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275-55r18 tires

Ecsta STX KL12

Ultra-high-performance all-season tires provide sporty traction and handling plus quick acceleration and braking in dry, wet, and light winter weather.

Passenger tires are some of the most common tires you'll find on the roads today, and frequently used on coupes, sedans, hatchbacks, minivans, and other passenger vehicles. Passenger tires are available in a wide variety of types, such as all-season, winter, and ultra-high-performance.

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.

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.

Tread Design

Tire Weight

The measurement of width from a tires inner sidewall to the outer sidewall.

Section Width

The range of widths the rim of the vehicle can be for this tire to be safely mounted on.

ENDS IN...

275/55R18 uhp all-season Tires

Vehicle

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Maximum Load Index

Load Range

Speed Rating

Minimum Speed Rating

Kumho Ecsta STX KL12
114V XL | In stock

Category
UHP All Season
Vehicle
Passenger
Mileage Warranty
N/A

Load Index
2601 lbs (114)
Max Speed
149 MPH (V)
Load Range
Extra (XL)
Sidewall
Blackwall
UTQG
420AA
Wet Traction
A
Tread Depth
11/32nds
Inflation Pressure
50 PSI
Part Number
2101383
Tread Design
Directional
Tire Weight
36.7 lbs
Section Width
11.2"
Rim Range
7.50-9.50"
Overall Diameter
29.8"

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ENDS IN...

275/55R18 uhp all-season Tires

Kumho Ecsta STX KL12 114V XL | In stock

CategoryUHP All SeasonVehiclePassengerMileage WarrantyN/A

Load Index2601 lbs (114) Max Speed149 MPH (V) Load RangeExtra (XL) SidewallBlackwall UTQG420AA Wet TractionA Tread Depth11/32nds Inflation Pressure50 PSI Part Number2101383 Tread DesignDirectional Tire Weight36.7 lbs Section Width11.2" Rim Range7.50-9.50" Overall Diameter29.8"

Join the SimpleCrew and get exclusive perks.

Did you find what you were looking for?

Kumho Ecsta STX KL12
114V XL | In stock

Category
UHP All Season
Vehicle
Passenger
Mileage Warranty
N/A

Load Index
2601 lbs (114)
Max Speed
149 MPH (V)
Load Range
Extra (XL)
Sidewall
Blackwall
UTQG
420AA
Wet Traction
A
Tread Depth
11/32nds
Inflation Pressure
50 PSI
Part Number
2101383
Tread Design
Directional
Tire Weight
36.7 lbs
Section Width
11.2"
Rim Range
7.50-9.50"
Overall Diameter
29.8"

Did you find what
you were looking for?