Name: Ecsta AST KU25
Brand: Kumho
Rating: 4.6 (113 reviews)

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# UHP tires
Ultra-high-performance (UHP) tires are commonly used on sports, super, and performance oriented cars. Ideal for use in warmer weather, UHP tires allow for sporty handling, quicker braking and accelerating, and responsive steering to help drivers see how powerful their vehicle truly is. 

Typically featuring a <a title="What are Tire Speed Ratings?" href="/learn/tire-buying-guides/tire-speed-rating">speed rating</a> of V or greater, UHP tires often have a wide footprint and low profile, and are used on powerful vehicles such like <a title="Shop for Corvette Tires" href="/vehicles/chevrolet-tires/corvette">Corvettes</a>,  <a title="Shop for Mustang Tires" href="/vehicles/ford-tires/mustang">Mustangs</a>,  <a title="Shop for Camaro Tires" href="/vehicles/chevrolet-tires/camaro">Camaros</a>, and so on. UHP tires should not be used or stored in below freezing temperatures. 

A variety of tire manufacturers make UHP tires including <a title="Shop for Yokohama UHP Tires" href="/brands/yokohama-tires/categories/uhp">Yokohama</a>, <a title="Shop for Bridgestone UHP Tires" href="/brands/bridgestone-tires/categories/uhp">Bridgestone</a>, <a title="Shop for Continental UHP Tires" href="/brands/continental-tires/categories/uhp">Continental</a> and <a title="Shop for Pirelli UHP Tires" href="/brands/pirelli-tires/categories/uhp">Pirelli</a>. 

If you're looking for a set of UHP tires online then you've come to the right place, as SimpleTire has thousands of ultra-high-performance tires that meet your driving needs and budget.

[UHP tire reviews](https://simpletire.com/categories/uhp-tires/reviews) 

Closeup of an Ultra High Performance Tire on a Porsche

UHP tires

primary

Ecsta AST KU25

Whether commuting to work, taking a road-trip, or simply running some errands, today's drivers often long for a tire that's built to perform in any weather conditions. Fortunately, all season tires are built with these drivers in mind and the Ecsta AST KU25 from Kumho features a special rubber compound that allows for strong traction year round. Built with an ultra-hard bead filler that enhances grip and high speed durability, the Ecsta AST KU25's shoulder block design is meant to prevent heel to toe wear while also strengthening traction in wet and snowy weather.

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Best Rated UHP Tires

Ecsta V720 ACR

LG27

Ultra High Performance (or UHP) tires have a speed rating of V or greater and are used on sports cars, super cars, and other powerful vehicles. Commonly featuring a wide footprint and low profile, UHP tires provide excellent traction and steering response but should not be used when temperatures are at 40 degrees or below.

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

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.

Rim Range

The diameter of a tire that is inflated without any load applied.

Overall Diameter

The Kumho Ecsta AST KU25 tires are generally well-received for their performance, longevity, and value. They are particularly popular among Can-Am Spyder owners as a cost-effective alternative to OEM tires. While most users are satisfied with the tires' handling, comfort, and durability, a small number of customers reported disappointment or manufacturing issues.

Ecsta AST KU25 Reviews

113 reviews