The Ecsta Sport A/S is Kumho's Ultra High Performance All-Season tire developed for the drivers of sporty coupes, sports cars and performance sedans who want satisfying driving dynamics without giving up a quiet, comfortable ride. Designed to be proficient in the rain, while still combining the responsive handling and high-speed traction expected of a year-round performance tire, the Ecsta Sport A/S can be used in dry, wet and wintry conditions, even in light snow.
The high-grip resin compound of the Ecsta Sport A/S uses a performance-focused mix of silica and polymers to improve dry grip, handling, and wear life, which is then molded into an asymmetric tread pattern optimized for driver comfort and control. The outside shoulders has been stiffened and strengthened to help resist deformation during cornering and aggressive driving. Rounded block edges disperse impacts from uneven roads, and K-Noise Defender technology inside the grooves uses airflow-disrupting dimples to minimize noise and enhance comfort. The high silica content in the compound improves wet traction, and four wide, circumferential grooves and open shoulder slots help evacuate water to increase hydroplaning resistance. Zig-zag grooves offer grip in snowy conditions, and 3-D interlocking sipes provide the biting edges needed for traction in snow and on ice while minimizing tread block movement.
Utilizing two polyester plies for the casing helps the Ecsta Sport A/S balance comfort and durability, and the two wide, steel belts are reinforced by a single, polyamide cap ply that aids steering response and provides high-speed capability.
Los neumáticos Ultra Alto Rendimiento Para Toda Estación, han sido fabricados para conductores entusiastas que desean una combinación de apariencia similar a autos de rendimiento, maniobrabilidad precisa y durabilidad a velocidades del código Z (o mayor), con tracción durante todas las estaciones del año, incluyendo superficies cubiertas con poca nieve. Estos neumáticos poseen el símbolo M+S (lodo y nieve) y son utilizados comúnmente como originales (O.E., por sus siglas en inglés) en autos deportivos, cupé de rendimiento y sedanes de alto rendimiento.
Los neumáticos originales (O.E.) Ultra Alto Rendimiento Para Toda Estación, son comprados usualmente para reemplazar pares o juegos de cuatro originales que se han desgastado. Pueden ser usados en otros vehículos, en pares o grupos de cuatro, si tienen el tamaño, índice de carga y código de velocidad, igual al de la categoría de rendimiento y especificaciones de los neumáticos originales.
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 tires may vary from what is shown. Unfortunately, we cannot accommodate requests for tires with a specific country of origin.
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Treadwear:6 Years / 50,000 Miles Half mileage if different size front/rear tires
Manufacturer Special Warranty:30-Day Satisfaction Trial (1)
Additional Information:(1) Must purchase 4 and have less than 1/32" wear.
Notes
See official manufacturer's warranty brochure for specific details.
New vehicle Original Equipment tire warranties often differ from those covering replacement tires. Consult your vehicle documents to confirm Original Equipment tire warranty coverage.
Tire Rack Test Results Kumho Ecsta Sport A/S
Are EV-Specific Tires Better than Popular Non-EV Tires? – 2025 Test 1 - With Winter Update(39:48)
In the first test of 2025, we run it back with EV vs non-EV tires with an eleven-tire, five-category grouping. Using our pair of Teslas, we delve into efficiency, road characteristics, wet and dry handling/braking, and of course, the overall rankings when combined! Including a final chart with tires from 2024 added! Sit back, relax, and enjoy the first test of 2025!
This tire hasn't received enough consumer feedback to be rated.
Bridgestone Potenza S001 RFT Reviews
Customer ratings showcase the Bridgestone Potenza S001 RFT as a strong performer in its Max Performance Summer category, with excellent dry traction (scores 8-10) and confident wet grip (7-9) aligning with its intended use. Drivers praise responsive handling and stability in warm conditions. Comfort receives mixed feedback, with many noting a smooth, quiet ride (7-9) but a minority reporting harshness (scores as low as 0-2). Treadwear shows polarized feedback: some highlight durability (8-10), while others report quicker wear (scores 0-3), suggesting variability based on driving style or conditions. Overall, it satisfies summer-focused drivers prioritizing grip and performance, though comfort and longevity may vary.
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Customers Like:
109 reviews mention "Wet Traction"
98 positive
11 negative
Most customers rate the Bridgestone Potenza S001 RFT's wet traction highly, with scores of 8-10 highlighting confident grip and responsive handling in rainy conditions. While a few ratings dip to 5-7, the majority reflect strong wet performance expected from a Max Performance Summer tire.
September 09, 2013
(Verified Purchase)
4 out of 5
...They are great in the rain at interstate speeds of 70+ mph. I've been in some heavy stuff, and I've been happy with what I've seen...
These are the factory-installed OEM performance tires for my F30 328i M Sport running the 400M style staggered 18" wheels. Running 225/45-18 Front, 255/40-18 Rear. I was apprehensive at first because I was expecting the Pirelli Cinturato RFTs and instead got Bridgestones. My mom's E90 328i had the previous generation Bridgestone RFTs, and they were very poor tires with rock hard side-walls and unimpressive handling. My BMW dealer assured me that the new generation Bridgestones were improved. They were right, because this tire is a far cry from earlier models. Handling and responsiveness is good, and being that these are performance run-flats, the quality is pretty impressive. They are great in the rain at interstate speeds of 70+ mph. I've been in some heavy stuff, and I've been happy with what I've seen. The traction is solid in most conditions, but these tires will break loose at the first hint of sand or dirt on the road. Another issue is something I've seen from Bridgestones- they don't talk to you. Some tires will talk and make noise as you pull near the threshold of grip. These tires make very little noise until right before the tires break loose, which is fortunately higher than expected. I hit a lot of freeway cloverleaf ramps at speed, and these tires will hold pretty high speeds, so all is not lost. The biggest issue you will always have with RFTs is the ride quality. The ride comfort is significantly better and more compliant than previously, and for a RFT they're very good. Still, you feel all of the bumps and road imperfections with these. It's unavoidable. Treadwear is marginal. Middle of tires are 9/32 (-10%). Insides and outsides of tires are at 7/32 (-30%). Wear rate is pretty even, and I suspect I'll get about 15,000 miles out of these tires before they need replacing.
