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The Ecsta ASX (ASX for All-Season Xtreme) (KU21) is a member of Kumho's race-proven Ecsta high performance tire family. It is an Ultra High Performance All-Season tire that was developed to meet the needs of the drivers of sports cars, coupes and sedans by blending responsive handling with dry, wet and year-round traction, even in light snow.
On the outside, the Ecsta ASX molds a high technology silica and carbon tread compound into an asymmetric tread design that features large outside tread blocks for quick response and sporty handling with high volume circumferential and high angle slant grooves to resist hydroplaning and enhance wet traction. Constant contact center blocks help reduce noise while providing continuous road contact to improve straight-line stability. Internally, Ecsta ASX tires feature Kumho's Dynamic Casing Shape Technology that controls casing tension throughout the tire. This allows the Ecsta ASX to increase ride comfort by absorbing bumps and increase handling by remaining stable when cornering. Ecsta ASX tires feature twin, high-tensile steel belts with spiral-wrapped jointless cap and belt edge strips to stabilize the tread area enhancing handling, high-speed capability and ride quality while minimizing weight.
Los neumáticos Kumho han demostrado su alto rendimiento en carrera de autos. Ahora presentan la Ecsta ASX (KU21), este neumático pertenece a la categoría: Ultra Alto Rendimiento Para Toda Estación y fue diseñado para cumplir con las prioridades de los conductores de autos deportivos, cupé y sedán. Ofrece una excelente respuesta al girar el volante y provee tracción en suelos secos, mojados o con poca nieve.
La banda de rodamiento construida con tecnología avanzada contiene silicona y carbón los cuales mezclados en un diseño asimétrico forman bloques largos en la parte exterior para una respuesta más rápida y un manejo más deportivo. Los surcos circunferenciales de gran volumen y los inclinados en ángulos altos ayudan a resistir el deslizamiento en agua (hydroplaning) y dan mayor tracción en suelos mojados. Los bloques en el centro proveen contacto constante con la carretera lo que mejora la estabilidad en línea recta y también ayudan a reducir el ruido del neumático.
El diseño interno utiliza la tecnología Kumho (Dynamic Casing Shape) que controla la tensión de la carcasa en todo el neumático. Esto permite que la Ecsta ASX ofrezca un manejo cómodo amortiguando los topetazos y permaneciendo estable al tomar curvas. Ecsta ASX posee bandas gemelas de acero de alta resistencia a la tensión enrolladas en espiral sin necesidad de juntas. Correas de refuerzo de los bordes estabilizan la banda de rodamiento a mayor velocidad aumentando la maniobrabilidad, control y calidad del manejo, a la vez que disminuye el peso.
Which of these tires are available in my size?
Tires available in your current size are marked with a blue dot ( ).
| All Other Sizes for this Tire |
|
Size
Service Description
Load Range |
UTQG |
Max
Load |
Max.
Inflation
Press. |
Tread
Depth |
Tire
Weight |
Rim
Width
Range |
Meas.
Rim
Width |
Sect.
Width |
Tread
Width |
Overall
Diam. |
Revs
Per
Mile |
Country
of Origin* |
Load Index 88 = 1235lbs (560kg) per tire
Speed Rating “V” = 149mph (240kph)
88V
SLMax Load = 1,235 lbs
Max psi = 51 psi
|
Treadwear: 420
Traction: AA
Temperature: A420 AA A
|
1235 lbs.
|
51 psi
|
10.5/32"
|
20 lbs.
|
5.5-7.5"
|
6.5"
|
8.4"
|
NA
|
23.9"
|
NA
|
Country of Origin "KR" = KOREA, REPUBLIC OFKR
|
Load Index 84 = 1102lbs (500kg) per tire
Speed Rating “W” = 168mph (270kph)
84W
SLMax Load = 1,102 lbs
Max psi = 51 psi
|
Treadwear: 420
Traction: AA
Temperature: A420 AA A
|
1102 lbs.
|
51 psi
|
10/32"
|
19 lbs.
|
5.5-7"
|
6"
|
7.9"
|
NA
|
23.7"
|
NA
|
Country of Origin "KR" = KOREA, REPUBLIC OFKR
|
Load Index 87 = 1201lbs (545kg) per tire
Speed Rating “W” = 168mph (270kph)
87W
SLMax Load = 1,201 lbs
Max psi = 51 psi
|
Treadwear: 420
Traction: AA
Temperature: A420 AA A
|
1201 lbs.
|
51 psi
|
10/32"
|
20 lbs.
