Bridgestone Potenza Sport vs. Kumho Ecsta Sport — A new challenger enters the ultra-high performance arena! Bridgestone’s Potenza Sport has long been the benchmark in the UHP summer category, known for its razor-sharp dry grip and dynamic stability. But now, Kumho strikes back with the newly launched Ecsta Sport — and it’s already making waves with strong wet performance that rivals even the premium giants. Can this rising star take down the reigning champ? Let the UHP showdown begin!
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Results: Bridgestone Potenza Sport vs Kumho Ecsta Sport
The results featured here are from the 2025 Die-Reifentester Summer Tire Test, with 8 model of the finest tires were tested. The accompanying graph presents a side-by-side comparison of the Bridgestone Potenza Sport vs Kumho Ecsta Sport across various performance categories, with the Bridgestone Potenza Sport serving as the benchmark at the 100% mark.
For subjective ratings, the test uses a simple 1-5 scale: 5 (Very Good), 4 (Good), 3 (Satisfactory), 2 (Adequate), and 1 (Poor), replacing the traditional 10-point system for clarity. The tire size of interest is the 225/40R18 tire size, a popular choice for vehicles like the BMW 3 series Audi A4. For further insights into various tire sizes, feel free to consult our latest tire size table. The tests were conducted using a standard Volkswagen Golf as the test vehicle.
Wet
In wet braking, the Kumho Ecsta Sport stops 0.51 meters shorter than the Bridgestone Potenza Sport, a 2% improvement. For wet handling, Kumho scores 5 out of 5, while Bridgestone trails with 4 out of 5, showing a clear 5% subjective edge for the newcomer. Even in straight-line aquaplaning, Kumho holds a slight advantage with a slipping speed of 77.9 km/h compared to 77.6 km/h for Bridgestone — a negligible 0% difference.
From a wet performance standpoint, the Kumho Ecsta Sport has made an impressive entrance. It not only brakes shorter but also handles better and resists aquaplaning more effectively than the established Potenza Sport. A serious wet-weather contender in the UHP class.
Ecsta Sport :
- +2% in wet braking
- +5% in subjective wet handling
- ~0% in straight aquaplaning
Dry
In dry braking, the Bridgestone Potenza Sport stops 1.02 meters shorter than the Kumho Ecsta Sport, giving it a 3% advantage. Both tires are evenly matched in dry handling, each receiving a perfect 5 out of 5 subjective rating.
Ecsta Sport :
- -3% in dry braking
- 0% in subjective dry handling
Noise & Comfort
In terms of comfort, the Bridgestone Potenza Sport scores a full 5 out of 5, while the Kumho Ecsta Sport trails with a 4 — marking a 5% difference in subjective comfort rating. For interior noise, both tires are evenly matched with a 4 out of 5 score.
Ecsta Sport :
- -5% in comfort
- 0% in interior noise
Rolling Resistance
In rolling resistance, the Kumho Ecsta Sport measures 9.13 N/kN compared to Bridgestone Potenza Sport’s 10.42 N/kN. This means Kumho offers 1.29 N/kN lower resistance, translating to a 14% improvement in rolling efficiency.
Ecsta Sport :
- +14% in rolling resistance
Price
For size 225/40 R18, the Kumho Ecsta Sport is priced at €77, while the Pilot Sport 5 costs €106 — making the Kumho 38% cheaper than its Michelin rival.
Tire size: 225/40 R18
- Pilot Sport 5 : € 106
- Ecsta Sport : € 77
Difference: -38% more cheaper for Ecsta Sport
Summary
As a tire expert, I see strong merits in both tires. The Kumho Ecsta Sport surprised me with excellent wet braking, sharp handling, and noticeably lower rolling resistance — all while being 38% more affordable. On the other hand, the Bridgestone Potenza Sport maintains its premium edge with superior dry braking and greater ride comfort.
However, a word of caution — wear performance was not included in this comparison, and long-term durability could significantly shift the value equation. More data is needed before crowning a clear long-term winner.
Dr Edwin Pang