1500 miles in... swapped flat prone disaster PZeros for PS AS4s and went 245/40/19 vs stock 235/35/20s.
The as4 in 245 is 8.6" contact vs the Pzero meger 7.9"
efficiency is a push. As4 294 vs Pzero 301... negligible tbh.
handling the Pzero had a tad more to offer, but barely. Turn in is outstanding on AS4s, but can’t quite compete with the summer compound Pzero in 35 aspect. Given I went summer to all season and only lost a touch, color me impressed.
wet handling, the AS4 is a bit more sturdy tbh. More confident in It when in rains.
ride? AS4 is better, but on lighter wheels with 40 aspect I expected this.
snow... no data, but the Pzero is a no go here So it’s moot. Had the a/s3+ and it was acceptable the as4 is allegedly better.
Reliability. Ha. Pzero had a blow out flat and bubbled 2 other tires in 750mi. 1500 miles into the AS4s... nothing. Rock solid all tires look perfect. Yes, the 40 aspect is a game change, but the boxy sideway I suspect is better for preventing flats.
overall... amazing results. Got everything I wanted.