|
5.5-7.5"
|
6.5"
|
8.4"
|
NA
|
24.1"
|
NA
|
Country of Origin "KR" = KOREA, REPUBLIC OFKR
, Country of Origin "CN" = CHINACN
|
Load Index 90 = 1323lbs (600kg) per tire
Speed Rating “W” = 168mph (270kph)
90W
SLMax Load = 1,323 lbs
Max psi = 51 psi
|
Treadwear: 420
Traction: AA
Temperature: A420 AA A
|
1323 lbs.
|
51 psi
|
10.5/32"
|
22 lbs.
|
6-7.5"
|
7"
|
8.9"
|
NA
|
24.5"
|
NA
|
Country of Origin "KR" = KOREA, REPUBLIC OFKR
|
Load Index 95 = 1521lbs (690kg) per tire
Speed Rating “W” = 168mph (270kph)
95W
SLMax Load = 1,521 lbs
Max psi = 51 psi
|
Treadwear: 420
Traction: AA
Temperature: A420 AA A
|
1521 lbs.
|
51 psi
|
10.5/32"
|
24 lbs.
|
6-8"
|
7"
|
9.2"
|
7.8"
|
25.8"
|
NA
|
Country of Origin "KR" = KOREA, REPUBLIC OFKR
|
Load Index 94 = 1477lbs (670kg) per tire
Speed Rating “W” = 168mph (270kph)
94W
SLMax Load = 1,477 lbs
Max psi = 51 psi
|
Treadwear: 420
Traction: AA
Temperature: A420 AA A
|
1477 lbs.
|
51 psi
|
10.5/32"
|
27 lbs.
|
8.5-10"
|
9"
|
10.2"
|
NA
|
25"
|
NA
|
Country of Origin "KR" = KOREA, REPUBLIC OFKR
, Country of Origin "CN" = CHINACN
|
Load Index 98 = 1653lbs (750kg) per tire
Speed Rating “W” = 168mph (270kph)
98W
SLMax Load = 1,653 lbs
Max psi = 51 psi
|
Treadwear: 420
Traction: AA
Temperature: A420 AA A
|
1653 lbs.
|
51 psi
|
10.5/32"
|
28 lbs.
|
8-9.5"
|
8.5"
|
10"
|
NA
|
26.1"
|
NA
|
Country of Origin "KR" = KOREA, REPUBLIC OFKR
|
Load Index 101 = 1819lbs (825kg) per tire
Speed Rating “W” = 168mph (270kph)
101W
SLMax Load = 1,819 lbs
Max psi = 51 psi
|
Treadwear: 420
Traction: AA
Temperature: A420 AA A
|
1819 lbs.
|
51 psi
|
10.5/32"
|
30 lbs.
|
7-9"
|
8"
|
10.4"
|
NA
|
27.1"
|
NA
|
Country of Origin "KR" = KOREA, REPUBLIC OFKR
|
Load Index 95 = 1521lbs (690kg) per tire
Speed Rating “W” = 168mph (270kph)
95W
RFMax Load = 1,521 lbs
Max psi = 50 psi
|
Treadwear: 420
Traction: AA
Temperature: A420 AA A
|
1521 lbs.
|
50 psi
|
10/32"
|
24 lbs.
|
8-9.5"
|
8.5"
|
9.5"
|
NA
|
25.4"
|
NA
|
Country of Origin "KR" = KOREA, REPUBLIC OFKR
|
Load Index 95 = 1521lbs (690kg) per tire
Speed Rating “W” = 168mph (270kph)
95W
SLMax Load = 1,521 lbs
Max psi = 51 psi
|
Treadwear: 420
Traction: AA
Temperature: A420 AA A
|
1521 lbs.
|
51 psi
|
10/32"
|
30 lbs.
|
9-11"
|
9.5"
|
11"
|
9"
|
25.6"
|
NA
|
Country of Origin "KR" = KOREA, REPUBLIC OFKR
, Country of Origin "CN" = CHINACN
|
Load Index 95 = 1521lbs (690kg) per tire
Speed Rating “W” = 168mph (270kph)
95W
SLMax Load = 1,521 lbs
Max psi = 51 psi
2008 Production
|
Treadwear: 420
Traction: AA
Temperature: A420 AA A
|
1521 lbs.
|
51 psi
|
10/32"
|
29 lbs.
