Name: Ecsta ASX KU21
Brand: Kumho
Rating: 4.3 (2 reviews)

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# Performance tires
Performance tires are commonly used on sports cars and performance-oriented vehicles. Ideal for use in above freezing temperatures, performance tires typically allow drivers to bring out the sporty handling, braking, and steering of their ride, and are able to perform in dry and wet conditions that are common with warmer weather. 

Performance tires are made by a variety of tire manufacturers, including <a title="Shop for Yokohama Performance Tires" href="/brands/yokohama-tires/categories/performance">Yokohama</a>, <a title="Shop for Bridgestone Performance Tires" href="/brands/bridgestone-tires/categories/performance">Bridgestone</a>, <a title="Shop for Toyo Performance Tires" href="/brands/toyo-tires/categories/performance">Toyo</a>, <a title="Shop for Pirelli Performance Tires" href="/brands/pirelli-tires/categories/performance">Pirelli</a> and <a title="Shop for Kumho Performance Tires" href="/brands/kumho-tires/categories/performance">Kumho</a>. 

If you're looking to buy performance tires online then you've come to the right place, as SimpleTire has thousands of performances tires that meet your driving needs and budget.

[Performance tire reviews](https://simpletire.com/categories/performance-tires/reviews)

A Closeup of a Performance Tire on a Performance Car

Performance tires

primary

Ecsta ASX KU21

Drivers of sports cars, coupes, and sedans often want a tire that performs year round. Consider the Ecsta ASX KU21 from Kumho, which is built with a special rubber compound that enhances traction in dry, wet, and light snow conditions. Large outside tread blocks maximize cornering performance, and the Ecsta ASX KU21's multi-zone tread contour improves comfort and handling capabilities. The Ecsta ASX KU21 includes circumferential grooves within the tread that quickly drain water for better resistance to hydroplaning, and variable pitch tread blocks that work with cross-grooves to reduce road noises for a quiet, comfortable ride.

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Best Rated Performance Tires

SVT-01

Performance tires are designed for use on sports cars and performance-oriented vehicles. These tires are usually at their best in above freezing temperatures, and offer drivers responsive handling, improved acceleration, and strong braking capabilities.

Vehicle

This product is not covered by a manufacturer’s treadlife warranty.

Mileage Warranty

The maximum carrying capacity for a tire determined by the manufacturer.

Load Index

Maximum speed capability to safely carry a load for an extended period of time.

Max Speed

The maximum load carrying strength at the specified inflation pressure, also known as ply rating.

Load Range

The side of the tire between the tread and rim, with cosmetic branding as well as information about the tire including manufacturer, model, size, etc.

Sidewall

Standards that measure treadwear, temperature resistance and traction, example: "640 A A".  The 640 is the treadwear test and it lasted 6.4 times longer than the comparison tire tested against.  The first "A" is the traction rating using straight-line wet traction on test surfaces (see information tables tab) and the second "A" is the temperature rating by testing operation at high speeds without heat-related failure (see information tables tab).

UTQG

Wet Traction is a piece of the UTQG for example if  UTQG is: 500 AA A, the wet traction piece is the second piece, the "AA".

Wet Traction

Measured in 32nds of an inch, this metric shows how much tread life is left on a tire, with the tire's traction & stopping capabilities greatly diminished at 4/32nds and less. Tire manufacturers include "tire wear bars" at 2/32nds to indicate when your tire is worn out.

Tread Depth

The highest inflation pressure (measured in pounds of force per square inch, PSI) the tire is designed to contain, and should only be used when called for by the vehicle placard.

Inflation Pressure

An identifier of a particular tire line and size combination assigned by the tire manufacturer.

Part Number

Tread design (or tread pattern) can affect handling, traction & noise for different driving styles & road conditions.

Kumho Ecsta ASX KU21 Reviews

SimpleScore™

Score breakdown:

7.4

Good

9.0

Excellent

8.6

Great

2 reviews

4.3

100%

Review breakdown

Scorecard

Dry

Wet

Winter

Comfort

Noise

Treadwear

2 SimpleTire reviews

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