Vehicle: 2013 BMW 328i Sedan M Sport Line Staggered Tires Miles Driven on Tires: 6,200 Driving Conditions: Mostly Highway Location: PLYMOUTH, MN Driving Style: Spirited
Most customers rate dry traction as excellent, with scores of 9s and 10s highlighting responsive handling and reliable grip in dry conditions, as expected from a Max Performance Summer tire.
December 31, 2024
(Verified Purchase)
4.4 out of 5
...Flooring it around a cloverleaf or driving 'spiritedly' on a canyon road, these tires grip well and I haven't heard them squeal yet...
These tires were recommended for my vehicle ('17 BMW 430i) and I'll buy them again next time around - they are quiet on the highway, communicate well to the driver via the steering wheel, and seem to keep gripping in the situations I've been in. Flooring it around a cloverleaf or driving "spiritedly" on a canyon road, these tires grip well and I haven't heard them squeal yet. They're not cheap but in this case you get what you pay for, and that seems to be a lot!
Vehicle: 2017 BMW 430i Gran Coupe M Sport Pkg Staggered Tires Miles Driven on Tires: 10,000 Driving Conditions: Combined Highway/City Location: OXNARD, CA Driving Style: Spirited
Most customers rate ride comfort and noise levels highly, with scores mostly 7-10. High marks highlight smooth handling and refined noise reduction, aligning well with summer tire expectations.
106 reviews mention "Treadwear"
68 positive
38 negative
Most customers rate treadwear highly with scores of 9-10, praising durability in summer driving. While some report lower scores (0-6), the majority highlight long-lasting performance for max performance use.
March 15, 2017
(Verified Purchase)
4.6 out of 5
...At 33,000 miles they are pretty much shot but I was expecting only 20,000 since they are a max perf summer tire so I'm pretty happy with the wear. I drive a 40 mile round trip commute mostly highway which may account for the longer wear life...
These are the tires that the car came with new from factory. At 33,000 miles they are pretty much shot but I was expecting only 20,000 since they are a max perf summer tire so I'm pretty happy with the wear. I drive a 40 mile round trip commute mostly highway which may account for the longer wear life. I take curvy back roads rarely but do drive spiritedly when doing so. I've never had a problem with traction dry or wet but we've been in a drought. My car also has standard suspension and only 18"s so the ride is pretty comfortable for a sport suspension to begin with. Even now, the tires aren't that noisy. Overall pretty happy with this set of tires, I'll have to replace them with the same tires since I'm returning the lease and there aren't many alternatives for OEM BMW tires in this particular size. If I was keeping the car, I'd get a set of non-RFTs.
Vehicle: 2015 BMW 435i Gran Coupe M Sport Line Staggered Tires Miles Driven on Tires: 33,000 Driving Conditions: Mostly Highway Location: SAN DIEGO, CA Driving Style: Spirited
...The fronts are wearing well. The rears need to be replaced... Which at this point would be minimal since the wear bars are almost even...
Purchased a full set of tires. The fronts are wearing well. The rears need to be replaced. I'm told there is no tread life warranty. Which at this point would be minimal since the wear bars are almost even. This was a bad purchase. If I'd had these tires for a year or so, I'd feel as though I got my money's worth. If I'd actually obtained some real mileage, I'd feel different. If the wear was even front to back, I'd feel different.
This was a bad purchase.
Vehicle: 2018 Mercedes-Benz S450 Sedan Miles Driven on Tires: 3,000 Driving Conditions: Combined Highway/City Location: DALLAS, GA Driving Style: Easy Going
...That said, they don't last long. Maybe 22,000 miles...
I like the Potenza S0001 a lot. They are OEM so I bought them again. They look aggressive and really fill the wheel well. It also has great rim protection, with a noticeable lip. The traction is amazing and they are not loud until they get worn down. That said, they don’t last long. Maybe 22,000 miles. Since I switch to winter tires and don’t drive as many miles as I used to, I figure these will last a while. Another con is that they are expensive, but if they are good enough for Alfa Romeo engineers to put on one of their sportiest models, they’re the right tires for me.
Vehicle: 2017 Alfa Romeo Giulia Miles Driven on Tires: 309 Driving Conditions: Combined Highway/City Location: ALDIE, VA Driving Style: Spirited
The Ecsta Sport A/S is Kumho’s Ultra High Performance All-Season tire, designed for drivers of sports cars, sporty coupes, and performance sedans. This tire is built for drivers who want satisfying driving dynamics without giving up a quiet, comfortable ride.
Are EV-Specific Tires Better than Popular Non-EV Tires? – 2025 Test 1 - With Winter Update(39:48)
In the first test of 2025, we run it back with EV vs non-EV tires with an eleven-tire, five-category grouping. Using our pair of Teslas, we delve into efficiency, road characteristics, wet and dry handling/braking, and of course, the overall rankings when combined! Including a final chart with tires from 2024 added! Sit back, relax, and enjoy the first test of 2025!
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