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2Addicts | BMW 2-Series forum Technical Topics Wheels and Tires -- Sponsored by The Tire Rack 18X9 - 255 Front Possible

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      01-10-2019, 11:20 AM   #1
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18X9 - 255 Front Possible

Hey guys,

I ran across this thread while looking for a 18X9 Square setup

https://www.1addicts.com/forums/showthread.php?t=216972

Quote:
Originally Posted by Fair View Post








We test fit a set of 18x9" (ET41 D-Force LTW5) onto a customers 135i recently. Seemed to work fine to me... :iono:

Any car this heavy needs as much tire as you can possibly stuff underneath it. The rear can handle more than a 9", but then you're going back to a staggered set-up which means more understeer. BMWs work best with the same wheel/tire widths front and rear. The 18x9 wheel on the back of this car would have worked better with more backspacing, pushing the wheel inboard more. From my testing, I think an 18x9 ET45 to ET48 offset would be ideal out back (and the same set-up with a 10mm spacer up front would make tire rotations easy).

An 8" wheel should fit with ease. That's still too narrow, but it would work. Anything to get the boat anchor factory wheels + run flat tires off these cars is a good thing.



48.3 pounds for the OEM front wheel + a replacement tire, and that's not even a run flat (which are even heavier, and ride/handle worse). That is abysmal for such a skinny wheel and tire. Those brakes are also MASSIVELY heavy. Its no wonder why these cars push 3450 pounds... but it can be fixed.

For me, the appeal is to have a slight stretch on the rubber for fitment and better sidewall support vs the 18X8.5. Would something like this work for the F22?
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      01-10-2019, 03:51 PM   #2
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I've been researching wheel fitments for our 2 series for quite a while before I settled on 17x8.5 with 255 square for my track set up. I would be HIGHLY surprised if you were able to fit a 18x9 in the front even with some serious camber dialed in.

I believe 18x8.5 255 square with at least 2.5* camber is about as wide as we can go without rubbing. Even that is still wheel/offset dependent.

I can't quite remember but I don't recall coming across anyone with 18x9s up front but I could be wrong.
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      01-10-2019, 04:13 PM   #3
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Quote:
Originally Posted by gtmax500 View Post
I can't quite remember but I don't recall coming across anyone with 18x9s up front but I could be wrong.
I went with 17X9 ET42 -1.9 with no spacer and a very slight fender roll up front.
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      01-10-2019, 04:36 PM   #4
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Quote:
Originally Posted by dradernh View Post
I went with 17X9 ET42 -1.9 with no spacer and a very slight fender roll up front.
Would 18's work equally as well as the 17s?
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      01-10-2019, 04:59 PM   #5
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Quote:
Originally Posted by Taskmaster View Post
Would 18's work equally as well as the 17s?
I don't know, but I think it's the size of the tire that is the limiting factor (i.e. that's what rubs, whether on the inside against the suspension or on the outside against the fender or the fender liner).
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      01-10-2019, 05:04 PM   #6
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Quote:
Originally Posted by dradernh View Post
I don't know, but I think it's the size of the tire that is the limiting factor (i.e. that's what rubs, whether on the inside against the suspension or on the outside against the fender or the fender liner).
Have a picture how your tire and wheel look currently mounted?
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      01-10-2019, 05:35 PM   #7
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Quote:
Originally Posted by Taskmaster View Post
Have a picture how your tire and wheel look currently mounted?
Below are the only shots I have with the 17X9 wheel and the 255/40-17 tire on the car.

The rear is 18X9 ET58 -1.6 with a 5mm spacer and a 255/35-18 tire. The drop is 1" in front and 1" in the rear.





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      01-10-2019, 06:50 PM   #8
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Quote:
Originally Posted by dradernh View Post
Below are the only shots I have with the 17X9 wheel and the 255/40-17 tire on the car.

The rear is 18X9 ET58 -1.6 with a 5mm spacer and a 255/35-18 tire. The drop is 1" in front and 1" in the rear.





Awesome. Awesome! Thank you!
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      01-11-2019, 10:11 AM   #9
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Quote:
Originally Posted by dradernh View Post
Below are the only shots I have with the 17X9 wheel and the 255/40-17 tire on the car.

The rear is 18X9 ET58 -1.6 with a 5mm spacer and a 255/35-18 tire. The drop is 1" in front and 1" in the rear.

[IMG]http://u.cubeupload.com/EdWinter377/f36M240iShowingFitmento.jpg[IMG]

[IMG]http://u.cubeupload.com/EdWinter377/M240iwithApexWheelsT.jpg[IMG]

[IMG]http://u.cubeupload.com/EdWinter377/M240iShowingFitmento.jpg[IMG]
Nice to see someone running 255s all around. What is your full suspension and alignment spec?
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      01-11-2019, 01:48 PM   #10
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Quote:
Originally Posted by cxp213 View Post
Nice to see someone running 255s all around. What is your full suspension and alignment spec?
The build is detailed here: https://www.2addicts.com/forums/show....php?t=1532418
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