My solution to fender liner rubbing

MMM.PWR · 05-13-2023, 10:03 PM

Today I modified my fender liner as I have a pretty aggressive setup (285 PS4S front, 20x10 +15, 12mm spacer. I used a painted gutter guard as the mesh and automotive grade zip ties. This solution removes the loud rubbing caused by the outer "louvers". Special thanks to ericj0n and FISH22. Loving this clean look.

Link to gutter guard here.

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thompsac25 · 05-13-2023, 10:11 PM

That’s pretty clean! I might have to do this!
Nice job and thanks for sharing.

MMM.PWR · 05-13-2023, 10:13 PM

Quote:

Originally Posted by thompsac25

That’s pretty clean! I might have to do this!
Nice job and thanks for sharing.

It was super easy. Honestly a no brainer for everyone here.

chicagofan00 · 05-14-2023, 09:00 AM

Damn, you weren’t kidding when you said you have an aggressive setup!

I’m surprised you didn’t rub the fins clean off to begin with.

MMM.PWR · 05-14-2023, 10:17 AM

Quote:

Originally Posted by chicagofan00

Damn, you weren’t kidding when you said you have an aggressive setup!

I’m surprised you didn’t rub the fins clean off to begin with.

I had previously trimmed them, but the rubbing continued. the top fin did snap off on one side and gave up.. either way, all good now! I can lock the steering wheel and reverse all day

FISH22 · 05-14-2023, 11:59 AM

Nice work man!

Schulminator · 05-14-2023, 06:51 PM

Good work, thanks for sharing. Trimmed the fins on mine, but it appears to be rubbing on the flat area towards the outer part of linear.

MMM.PWR · 05-14-2023, 08:40 PM

Quote:

Originally Posted by Schulminator

Good work, thanks for sharing. Trimmed the fins on mine, but it appears to be rubbing on the flat area towards the outer part of linear.

It does rub in that area, but it doesn't make the super loud sound that rubbing the fins made. With time, the tire will rub that area out until it doesn't anymore - no big deal IMO. Trimming the fins does work, but it leaves the heat exchanger more exposed.

chujk1985 · 05-15-2023, 11:03 AM

Looks great, I think ill need to do this as well. How hard/annoying was it to remove the fender liner?

MMM.PWR · 05-15-2023, 11:06 AM

Quote:

Originally Posted by chujk1985

Looks great, I think ill need to do this as well. How hard/annoying was it to remove the fender liner?

It's about 15 (maybe less) 10mm (M3) / 8mm (M4) screws. not hard at all. Get a 1/4 in ratchet with an extension and you can take it off in 5 - 10 min.

colo3Kid · 05-15-2023, 11:14 AM

Very clean and a KISS/innovative solution.

Hit_Apex · 05-23-2023, 03:41 PM

What exactly is the function of the louvers? It's either directing front side air and water flowing through the HE downward, which doesn't make much sense. The louvered insert on the brake duct is obviously directing water down and not on the rotor. but that is passing through uninterpreted versus through the fins of the HE. Best I can think of it's preventing mud or sticky debris from getting flung into the back of the HE that departs the tire at a downward trajectory. Nice and simple solution you have there. If I never drive in foul weather I might just cut out that problem area and leave open.

MMM.PWR · 05-23-2023, 03:52 PM

Quote:

Originally Posted by Hit_Apex

What exactly is the function of the louvers? It's either directing front side air and water flowing through the HE downward, which doesn't make much sense. The louvered insert on the brake duct is obviously directing water down and not on the rotor. but that is passing through uninterpreted versus through the fins of the HE. Best I can think of it's preventing mud or sticky debris from getting flung into the back of the HE that departs the tire at a downward trajectory. Nice and simple solution you have there. If I never drive in foul weather I might just cut out that problem area and leave open.

Thank you. I do believe it is your second thought that is the case here, looking at the louvers from a downward angle, it is a solid wall - the angle allows the HX to breathe while keeping rocks/debris that wrap around the tire from hitting it from the back.

Hit_Apex · 05-23-2023, 03:55 PM

Quote:

Originally Posted by MMM.PWR

Thank you. I do believe it is your second thought that is the case here, looking at the louvers from a downward angle, it is a solid wall - the angle allows the HX to breathe while keeping rocks/debris that wrap around the tire from hitting it from the back.

Yep, just thought of track clag too - that box could hold a few pounds of tire boogers.

greentrbo95gst · 04-02-2024, 05:21 PM

Did you cut off the oem piece?

MMM.PWR · 04-03-2024, 12:55 AM

Quote:

Originally Posted by greentrbo95gst

Did you cut off the oem piece?

yes

SkyNinja83 · 04-23-2024, 03:43 PM

I'm planning to modify my fender liner this week, so thank you for the write-up and pics sir! See you soon

Mautofied17 · 04-23-2024, 04:44 PM

FYI they have pre-made parts for this now on Alibaba!

saintex · 04-29-2024, 06:19 AM

Are those volk racing wheels?

Any pics?

