They are a maximum performance summer tire, but are no longer available in the Cobalt's original 215/45ZR18 size — and haven't been for some time.
When I bought the Cobalt back in 2013, I needed to replace the tires and really needed an all season because it's a daily driver and I run into all four seasons. So, I went with the best performing all season tire made at the time, the Michelin Pilot Sport A/S 3+. To be sure, they perform phenomenally, but on my factory Cobalt, they ride and drive on the street like crap.
As I mentioned in a previous Bench Racing post, they need precise tire pressure to be tractable in the least, but they were never great. They always tramlined and pulled on the steering wheel a bit, and would often make the steering float a little as they went from one line to another. When they weren't at exactly 32 psi, they had a host of drivability problems depending on which direction they moved away from that pressure.
Consequently, when I read that the Pirelli P-Zero All Season Plus tires were nearly identical in performance on the track but were much more drivable on the street, I decided to take a chance and have them installed when the Michelin's recently wore out a second time.
To be fair to all parties, I've never been a big fan of Pirelli's and I've absolutely adored every other Michelin tire I've ever had on a car. These Pirellis, though, solved every single driving faux pa I was experiencing with the Cobalt.
Don't get me wrong, they aren't a replacement for repairing a bad suspension or shitty brakes, but she smoothed right out and the steering response is a dream. And in this case, my entire suspension is already brand new and perfectly aligned.
Can't thank her enough.
In case you were wondering, no alignment or anything was done in conjunction with the tire swap, just the tires.
Until next week, I hope your ride is rolling as nicely as the Cobalt!