Pirelli P Zero Nero All Season 235/50ZR18 97W OVERVIEW The P Zero Nero All Season is Pirelli s Ultra High-Performance All-Season tire developed to provide precise handling and all-weather traction in all conditions. Available in both conventional and Run-Flat constructions and was engineered for a wide list of Original Equipment fitments and replacement sizes. The tread profile offers ample grip for quick acceleration and shorter braking distances. Longitudinal grooves drain water from the contact patch to prevent hydroplaning.