The Pirelli P ZERO PZ4 in size 275/50R20 113W XL is a flagship ultra-high-performance (UHP) summer tyre engineered specifically for high-end luxury SUVs and crossovers.

The (MO) marking is the defining trait of this specification, indicating it is officially Mercedes Original homologated. Pirelli co-engineered this exact version alongside Mercedes-Benz to optimize the tyre's internal architecture, tread compound, and weight distribution for their premier luxury SUV platforms—most notably serving as the definitive factory standard for the Mercedes-Benz GLE (W167) and GLS-Class.