AutoView's 2025 extreme-performance shootout takes three of the most aggressive R-compound-flavoured summer tires available in the Korean market - the Nexen N'Fera SUR4G, the Bridgestone Potenza RE71RS and the Yokohama Advan A052 - and runs them on a BMW M3 (G80) in 275/35R19. The SUR4G is the staple of Korean sprint racing and goes in as the domestic benchmark; the RE71RS and A052 are the imported reference tires against which it has to defend that reputation. Michelin declined to send a Pilot Sport Cup 2 / 2R for this round, citing a worry about being beaten by tires with prior test wins overseas - so the obvious fourth contender is missing, but the three that did show up cover the price/performance spectrum cleanly.
The headline result is a narrow win for the Bridgestone Potenza RE71RS: shortest dry stop, shortest wet stop, and the fastest single lap of Korea International Circuit at Yeongam - 1:25.15, just 0.01 s clear of the Yokohama Advan A052. That gap is well inside AutoView's 0.03 s dead-heat threshold, so on outright pace those two tires are effectively tied; the RE71RS earns the overall by carrying its advantage into the braking columns as well. The Nexen N'Fera SUR4G is 1.25 s adrift on lap time, has the longest dry stop, and lacks the steering directness of the imports - but it also stays consistent across all three laps where both rivals fade, is the quietest of the three on highway pavement, and remains the obvious value pick for repeated track-day use.
Test setup & methodology
The test setting, the conditions recorded and how the results contribute to the score.
Recorded test conditions
Recorded test conditions
- Dry Braking
- 62.1 → 0.0 mph
- Wet Braking
- 49.7 → 0.0 mph
Objective braking and skidpad work was done at KATRI on the M3 at factory cold pressures; the circuit session was run separately at Yeongam with AutoView's Jeon In-ho driving on a hot day with track surface temperatures over 50 °C. AutoView also captured tire weight, tread thickness, weight-to-weight deviation across the set, and a 25 mph coast-down rolling-resistance proxy in the video, none of which convert cleanly into our breakdown units - the relevant observations from those are folded into the per-tire commentary below.
Dry braking
The RE71RS pulls up roughly two meters shorter than the SUR4G - a wider margin than expected on what is supposed to be the home-market tire's strongest test.
Dry Braking
Dry braking in feet (62 - 0 mph)
Lower is better ↓| Position / Tire | Result | Gap to best | Residual speed |
|---|---|---|---|
| 101 ft | Best | 0 mph | |
| 105 ft | +4 ft | 15 mph | |
| 107 ft | +6 ft | 19 mph |
The difference between best and worst was 6.2% (6 ft ≈ 0.4 Car Lengths). From 80 mph, the Nexen N Fera SUR4G would still be travelling at 19 mph when the Bridgestone Potenza RE 71RS had stopped.
Residual speed is calculated from the measured braking distances, assuming constant deceleration; it is not a separate measurement.
Wet braking
Wet braking from 50 mph on a depth-controlled flooded surface. The order reshuffles in the lower placings: the Bridgestone holds its lead, but the SUR4G beats the A052 by nearly two meters here. The thin, narrow-grooved A052 tread shows its limits in standing water.
Wet Braking
Wet braking in feet (50 - 0 mph)
Lower is better ↓| Position / Tire | Result | Gap to best | Residual speed |
|---|---|---|---|
| 91 ft | Best | 0 mph | |
| 95 ft | +4 ft | 17 mph | |
| 101 ft | +10 ft | 25 mph |
The difference between best and worst was 11.2% (10 ft ≈ 0.7 Car Lengths). From 80 mph, the Yokohama Advan A052 would still be travelling at 25 mph when the Bridgestone Potenza RE 71RS had stopped.
Residual speed is calculated from the measured braking distances, assuming constant deceleration; it is not a separate measurement.
Dry handling - Yeongam circuit
Three flying laps on the full 2 miles Korea International Circuit at Yeongam, with the best lap from each tire recorded below. The RE71RS and A052 both peaked on their opening flying lap and fell off about a second on lap two; the SUR4G held its time consistently across all three laps but ~1.25 s slower than the imports. AutoView also ran a 98 ft skidpad to find the lateral-grip limit on each tire - all three carried essentially the same ~42 mph before sliding, so steady-state lateral grip on its own doesn't separate them; the difference is what they do around the limit.
Dry Handling
Dry handling time in seconds
Lower is better ↓| Position / Tire | Result | Gap to best |
|---|---|---|
| 85.15 s | Best | |
| 85.16 s | +0.01 s | |
| 86.41 s | +1.26 s |
All the tires in the Dry Handling test finished less than 3% apart.
Results
The Bridgestone Potenza RE71RS takes the overall on combined braking and one-lap pace, the Yokohama Advan A052 ties on lap time but loses both braking columns and degrades hardest, and the Nexen N'Fera SUR4G is the value and durability pick - slower, but the only tire on the test you would happily lap on all afternoon.
Bridgestone Potenza RE 71RS
275/35R19
Category scores (% of best)
All discipline results (3)
Discipline positions compare the ranked tires in this test, not the whole market. These are individual measurements, not weighted overall scores.
| Test | Position in discipline | Result | Gap to best |
|---|---|---|---|
| Dry BrakingLower is better | 1st / 3 | 101 ft | Best in this discipline |
| Dry HandlingLower is better | 1st / 3 | 85.15 s | Best in this discipline |
| Wet BrakingLower is better | 1st / 3 | 91 ft | Best in this discipline |
Yokohama Advan A052
275/35R19
Category scores (% of best)
All discipline results (3)
Discipline positions compare the ranked tires in this test, not the whole market. These are individual measurements, not weighted overall scores.
| Test | Position in discipline | Result | Gap to best |
|---|---|---|---|
| Dry BrakingLower is better | 2nd / 3 | 105 ft | +4 ft |
| Dry HandlingLower is better | 2nd / 3 | 85.16 s | +0.01 s |
| Wet BrakingLower is better | 3rd / 3 | 101 ft | +10 ft |
Nexen N Fera SUR4G
275/35R19
Category scores (% of best)
All discipline results (3)
Discipline positions compare the ranked tires in this test, not the whole market. These are individual measurements, not weighted overall scores.
| Test | Position in discipline | Result | Gap to best |
|---|---|---|---|
| Dry BrakingLower is better | 3rd / 3 | 107 ft | +6 ft |
| Dry HandlingLower is better | 3rd / 3 | 86.41 s | +1.26 s |
| Wet BrakingLower is better | 2nd / 3 | 95 ft | +4 ft |
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