Pirelli P Zero Nero All Season P235/50ZR18 97W OVERVIEW The P Zero Nero All Season tire from Pirelli is designed for ultra-high-performance levels of braking and handling along with year-round traction and the kind of low noise and ride comfort you d expect with a Grand Touring tire. The P Zero Nero All Season features an asymmetric all-season tread pattern with shoulder grooves circumferential channels and a dense network of sipes for great traction in wet or light winter weather. The P Zero Nero All Season is also designed with Pirelli s Noise Reduction System a layer of foam that helps soak up road noise and resonance. Select sizes of the P Zero Nero All Season are available with run-flat technology and this tire is also covered by a 45 000 mile limited manufacturer tread life warranty.