1.Remove the flare, square always better for handling. Unless you wanna be about the looks > handling. Staggered setup will induce understeer - science
2.Oil cooler fan? Is it necessary? Most oil cooler setup seems fine if you have airflow/ducted
3. 245 width is plenty for a square setup. On a BMW F30, Apex Racing (guys who make rotary forged rims) recommend 235/40/18 as the ideal tire size, with 245/40/18 also a viable option for track setup. I'm pretty sure there are guys winning races with 235 over 265.
https://f30.bimmerpost.com/forums/showpost.php?p=20103850&postcount=8
2.Oil cooler fan? Is it necessary? Most oil cooler setup seems fine if you have airflow/ducted
3. 245 width is plenty for a square setup. On a BMW F30, Apex Racing (guys who make rotary forged rims) recommend 235/40/18 as the ideal tire size, with 245/40/18 also a viable option for track setup. I'm pretty sure there are guys winning races with 235 over 265.
https://f30.bimmerpost.com/forums/showpost.php?p=20103850&postcount=8