Exhaust Bottomed Out - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)

Bimmer-Bob · 09-02-2011, 07:09 PM

So, I bottomed out the rear of my car puling into a parking space with a steep approach. I heard a metallic scraping sound and knew I had bottomed out the exhaust.

There's a bit of road rash on the underside of the tips, which doesn't bother me too much because you sort of have to be looking at it from underneath to really notice it.

What I'm a bit concerned about is that the exhaust pipe just forward of the muffler looks like it got hit, and the bend flattened slightly. I will try to get a pic up tomorrow when there's more daylight, but just off the top of your collective heads - is this type of damage generally nothing to be worried about? It looks pretty minor, but you never really know.

Thanks for any input. And damn the crazy screwed up roads around here - they're not very friendly to my lowered car...

infinitekid2002 · 09-02-2011, 07:13 PM

Next time let kermit drive.

richsnuc · 09-02-2011, 07:34 PM

I think you should definitely get it checked. You may have malformed your exhaust pipe to the point of restricting exhaust flow.

MPFit · 09-02-2011, 07:51 PM

Quote:

Originally Posted by infinitekid2002

Next time let kermit drive.

LOL!!!

Blemishes on exhaust won't matter one bit - I've had it happen to cars i've owned previosly, but if it is bent badly enough you might want it looked at.

Hog77 · 09-02-2011, 08:06 PM

Quote:

Originally Posted by MPFit

LOL!!!

Blemishes on exhaust won't matter one bit - I've had it happen to cars i've owned previosly, but if it is bent badly enough you might want it looked at.

I'd agree. Depends on the amount of damage but it would have to be bent pretty bad to make a diff. Can't hurt to have it looked at though.

Basheezy · 09-03-2011, 02:00 AM

The stock exhaust already has a flattened out part just before the muffler. Not sure if you made another one though.

IDBMW · 09-03-2011, 11:00 AM

It’s ruined so you should replace it with a performance exhaust.

Bimmer-Bob · 09-03-2011, 01:20 PM

Quote:

Originally Posted by IDBMW

It’s ruined so you should replace it with a performance exhaust.

It is the Performance exhaust.

But I think the other poster is correct- I think the "flat spot" I'm seeing is just how the exhaust pipe came from the factory. In fact, I just looked at the Performance exhaust DIY and confirmed. I did my own install but I guess I just forgot how it looked...

Anyway, that means the only damage is to the exhaust tip - there is som scratching, and the very slightest bit of deformity (I only noticed this because there was a metal splinter sticking off that I had to remove). Anyway, this is annoying, but at the same time - it's not the end of the world. I pretty much have to be on my hands and knees looking up under the exhaust to even notice it.

But man that thing made a lot of noise when it hit! I guess the impact just sort of resonated throughout the system.

09-02-2011, 07:09 PM	#1
Bimmer-Bob ! Drives: 2010 128i Join Date: Feb 2010 Location: San Diego, CA Posts: 1,955 iTrader: (1) Garage List 2010 BMW 128i [5.00] 2012 Ford Focus SE ... [0.00]	Exhaust Bottomed Out So, I bottomed out the rear of my car puling into a parking space with a steep approach. I heard a metallic scraping sound and knew I had bottomed out the exhaust. There's a bit of road rash on the underside of the tips, which doesn't bother me too much because you sort of have to be looking at it from underneath to really notice it. What I'm a bit concerned about is that the exhaust pipe just forward of the muffler looks like it got hit, and the bend flattened slightly. I will try to get a pic up tomorrow when there's more daylight, but just off the top of your collective heads - is this type of damage generally nothing to be worried about? It looks pretty minor, but you never really know. Thanks for any input. And damn the crazy screwed up roads around here - they're not very friendly to my lowered car... __________________
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09-02-2011, 07:13 PM	#2
infinitekid2002 Creepin while ya sleepin Drives: Like a Bat out of Hell Join Date: Nov 2007 Location: City of Angels Posts: 3,190 iTrader: (4) Garage List 2008 135i [3.59]	Next time let kermit drive. __________________

09-03-2011, 11:00 AM	#7
IDBMW Captain Drives: 135i Join Date: Mar 2008 Location: Boise, ID Posts: 747 iTrader: (0)	It’s ruined so you should replace it with a performance exhaust. __________________ 135i – SGM/Black Boston Leather/Aluminum Trim - 6SP MT - Sports Package - Premium Package - Cold Weather Package - Premium Hi-fi System - ipod/USB adaptor - Comfort Access System

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09-02-2011, 07:34 PM	#3
richsnuc Retired Drives: 2012 DSB/Savannah M-Sport Join Date: Nov 2007 Location: NC Posts: 157 iTrader: (0)	I think you should definitely get it checked. You may have malformed your exhaust pipe to the point of restricting exhaust flow.

09-03-2011, 02:00 AM	#6
Basheezy Bashar Drives: 2008 BMW 135i Join Date: Jun 2010 Location: Bay Area, CA Posts: 641 iTrader: (1)	The stock exhaust already has a flattened out part just before the muffler. Not sure if you made another one though.