The Pirelli P Zero (PZ4) in size 275/35R21 103Y XL is a flagship Ultra-High Performance (UHP) tyre that represents the 2026 pinnacle of luxury performance. The (*) marking signifies that this is a BMW Star-Marked fitment, specifically co-developed with BMW to meet the precise handling and stability requirements for high-end models like the BMW 7 Series, X3, and X4.

In a staggered setup, this is typically the rear axle tyre, paired with the 245/40R21 100Y (*) on the front.

The Pirelli P Zero (PZ4) in size 245/40R21 100Y XL is a specialized Ultra-High Performance (UHP) tyre that represents the 2026 flagship for luxury performance. The (*) marking signifies that this is a BMW Star-Marked fitment, specifically co-developed with BMW to harmonize with the chassis and electronic systems of models like the BMW X3, X4, and 7 Series.

The r-f designation confirms it is a Run-Flat Tyre, while (GE) indicates its high-precision manufacturing in Germany. The Y25 batch identifies this as a fresh 2025 production unit.