To the OP, you are runniing P7 AS, not PZeros, right?
I am running staggered 20" P zeros now and they hook up like crazy when I need them too (but potholes are an issue, just like any other low profile tire, this is life).
I am going to the square P7 AS set up for the winter at the end of October, but all indications are I will not be getting set of P7s when the ones I have wear out. We shall see.
2013 F30 335i 6MT M-Sport - Blk Saph. / Beige Lthr / Wood Tr. - Tech Pk - VSS M-Adp. Susp. M-Perf Stainless Exhaust M-Perf. brakes