Pirelli 285/35 R21 105Y P Zero PZ4 AR 2024

Pirelli P Zero PZ4 285/35 R21 105Y AR 2024

The Pirelli P Zero PZ4 285/35 R21 105Y AR is an ultra-high-performance summer tyre developed for high-end cars and SUVs, with the AR marking identifying the Alfa Romeo homologated specification. This exact configuration uses XL construction, a 105 load index and Y speed rating. The 105 load index corresponds to a maximum load of 925 kg per tyre, while the Y rating allows speeds up to 300 km/h. Pirelli lists the exact tyre as 285/35R21 105Y XL with AR OE marking.

Alfa Romeo AR Homologated Specification

The AR marking is an important part of this P Zero PZ4 configuration. Pirelli identifies this version specifically with Alfa Romeo OE marking AR, distinguishing it from other 285/35 R21 P Zero PZ4 variants carrying different manufacturer markings. When replacing an original-equipment tyre, the complete size, load rating and OE marking should therefore be matched rather than selecting a tyre based only on dimensions.

The P Zero PZ4 uses a performance-oriented tread design developed from Pirelli's motorsport experience. Its inner tread area uses a high-silica compound and customized pattern intended to support wet-road traction and comfort, while the outer tread incorporates an optimized pitch sequence and siping arrangement designed to reduce noise and rolling resistance. Pirelli describes the PZ4 as a UHP summer tyre tailored to high-end cars and SUVs.

Wet Grip and High-Speed Road Performance

For this exact 285/35R21 105Y XL AR specification, Pirelli publishes a Class A wet-grip rating, fuel-efficiency class C and external rolling noise of 72 dB with noise class A. These values belong to the AR homologated configuration and should not automatically be applied to other P Zero PZ4 versions in the same size.

The 285 mm section width combined with the 35-series profile and 21-inch wheel diameter gives this tyre a wide, low-profile performance configuration. Tire Rack lists a 9/32-inch tread depth, 2,039 lb maximum load and a 9.5–11-inch rim-width range for the 105Y XL AR version. Its published UTQG is 280 AA A.

Who This Tyre Suits

The Pirelli P Zero PZ4 285/35 R21 105Y AR is suited to drivers requiring the Alfa Romeo-approved specification for a compatible vehicle and looking for high-speed handling, strong wet grip and responsive performance. It is a summer tyre rather than an all-season or winter product, and Pirelli states that this configuration is not intended for severe ice and snow conditions.

For customers looking to buy car tyres in UAE, this specification combines XL construction, 925 kg maximum load capacity per tyre, 300 km/h Y-rated capability and Alfa Romeo AR homologation. Dwbtyres should match the complete 285/35 R21 105Y XL AR specification when checking compatibility. The wider Pirelli Tyres range contains several OE-marked P Zero variants, so the AR marking should not be substituted without confirming the vehicle specification.