Friday I put the PA4s on, just beating the first cold snap, meaning driving at or below 45. The PZ4s, while excellent in rain, start becoming intolerant of temperatures below 60, and during hard acceleration axle tramp occurs. Pirelli’s warning about compound cracking near freezing is an incentive to change out, too. In contrast, the PA4s lay down power very nicely, and are very responsive. They are more like lesser vehicles’ all-season fitments. Their one drawback is they’re good, but not excellent on snow.