Need help! Tires scraping

dinanx6f16 · 09-18-2020, 02:45 PM

Hey guys! I recently swapped over to a e9x spec wheel set up (18x10.5 all around) with 275/40r18 all around. I added 5mm spacers front and back because the tires were too close to the strut bars. But after driving it a few times, I could feel a scrape (I think coming from the fenders) every-time I go over a bump in the highway. Is there anything I can do to fix this without having to change up my whole set up? Please help, thank you!

tebbnsx · 09-19-2020, 02:14 PM

It's probably all the downforce you are generating with that massive wing bro!

m4tic · 09-19-2020, 08:56 PM

more negative camber? pull the fenders? 3-4mm spacers?

deeldoo · 09-19-2020, 09:01 PM

Quote:

Originally Posted by dinanx6f16

Hey guys! I recently swapped over to a e9x spec wheel set up (18x10.5 all around) with 275/40r18 all around. I added 5mm spacers front and back because the tires were too close to the strut bars. But after driving it a few times, I could feel a scrape (I think coming from the fenders) every-time I go over a bump in the highway. Is there anything I can do to fix this without having to change up my whole set up? Please help, thank you!

Do you have a body kit on that car? Looks mad agressive

PsychCA · 09-19-2020, 09:05 PM

On the picture, doesn’t seem you have much camber ?

icegrill · 09-19-2020, 09:59 PM

Sick setup tho🤤

TheBreeze · 09-20-2020, 10:04 AM

That's a pretty tall tire for the front. I'm surprised you haven't rubbed through the fender liners.

AlterZgo · 09-20-2020, 02:12 PM

Identify where the tires are rubbing in front and use a heat gun to heat up the liner and then push in the areas that are rubbing. For the back there are some spots on the rear bumper that may rub and you can a carefully grind down some of those spots. If you grind metal make sure you paint it so it doesn’t rust.

RoundelM3 · 09-22-2020, 10:24 AM

Try raising the ride height 1/2 inch or so?

PsychCA · 09-22-2020, 10:32 AM

Your ride is sick, by the way.

VroomBahpop · 09-22-2020, 03:45 PM

Quote:

Originally Posted by m4tic

more negative camber? pull the fenders? 3-4mm spacers?

yeah seems camber is the only way from the photos. Wicked ride!, my heart would start skipping as I walk up to that every morning.

Poiseuille · 09-22-2020, 05:00 PM

can only guess of course but i bet the scrape is in the back.

OEM spec:
E92 rear offset= +23
F8X rear offset= +40

so if the wheels you're talking about are OEM E92, then they're one inch narrower but with 17mm LESS offset.
but you say this set is 10.5 square so probably not OEM, therefore we don't know what the offset is.
need to know the actual offset in order to answer your question but it's pretty likely that adding a rear spacer is making it worse.

front should be ok with or without a spacer.

09-18-2020, 02:45 PM	#1
dinanx6f16 Private First Class 80 Rep 142 Posts Drives: BMW X6 F16 Join Date: Nov 2018 Location: CA iTrader: (0)	Need help! Tires scraping Hey guys! I recently swapped over to a e9x spec wheel set up (18x10.5 all around) with 275/40r18 all around. I added 5mm spacers front and back because the tires were too close to the strut bars. But after driving it a few times, I could feel a scrape (I think coming from the fenders) every-time I go over a bump in the highway. Is there anything I can do to fix this without having to change up my whole set up? Please help, thank you! Attached Images
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09-19-2020, 02:14 PM	#2
tebbnsx Captain 719 Rep 785 Posts Drives: F80 M3 Join Date: Feb 2008 Location: Central Arkansas iTrader: (2) Garage List 2018 BMW M3 [0.00]	It's probably all the downforce you are generating with that massive wing bro!
	Appreciate 5 MisterF80M31047.00 EricP3692.50 SD ///M42992.00 GregM41317.00 G35POPPEDMYCHERRY4998.50 Quote

09-19-2020, 08:56 PM	#3
m4tic New Member 15 Rep 23 Posts Drives: ol beater Join Date: Aug 2018 Location: Irvine, CA iTrader: (0)	more negative camber? pull the fenders? 3-4mm spacers?
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09-19-2020, 09:05 PM	#5
PsychCA Lieutenant 194 Rep 421 Posts Drives: M3 E92 6MT - M3 F80 ZCP 6MT Join Date: May 2017 Location: GTA iTrader: (0)	On the picture, doesn’t seem you have much camber ?
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09-19-2020, 09:59 PM	#6
icegrill Lieutenant Colonel 2078 Rep 1,780 Posts Drives: 2015 M3 Join Date: Jan 2018 Location: Oregon iTrader: (3)	Sick setup tho🤤
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09-20-2020, 10:04 AM	#7
TheBreeze Lieutenant 255 Rep 494 Posts Drives: 2016 F80 Join Date: Aug 2012 Location: Cary, NC iTrader: (7)	That's a pretty tall tire for the front. I'm surprised you haven't rubbed through the fender liners.
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09-20-2020, 02:12 PM	#8
AlterZgo Lieutenant Colonel 1538 Rep 1,665 Posts Drives: 23 X3 M40i, 21 911S, 24 Taycan Join Date: Sep 2010 Location: Gilbert, AZ iTrader: (0)	Identify where the tires are rubbing in front and use a heat gun to heat up the liner and then push in the areas that are rubbing. For the back there are some spots on the rear bumper that may rub and you can a carefully grind down some of those spots. If you grind metal make sure you paint it so it doesn’t rust.
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09-22-2020, 10:24 AM	#9
RoundelM3 Major General 1837 Rep 6,990 Posts Drives: 15 F80 M3, 22 G01 X3 30i Join Date: Apr 2010 Location: Clayton, NC iTrader: (2) Garage List 2022 BMW X3 [9.83] 2015 BMW M3 [6.50]	Try raising the ride height 1/2 inch or so? __________________ 2015 F80 ///M3 Sedan 7DCT Tanzanite, 2022 X3 sDrive30i 8AT Brooklyn Grey
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09-22-2020, 10:32 AM	#10
PsychCA Lieutenant 194 Rep 421 Posts Drives: M3 E92 6MT - M3 F80 ZCP 6MT Join Date: May 2017 Location: GTA iTrader: (0)	Your ride is sick, by the way.
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09-22-2020, 05:00 PM	#12
Poiseuille Brigadier General 5393 Rep 3,737 Posts Drives: 2016 M4 DCT Tanzanite/Amaro Join Date: Oct 2016 Location: Princeton iTrader: (0) Garage List [0.00] [10.00]	can only guess of course but i bet the scrape is in the back. OEM spec: E92 rear offset= +23 F8X rear offset= +40 so if the wheels you're talking about are OEM E92, then they're one inch narrower but with 17mm LESS offset. but you say this set is 10.5 square so probably not OEM, therefore we don't know what the offset is. need to know the actual offset in order to answer your question but it's pretty likely that adding a rear spacer is making it worse. front should be ok with or without a spacer.
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