Kumho Ecsta ASX KU21 Ultra High Performance All-Season Tire

The Kumho Ecsta ASX KU21 is an Ultra High Performance All-Season tire engineered for driving enthusiasts who refuse to compromise between spirited handling and year-round capability. Part of Kumho's race-proven Ecsta performance tire family, the ASX KU21 delivers outstanding wet and dry grip alongside competent light-snow traction — offering the crisp steering response and all-season versatility that sports cars, coupes, and performance sedans demand every day.

Advanced Tread Technology:

• Asymmetrical tread design optimizes performance across dry, wet, and light-snow conditions while supporting cross-rotation for reduced noise and extended treadwear
• High-tech silica compound strikes the ideal balance between wet and snow traction, treadwear longevity, and fuel efficiency
• Large outside tread blocks maximize cornering grip and lateral stability during spirited driving
• High-angle slant grooves and circumferential channels deliver aggressive water evacuation to resist hydroplaning
• E-technology step grooves and sipes multiply biting edges for enhanced wet and light-winter traction
• Variable pitch tread blocks work with cross-grooves to minimize road noise for a quieter, more refined ride

Performance-Oriented Construction:

• Multi-zone tread contour delivers dynamic casing control for improved ride comfort and handling balance
• ESCOT (Enhancing Sidewall and Casing Optimization Technology) optimizes casing tension distribution, balancing compliant cruising with performance-oriented responsiveness
• Twin high-tensile steel belts with jointless cap and belt edge strips stabilize the tread area, enhancing high-speed capability, handling precision, and ride quality while minimizing weight
• Integrated rim protector in the lower sidewall helps shield wheels from curb and road damage

Warranty Coverage:

• 30,000-mile limited treadwear warranty
• Road Hazard Protection included

From rain-soaked city streets and winding backroads to light winter commutes, the Kumho Ecsta ASX KU21 delivers the precise control and all-season confidence that performance-minded drivers expect — backed by Kumho's decades of motorsport-derived engineering at an exceptional value.