The Ecsta XS (eXtreme Street) (KU36) is Kumho’s Extreme Performance Summer tire developed for passionate driving enthusiasts looking to make the most of their vehicle’s capabilities in competition, at the track or on the street.
The Ecsta XS is designed to deliver Kumho's ultimate level of dry road performance while maintaining wet traction.
Like all summer tires, the Ecsta XS is not intended to be driven in near-freezing temperatures, through snow or on ice.
The Ecsta XS molds Kumho's high-grip synthetic resin enhanced tread compound into an asymmetric pattern that features wide outboard shoulders to deliver dry road responsiveness and cornering, along with a continuous center rib that offers linear handling and high-speed stability.
Two wide circumferential center grooves and an inboard network of aggressive lateral aqua grooves enhance wet capability.
The tire's structure includes two high-tensile steel belts reinforced by spirally wound nylon to provide excellent strength, uniform ride quality and high-speed capability while the sidewalls are tuned to resist lateral deflection and to provide handling control and positive feedback.
EU Tyre Label and Efficiency Classes
The European Union has introduced the EU Tyre Label by Regulation (No. 1222/2009) identically and bindingly for all EU member states. It applies to passenger car tyres, light commercial vehicle tyres and heavy commercial vehicle tyres produced after 01.07.2012.
Three different areas are tested: rolling resistance, wet grip and the rolling noise the tyre makes on the road.
The following are not affected by the EU Tyre Label: retreaded tyres, professional off-road tyres, racing tyres, tyres with additional devices to improve traction such as spiked tyres, T-type emergency tyres, special tyres for fitting to vehicles first registered before 1 October 1990, tyres with a maximum authorised speed of 80 km/h, tyres for rims with a nominal diameter of 254 mm or less or 635 mm or more.
With this regulation, the European Union is pursuing the goal of promoting economic and ecological efficiency in road traffic as well as increasing road safety on the one hand, and on the other hand, granting consumers more product transparency and at the same time serving as an active decision-making aid.
Already during the incorporation, experts criticise the fact that the EU Tyre Label unfortunately only shows a few product characteristics. Apart from rolling resistance, wet grip and rolling noise, which are the main focus of EU tyre labelling, tyres have much more important and safety-relevant product characteristics, such as aquaplaning properties, driving stability, service life, braking properties on dry and wet roads, behaviour in wintry conditions, etc.
Tyre manufacturers point out that test results from various institutions and journals remain an important information medium for the end consumer. These tests usually focus on further safety-relevant product characteristics besides the EU standard qualifications for tyre labelling, which are always important for the final customer.
EcstaXSKU36 tyre review
Average based on 53 test results
Grip in dry conditions
Braking in dry conditions
Grip in wet conditions
Braking in wet conditions
Grip in snow
Driving comfort
Internal noise level
Tyre wear
Fuel consumption
Kilometers driven
7,474
27.12.2014 from wjp excellent track day tires also used on street
31.03.2012 from LuczOr Much better treadwear than expected. Incredible lateral grip.
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