05-13-2023, 10:03 PM	#1
MMM.PWR Sith Lord 3452 Rep 893 Posts Drives: G80X, Mazda 3 6MT (daily) Join Date: Nov 2021 Location: Wisconsin iTrader: (0) Garage List 2022 BMW M3 Comp. [10.00]	My solution to fender liner rubbing Today I modified my fender liner as I have a pretty aggressive setup (285 PS4S front, 20x10 +15, 12mm spacer. I used a painted gutter guard as the mesh and automotive grade zip ties. This solution removes the loud rubbing caused by the outer "louvers". Special thanks to ericj0n and FISH22. Loving this clean look. Link to gutter guard here. __________________ Always two there are.
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05-13-2023, 10:11 PM	#2
thompsac25 Stance to make her dance 711 Rep 2,004 Posts Drives: 2022 G80 M3 Join Date: Nov 2013 Location: Cincinnati, OH iTrader: (33)	That’s pretty clean! I might have to do this! Nice job and thanks for sharing.
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05-14-2023, 09:00 AM	#4
chicagofan00 Major General 19169 Rep 8,039 Posts Drives: 2024 X5 M60i Join Date: Feb 2011 Location: Phoenix iTrader: (1) Garage List 2024 BMW X5 M60i [10.00]	Damn, you weren’t kidding when you said you have an aggressive setup! I’m surprised you didn’t rub the fins clean off to begin with. __________________ Instagram: @Phxrisingphotography Current - 2024 G05 X5 ///M60i in Java Green Past - 2005 E53 X5 3.0i in Titanium Silver; 2008 E92 335i in Montego Blue; 2019 G01 X3 M40i in Glacier Silver; 2022 G80 M3 Competition in Twilight Purple
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05-14-2023, 11:59 AM	#6
FISH22 Colonel 5409 Rep 2,030 Posts Drives: G80 M3 Competition Join Date: Apr 2012 Location: Chesapeake, VA iTrader: (1) Garage List 2021 BMW M3C [10.00] 2011 BMW M3 [10.00]	Nice work man!
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05-14-2023, 06:51 PM	#7
Schulminator Second Lieutenant 478 Rep 242 Posts Drives: 2023 SSG G80 Xdrive Join Date: Jan 2023 Location: Oviedo, FL iTrader: (0)	Good work, thanks for sharing. Trimmed the fins on mine, but it appears to be rubbing on the flat area towards the outer part of linear.
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05-15-2023, 11:03 AM	#9
chujk1985 Major 543 Rep 1,029 Posts Drives: 2023 G80 M3 X Comp Join Date: Oct 2018 Location: St. Louis iTrader: (1)	Looks great, I think ill need to do this as well. How hard/annoying was it to remove the fender liner?
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05-15-2023, 11:14 AM	#11
colo3Kid Private First Class 155 Rep 127 Posts Drives: BMW 2022 M4 Comp Xdrive Join Date: May 2022 Location: Corpus Christi, TX iTrader: (0)	Very clean and a KISS/innovative solution.
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05-23-2023, 03:41 PM	#12
Hit_Apex Riding the knock sensor 2371 Rep 1,593 Posts Drives: 21 X5MC \| 23 M4CSL Join Date: May 2008 Location: PCH iTrader: (1) Garage List 2021 BMW X5MC [0.00]	What exactly is the function of the louvers? It's either directing front side air and water flowing through the HE downward, which doesn't make much sense. The louvered insert on the brake duct is obviously directing water down and not on the rotor. but that is passing through uninterpreted versus through the fins of the HE. Best I can think of it's preventing mud or sticky debris from getting flung into the back of the HE that departs the tire at a downward trajectory. Nice and simple solution you have there. If I never drive in foul weather I might just cut out that problem area and leave open. __________________
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04-02-2024, 05:21 PM	#15
greentrbo95gst Brigadier General 1244 Rep 4,109 Posts Drives: 21 M5 Comp Join Date: Jan 2011 Location: Orange County iTrader: (6)	Did you cut off the oem piece? __________________ Current: 21 M5 Comp, 23 M3 6spd, 23 i4, 20 Tundra TRD PRO
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04-23-2024, 03:43 PM	#17
SkyNinja83 New Member 26 Rep 15 Posts Drives: 2024 M3 Comp XDrive Join Date: Dec 2023 Location: Chicago, IL iTrader: (0)	I'm planning to modify my fender liner this week, so thank you for the write-up and pics sir! See you soon
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04-23-2024, 04:44 PM	#18
Mautofied17 First Lieutenant 100 Rep 308 Posts Drives: 2024 M3 Competition xDrive Join Date: Jan 2013 Location: Alabama iTrader: (0)	FYI they have pre-made parts for this now on Alibaba! __________________ Blake - 2024 M3 Competition xDrive Square 826M 20" Wheels, Dinan HAS, Dinan Midpipe, Dinan Axle-Back Exhaust, Dinan 10/12mm Spacers, SST Valve Controller
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04-29-2024, 06:19 AM	#19
saintex Private First Class 23 Rep 126 Posts Drives: Z4MC BSM E92 335xDrive BSM Join Date: Nov 2008 Location: Canada iTrader: (-1)	Are those volk racing wheels? Any pics?
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