Hankook 1027581 255/55ZR20XL (110Y) Ventus S1 Evo Z K129 Summer UHP OE Tire NC0 BW

The Hankook Ventus S1 Evo Z K129 is a Summer Ultra-Ultra-High-Performance (UUHP) Original Equipment passenger car tire engineered specifically for high-end sports cars and performance vehicles. In size 255/55ZR20 XL with a (110Y) service description, this tire carries the NC0 Porsche OE designation, making it a factory-approved fitment for select Porsche models. The Ventus S1 Evo Z K129 earned the prestigious Red Dot Design Award in 2021 for its outstanding design and performance.

Key Features:

• Motorsport-Derived Tread Compound: A racing-grade full-silica compound integrates the latest functional polymers, fillers, and natural resins to deliver consistently high grip across a wide range of temperatures and conditions
• Asymmetric Tread Pattern: An asymmetric design with an expanded shoulder width and center rib block maximizes dry grip and cornering stability while maintaining excellent wet-weather traction
• Aramid Hybrid Reinforcement Belt: An aramid composite material in a double-layer carcass prevents heat-induced deformation and diameter growth at high speeds, ensuring precise handling and steering response
• High-Strength Steel Belt & Reinforced Sidewall: Steel reinforcement in the belt and bead areas, combined with a reinforced sidewall, delivers stability at maximum speed and dynamic, sporty cornering behavior
• Optimized Water Evacuation: Three main drainage grooves in the inner tread area rapidly channel water away on wet roads, reducing hydroplaning risk, while broader lateral shoulder grooves further enhance wet grip and tread block stiffness
• Low Noise Design: Outer pitch count is optimized to maintain steering grip in dry cornering while simultaneously reducing pattern noise for a refined cabin experience
• Extra Load (XL) Rating: Reinforced XL construction supports a maximum load of 2,337 lbs (1,060 kg) per tire at up to 50 PSI
• Speed Rating (Y): Rated for sustained speeds exceeding 186 mph (300+ km/h)

Tire Specifications:

• Size: 255/55ZR20
• Service Description: (110Y) XL
• Load Index: 110 — 2,337 lbs max load
• Speed Rating: (Y) — 186+ mph
• Load Range: XL (Extra Load)
• UTQG: 280 AA A
• Tread Depth: 8.5/32"
• Max Inflation: 50 PSI
• Section Width: 11.1" | Overall Diameter: 30.7"
• Measuring Rim Width: 9" | Rim Width Range: 7–9"
• Sidewall: Black Wall (BW)
• OE Designation: NC0 (Porsche)
• Country of Origin: Hungary

The Ventus S1 Evo Z K129 is the ideal choice for drivers of premium performance vehicles who demand OE-grade grip, high-speed stability, and all-weather summer confidence — all backed by Hankook's race-proven engineering.