As others have mentioned, All-Season tires aren't much of a requirement in mostly sunny regions such as Bay Area, Socal, etc. Summer performance tires are more than capable in the rain, so the difference between the two where you live is negligible.
When you start to compare Extreme Summer Performance Tires (i.e. Hankook R-S3) with All-Seasons you may find a noticeable difference but this tier of summer tire is beyond that of which an OE would include on a car like the F30.
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