|
8-9.5"
|
8.5"
|
9.7"
|
NA
|
28"
|
742
|
Country of Origin "KR" = KOREA, REPUBLIC OFKR
|
Load Index 101 = 1819lbs (825kg) per tire
Speed Rating “W” = 168mph (270kph)
101W
SLMax Load = 1,819 lbs
Max psi = 51 psi
|
Treadwear: 420
Traction: AA
Temperature: A420 AA A
|
1819 lbs.
|
51 psi
|
10.5/32"
|
33 lbs.
|
8-9.5"
|
8.5"
|
10"
|
9.6"
|
29"
|
716
|
Country of Origin "KR" = KOREA, REPUBLIC OFKR
|
Load Index 92 = 1389lbs (630kg) per tire
Speed Rating “W” = 168mph (270kph)
92W
XLMax Load = 1,389 lbs
Max psi = 50 psi
|
Treadwear: 420
Traction: AA
Temperature: A420 AA A
|
1389 lbs.
|
50 psi
|
10.5/32"
|
30 lbs.
|
8-9"
|
8.5"
|
9.7"
|
NA
|
27.8"
|
747
|
Country of Origin "KR" = KOREA, REPUBLIC OFKR
|
Load Index 95 = 1521lbs (690kg) per tire
Speed Rating “W” = 168mph (270kph)
95W
XLMax Load = 1,521 lbs
Max psi = 50 psi
|
Treadwear: 420
Traction: AA
Temperature: A420 AA A
|
1521 lbs.
|
50 psi
|
10.5/32"
|
31 lbs.
|
8.5-9.5"
|
9"
|
10.2"
|
NA
|
28"
|
742
|
Country of Origin "KR" = KOREA, REPUBLIC OFKR
|
Size
Service Description
Load Range |
UTQG |
Max
Load |
Max.
Inflation
Press. |
Tread
Depth |
Tire
Weight |
Rim
Width
Range |
Meas.
Rim
Width |
Sect.
Width |
Tread
Width |
Overall
Diam. |
Revs
Per
Mile |
Country
of Origin* |
| [-] Hide |
NOTES:
Specifications shown are as accurate as possible based on the information provided to us by the tire manufacturers. The dimensions reflect average values for tires measured on the specified measuring rim width. Individual tires may vary from data shown.
All tires are subject to continuous development. The tire manufacturers and Tire Rack reserve the right to change product specifications at any time without notice or obligation.
*Although regularly updated, the country of origin for any tire may vary from the country shown here. Unfortunately, we cannot accommodate requests for tires with a specific country of origin.
If you have a specific concern please email sales@tirerack.com.
Results based on 3753 submissions of our online tire survey. |
 |
| Surveyed Averages |
11 |
88% |
7.4 |
7.8 |
7.8 |
8.1 |
8.5 |
8.1 |
6.4 |
5.3 |
5.4 |
8.1 |
7.9 |
7.3 |
39,183,343 |
| Color Key |
Superior (8.6-10) |
Fair (2.6-4.5) |
Excellent (6.6-8.5) |
Unacceptable (0-2.5) |
Good (4.6-6.5) |
Would You Buy This Tire Again?
Most said: "Probably" (Average of 7.4 out of 10)
How Did This Tire Rank In Its Category?
11 out of 27 tires (Score of 7.3 vs best tire in category score of 8.3)
See a Full List of Survey Results for Ultra High Performance All-Season Tires
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Numerical Average : 7.3 / 10
(out of 3753 customer reviews)
Stars : 3.5 / 5
Most Recent Reviews
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Reviewer's Overall Rating: |
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Warranty for replacement tires purchased on or after 02/06/13
Warranty for replacement tires purchased between 04/01/12 and 02/05/13
Warranty for replacement tires purchased between 06/01/11 and 03/31/12
Warranty for replacement tires purchased between 04/01/10 and 05/31/11
*Tire Rack's Tire Warranty Rating is an overall rating given to tire warranties after subjectively evaluating their value for the consumer. Warranties are rated on a scale of 0-5 with 5 being the highest. This rating combines all of the aspects of each tire's warranty where applicable, including: mileage/treadlife, materials and workmanship, balance and uniformity, replacement tire cost, warranty duration and any special manufacturer's warranties that apply. See official manufacturer's warranty brochure for specific details.
NOTE: New vehicle Original Equipment tire warranties often differ from those covering replacement tires. Consult your vehicle documents to confirm Original Equipment tire warranty coverage.
The Original Equipment applications for this tire are not available online at this time. Please call 888-541-1777 to speak with one of our sales specialists. We apologize for any inconvenience this may cause.
