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Typical wheel offset help
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08-23-2019, 09:54 AM | #1 |
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Typical wheel offset help
First off I have a 2009 E91 328xi wagon with KWv1 coils.
Ive been doing a bunch of research but part of my confusion comes with any possible offset differences between wagons and sedan awd so I have been trying to limit my research to other LCI xi wagons which significantly limits my results. When I do find one with wheels they aren't lowered or they are wide body m3 conversion. Any help would be great. Looking at either 19x9.5 +35 or 19x8.5 +25 and would like to need or be close to needing a fender roll. Ok with square setup or staggered. If I need to run a small spacer to get the fitment just right so be it. Would also like to know what size tires to run... I was trying to work through how offset calculates with wheel width. Is 10mm of offset equal to .5in of wheel width or is it not that simple? So are the sizes I listed above basically the same fit? Thanks for the help. |
08-23-2019, 03:05 PM | #2 | |
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Offset doesn't affect wheel width, only the positioning of the wheel (and tire) within the wheel well. Take the most common problem: people try to fit M3 wheel/tires on a regular 3-series. They don't (really) fit, as the M3 has much lower offsets than the regular, so they stick out too far and rub. |
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08-23-2019, 05:45 PM | #3 |
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Yes im very well aware that offset and width are not related. I phrased that part of my question wrong. I meant to ask will those two wheels specs sit the same in the wheel well. So 10mm of offset pushes the wheel .5in out or in from the hub. However my main question is what will fit the car the best. Thanks
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08-24-2019, 01:23 AM | #4 | |
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Read this thread, I think there's enough discussion (it's a long thread unfortunately) that will clarify your questions. https://f30.bimmerpost.com/forums/sh....php?t=1133583 |
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09-02-2019, 07:41 AM | #5 | |
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I use style 220 in summer, and 219 in winter. I did roll my fenders, and can't run OEM M3 tire sizes, but with non-M tires they fit just fine. Also, I find the website www.willtheyfit.com a tremendous resource for seeing what may or may not fit your specific car. It compares your current setup with specs of a new setup you're interested in, and tells you how much more poke etc it has compared to current. Then you measure that against your car to see if you have the room to clear the new setup!
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09-02-2019, 02:14 PM | #6 | |
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They also have the same wheels specced for all E9x years. |
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09-02-2019, 06:03 PM | #7 | ||
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Not sure about wagons, no difference in coupe or vert.
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09-02-2019, 07:18 PM | #8 | |
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Same with the suspension bits: https://www.realoem.com/bmw/enUS/sho...diagId=33_1230 |
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09-02-2019, 07:42 PM | #9 |
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https://www.e90post.com/forums/showthread.php?t=241718
https://www.e90post.com/forums/showthread.php?t=451207 I can find more, but I think that should suffice.
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09-02-2019, 07:47 PM | #10 |
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If the links above aren't enough, use my own car as an example, Pre-LCI E90. No issues with OEM M3 wheels, despite being lowered. Flush fitment, no poke.
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09-02-2019, 08:13 PM | #11 |
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The wheel carriers are different LCI versus pre-lci. Only part I didn't check on.
But, I suspect that a loaded car will rub around the rears, and full-lock may be a problem at the front. Ever experienced any rubbing? |
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09-02-2019, 08:21 PM | #12 | |
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10-31-2019, 09:41 AM | #13 |
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Hey guys just wanted to circle back in case anyone else needs help on this. When shopping for wheels you are usually held to what the brand offers instead of the offset specs you want. The brand I when with offered a more aggressive offset but when I ordered it they said it wasn't available.
I went with, on a 2009 E91 LCI 328ix, 8.5 + 33 and 9.5 +35. I then added 5mm spacers all around which did cause the back to rub while excelerating in a corner. So a little compression in a corner causes a slight rub with no fender roll. Keep in mind I am lowered as far as the KW V1 allows. I will roll the fenders in the near future. I am not sure if I could fit much more offset in the back without a good stretch. In the front I plan to swap out the 5mm spacer and run a 10mm spacer, however I think most people would be happy with how it sits. Hope this helps some people. Oh and tires im running 235/35/19 and 265/30/19 |
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