Sorry for reviving an old thread, but this is pretty much the only information I have found on the Internet in regards to fitting M4 wheels on an e89 BMW.
I found 19x9 et29 and 19x10 et40 Bmw M4 oem wheels on my local Craigslist for a decent enough price; however, I find it hard to believe they will fit without a lot of modifications.
Please confirm as the original size on my car is:
225/35ZR19 8Jx19 ET29
255/30ZR19 9Jx19 ET40
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