Kumho Ecsta PS91 Ultra High Performance Summer Tire

The Kumho Ecsta PS91 is an ultra high performance summer tire purpose-built for supercar and high-performance vehicle enthusiasts who demand exceptional grip, precise handling, and unwavering stability at extreme speeds. Drawing on Kumho's deep motorsport heritage, the Ecsta PS91 is engineered for both spirited street driving and track use — delivering race-inspired confidence through advanced construction technologies and a dedicated summer tread compound.

Key Technologies & Features:

• Asymmetric Tread Design: A non-directional asymmetric tread pattern enhances high-speed stability, cornering grip, and braking efficiency, while also allowing for free tire rotation in any position.
• Silica-Enhanced Summer Compound: A high-functional silica-infused tread compound — blended with carbon black and max grip performance resins — optimizes traction in both dry and wet conditions, while a stiffness-enhanced under-tread maximizes high-speed durability.
• C-Cut 3D Technology: Three-dimensional block geometry boosts tread block stiffness for optimum braking performance and consistent stability under aggressive driving conditions.
• 3D Dimple Heat Dissipation: Heat-releasing dimple technology maximizes thermo-diffusion across the tread footprint, minimizing internal heat buildup and preserving block durability at sustained high speeds.
• Stiff Carcass Construction: A twin steel belt package reinforced with a spirally wrapped nylon cap maintains tire shape under high-speed cornering loads, contributing to sharp steering response and precise handling feel.
• Compounded Rib Configuration: A continuous center rib tread design enhances steering responsiveness and driving stability by maintaining consistent road contact at speed.
• Circumferential Grooves: Wide circumferential grooves and lateral notches efficiently evacuate water from the contact patch, reducing hydroplaning risk in wet conditions.
• Enhanced Rim Protector: An optimized bead construction with an improved rim protector provides higher transverse strength and added protection against curb damage.
• Race-Inspired Aesthetics: Cosmetic racing-flag tread indentations and a checkered sidewall design reflect the tire's ultra-high performance character and exotic supercar positioning.

Summer Performance — Important Notice:

As a dedicated ultra high performance summer tire, the Ecsta PS91 uses a performance-optimized rubber compound that is not intended for use in temperatures consistently below 45°F (7°C). For best performance and safety, this tire should be replaced with all-season or winter tires during cold weather months. This tire does not carry a mileage warranty.

Warranty Coverage:

The Kumho Ecsta PS91 is backed by Kumho's Road Hazard Warranty. If an eligible tire becomes irreparably damaged due to a road hazard (such as nails, glass, or potholes), it will be replaced free of charge within the first 2/32" of original tread depth and 12 months from the date of purchase. All Kumho brand passenger tires are additionally covered for a maximum of 72 months from the date of purchase.

Whether attacking canyon roads or pushing limits on track day, the Ecsta PS91 delivers the confident dry traction, wet grip, and tactile steering feedback that performance enthusiasts demand — all at a compelling value within the max performance summer tire segment.