Tests 64 · 3 tests Owners 63 · 164 reviews
Best test result: #2 of 10 in 2020 Teknikens 17 Inch Summer Tyre Test (rolling resistance)
Relative Score (0–100): 60% professional tests, 40% owner reviews.
Ultrac Vorti is ahead, 78–65
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Tests 64 · 3 tests Owners 63 · 164 reviews
Best test result: #2 of 10 in 2020 Teknikens 17 Inch Summer Tyre Test (rolling resistance)
Tests 78 · 14 tests Owners 79 · 192 reviews
Best test result: #2 of 11 in 2019 Auto Bild Sports Car Tyre Test (straight aqua)
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
| Source | N Fera SU1 | Ultrac Vorti |
|---|---|---|
| Professional tests (TWG score) | 55 | 82 |
| Reviews found online | 64 | 85 |
| Dry Braking (% of best) | 94% | 96% |
| Dry Handling (% of best) | 95% | 99% |
| Source | N Fera SU1 | Ultrac Vorti |
|---|---|---|
| Professional tests (TWG score) | 63 | 82 |
| Reviews found online | 68 | 79 |
| Wet Braking (% of best) | 87% | 100% |
| Wet Handling (% of best) | 95% | 100% |
| Source | N Fera SU1 | Ultrac Vorti |
|---|---|---|
| Reviews found online | 50 | – |
| Source | N Fera SU1 | Ultrac Vorti |
|---|---|---|
| Professional tests (TWG score) | 66 | 77 |
| Reviews found online | 67 | 78 |
| Source | N Fera SU1 | Ultrac Vorti |
|---|---|---|
| Professional tests (TWG score) | 69 | 71 |
| Reviews found online | 69 | – |
| Source | N Fera SU1 | Ultrac Vorti |
|---|---|---|
| Professional tests (TWG score) | 70 | 71 |
| Reviews found online | 61 | 73 |
| Source | N Fera SU1 | Ultrac Vorti |
|---|---|---|
| Reviews found online | 66 | 83 |
| Category | Nexen N Fera SU1 | Vredestein Ultrac Vorti |
|---|---|---|
| Relative Score | 65 | 78 |
| Dry | 59 | 83 |
| Wet | 65 | 81 |
| Snow | 58 | – |
| Comfort | 66 | 77 |
| Noise | 69 | 69 |
| Treadwear | 67 | 72 |
| Handling | 66 | 83 |
Higher is better. The Relative Score follows your weights below; category scores do not change.
Wet grip and treadwear start at “Important” — the two things buyers rank highest. Move the sliders and the scores update instantly.
Neither tire has a score here yet, so this weight changes nothing.
N Fera SU1
Ultrac Vorti
Only categories both tires have data for count toward the headline score.
Each result is shown as % of the best tire in that test. “Same test” rows are the strictest comparison: both tires were measured side by side.
| Discipline | Category | N Fera SU1 | Ultrac Vorti | Δ | Both? |
|---|---|---|---|---|---|
| Dry Braking | Dry | 94% #4/6 · 2023 APAC Tyre Test | 96% #6/20 · 2020 Auto Bild Summer Tyre Test | −2.4 | Different tests |
| Dry Handling | Dry | 95% #4/6 · 2023 APAC Tyre Test | 99% #3/11 · 2018 AMS Summer UHP Tyre Test | −4.3 | Different tests |
| Rolling Resistance | Efficiency | 99% #2/10 · 2020 Teknikens 17 Inch Summer Tyre Test | 65% #20/20 · 2019 Auto Bild Summer Tyre Test | +34.1 | Different tests |
| Noise | Other | 99% #3/6 · 2023 APAC Tyre Test | 100% #2/9 · 2017 Auto Bild UHP Tyre Test | −0.7 | Different tests |
| Overall Ranking | Overall | 38% #14/22 · 2022 Consumer Reports Ultra High Performance Summer Tires | 11% #9/10 · 2020 UHP, UUHP and Track Day Tyre Test | +27.0 | Different tests |
| Straight Aqua | Straight | 98% #5/6 · 2023 APAC Tyre Test | 99% #2/11 · 2019 Auto Bild Sports Car Tyre Test | −0.8 | Different tests |
| Subj. Comfort | Subj | 40% #8/10 · 2020 Teknikens 17 Inch Summer Tyre Test | 88% #6/7 · 2020 EVO UHP Summer Tyre Test | −48.0 | Different tests |
| Subj. Dry Handling | Subj | 95% #5/6 · 2023 APAC Tyre Test | 60% #9/16 · 2018 Test World Summer Tyre Test | +34.6 | Different tests |
| Subj. Wet Handling | Subj | 94% #5/6 · 2023 APAC Tyre Test | 89% #6/7 · 2020 EVO UHP Summer Tyre Test | +4.8 | Different tests |
| Tyre Weight | Tyre | 74% #10/10 · 2020 Teknikens 17 Inch Summer Tyre Test | 84% #10/10 · 2020 UHP, UUHP and Track Day Tyre Test | −9.6 | Different tests |
| Wet Braking | Wet | 87% #10/10 · 2020 Teknikens 17 Inch Summer Tyre Test | 100% #2/9 · 2017 Auto Bild UHP Tyre Test | −13.2 | Different tests |
| Wet Handling | Wet | 95% #3/6 · 2023 APAC Tyre Test | 100% #3/9 · 2017 Auto Bild UHP Tyre Test | −5.3 | Different tests |
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
| Attribute | A · Nexen N Fera SU1 | B · Vredestein Ultrac Vorti |
|---|---|---|
| Category | Summer | Summer |
| Vehicle type | Passenger Car / Crossover | Passenger Car / Crossover |
| Sizes available | 58 | — |
| Rim diameters | 16″ – 24″ | — |
| Tread depth | 9/32″ | — |
| UTQG | 300 A A | — |
| Treadwear warranty | 25,000 mi | — |
| Sidewall | Blackwall | — |
| Max pressure | 51 psi | — |
Nexen N Fera SU1
Vredestein Ultrac Vorti
Winner: Vredestein Ultrac Vorti — better dry, handling and wet. It leads or ties in every category we score.
Vredestein Ultrac Vorti scores 83 vs 59 on dry.
Vredestein Ultrac Vorti scores 83 vs 66 on handling.
Vredestein Ultrac Vorti scores 81 vs 65 on wet.
Vredestein Ultrac Vorti scores 77 vs 66 on comfort.
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Every category score blends two independent signals. 60% comes from professional tire tests (braking distances, lap times, noise measurements), each result compared with every other tire in the same test and newer tests counting more. 40% comes from owner reviews found online, adjusted for how generously each site rates. Both use one scale: the average tested tire gets 70, the best 100. When a tire has only one of the two, the missing half is estimated from the other and the score stays closer to average; with no road test and fewer than five owner reviews it gets no score yet.
Community buzz from Reddit and forums is shown for context only — it never changes the score.