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M3 Wheels on Stock E91 Tire Help?
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04-01-2023, 04:50 PM | #1 |
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M3 Wheels on Stock E91 Tire Help?
I just purchased a 2009 328i RWD E91 LCI wagon for my son’s first car. I have an E90M3 that I no longer use the stock 8.5 front and 9.5 rear wheels from and would like to use them on the E91. The stock E91 tires are 205/55/16. Using a tire calculator it looks like 245/35/18s on the front and 265/35/18s on the rears would be optimal for diameter. I searched for threads, but didn’t find much. Is this a common upgrade? Potentially planning on lowering with a Bilstein b12 kit later. Will this tire fitment be the best? Any issues with rubbing front or rear? I assume I will need to roll rear fenders at minimum. TIA
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04-01-2023, 05:14 PM | #2 |
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The offset is aggressive on an M3 and will likely poke and run badly on an E91. I would compare the offsets of the on each, odds are they will not work no matter what tires you run.
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04-01-2023, 05:41 PM | #3 |
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ET+29 on the 8.5 front and ET+23 on the 9.5 rear. Stock is 16x7 ET+31 square all around. I know they fit as my neighbor had them on his E91 LCI Xdrive, but they did rub in rear w/ 245/40/18 and 265/40/18 tires on. I just want to know what would be optimal tire size (probably 35 aspect ratio) and if anyone has run them lowered.
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04-03-2023, 11:57 AM | #4 | |
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That being said I don't have much insight for an e91 but that is what is working on my e92. I have heard a lot about 265 rubbing a lot across e9x with these wheels. Tires don't look insanely stretched either with 225 and 255. |
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09-06-2023, 11:27 AM | #5 |
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I ended up buying 235/40/18 and 255/35/18 as they were within 1/6% and immediately have DSC issues. Do I really need to switch to a 225/40/18 front to make it go away?
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09-06-2023, 01:15 PM | #6 |
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Stock sizes would be 225/40/18 and 255/35/18.
On this side of the pond you'd need to reset the TPMS (it's calculated on wheel speed differential), but I guess it's different for you. Even so, I bet a simple reset of adaptations in the DSC is all that's missing. I have 235/40/18 and 245/40/18 on my car - zero related issues. |
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