
Old 08-15-2014, 07:22 PM
anE934fun anE934fun is offline
Officially Welcomed to the 'Fest
Location: S.F. Bay Area
 
Join Date: May 2008
Posts: 6,802
Mein Auto: 2010 335d
Quote:
Originally Posted by Nordic_Kat View Post
I keep a bottle of Detailing spray and a fluffy microfiber in the trunk for the inevitable bird bombs. Letting them bake in the sun is a death knell for the paint finish.

And yes, some birds poop is way more acidic than others. Best to not try to guess but get it cleaned off ASAP!!

That being said, one thing I've found helps mitigate the etching is to get the poop cleaned off without further scratching the clear coat, then spray pure isopropyl alcohol on the area liberally then cover with a cotton ball soaked in ipa and let it saturate for about 15-20 minutes. Rinse with water and then use a rubbing compound like Meg's 105. You can usually lift the etch and finish the polishing.

If this sounds like too much work, have a body shop or a reputable detailer do paint correction.

Just get the poop off asap and as gently as possible.
I have been told that a 5% solution of sodium bicarb and water neutralizes the poop. Although lately, the idea of avoidance seems to have a certain appeal - white paint job for my next car.
__________________
Reply With Quote
  #10  
Old 08-15-2014, 07:24 PM
anE934fun anE934fun is offline
Officially Welcomed to the 'Fest
Location: S.F. Bay Area
 
Join Date: May 2008
Posts: 6,802
Mein Auto: 2010 335d
Quote:
Originally Posted by Ilovemycar View Post
BMW paint is a lot thicker, and IMO much more robust than econobox paints of Toyota, Honda, Mazda...

The worst off are dark paints, especially black. Heat accelerates the enzymatic breakdown of paint, and then there's the cycle of heat expansion and contraction of the paint which might trap in the damaging enzymes/acid.

Usually when I hear about a case that's really bad, it's with dark paint. You don't often hear about this happening with Alpine White, for example.
Kind of hard to see the etching of clear coat with Alpine White. You could feel the etching before you saw it.
__________________
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E90/E91/E92/E93 (2006 - 2013)
Today's Posts Search
Thread Tools
Display Modes

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 On



Forum Jump


All times are GMT -7. The time now is 05:19 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms