Tests 71 · 1 test Owners 66 · 137 reviews
Best test result: #3 of 20 in 2018 Auto Bild 15 inch Summer Tyre Test (rolling resistance)
Relative Score (0–100): 60% professional tests, 40% owner reviews.
Energy Saver leads, 68–65 Narrow edge
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Tests 71 · 1 test Owners 66 · 137 reviews
Best test result: #3 of 20 in 2018 Auto Bild 15 inch Summer Tyre Test (rolling resistance)
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 per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
| Source | Energy Saver | N Fera SU1 |
|---|---|---|
| Professional tests (TWG score) | 70 | 55 |
| Reviews found online | 66 | 64 |
| Dry Braking (% of best) | 92% | 94% |
| Dry Handling (% of best) | 98% | 95% |
| Source | Energy Saver | N Fera SU1 |
|---|---|---|
| Professional tests (TWG score) | 70 | 63 |
| Reviews found online | 66 | 68 |
| Wet Braking (% of best) | 89% | 94% |
| Wet Handling (% of best) | 95% | 95% |
| Source | Energy Saver | N Fera SU1 |
|---|---|---|
| Reviews found online | – | 50 |
| Source | Energy Saver | N Fera SU1 |
|---|---|---|
| Professional tests (TWG score) | – | 66 |
| Reviews found online | 66 | 67 |
| Source | Energy Saver | N Fera SU1 |
|---|---|---|
| Professional tests (TWG score) | 72 | 69 |
| Reviews found online | 62 | 69 |
| Source | Energy Saver | N Fera SU1 |
|---|---|---|
| Professional tests (TWG score) | 73 | 70 |
| Reviews found online | 68 | 61 |
| Source | Energy Saver | N Fera SU1 |
|---|---|---|
| Reviews found online | 63 | 66 |
| Category | Michelin Energy Saver | Nexen N Fera SU1 |
|---|---|---|
| Relative Score | 68 | 65 |
| Dry | 69 | 59 |
| Wet | 68 | 65 |
| Snow | – | 58 |
| Comfort | 68 | 66 |
| Noise | 68 | 69 |
| Treadwear | 71 | 67 |
| Handling | 63 | 66 |
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.
Energy Saver
N Fera SU1
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 | Energy Saver | N Fera SU1 | Δ | Both? |
|---|---|---|---|---|---|
| Dry Braking | Dry | 92% #13/20 · 2018 Auto Bild 15 inch Summer Tyre Test | 94% #4/6 · 2023 APAC Tyre Test | −1.8 | Different tests |
| Dry Handling | Dry | 98% #7/20 · 2018 Auto Bild 15 inch Summer Tyre Test | 95% #4/6 · 2023 APAC Tyre Test | +3.5 | Different tests |
| Rolling Resistance | Efficiency | 88% #3/20 · 2018 Auto Bild 15 inch Summer Tyre Test | 99% #2/10 · 2020 Teknikens 17 Inch Summer Tyre Test | −11.2 | Different tests |
| Noise | Other | 99% #5/20 · 2018 Auto Bild 15 inch Summer Tyre Test | 99% #3/6 · 2023 APAC Tyre Test | −0.4 | Different tests |
| Overall Ranking | Overall | 20% #5/20 · 2018 Auto Bild 15 inch Summer Tyre Test | 20% #5/6 · 2023 APAC Tyre Test | 0.0 | Different tests |
| Straight Aqua | Straight | 95% #8/20 · 2018 Auto Bild 15 inch Summer Tyre Test | 92% #10/10 · 2020 Teknikens 17 Inch Summer Tyre Test | +2.6 | Different tests |
| Wet Braking | Wet | 89% #17/20 · 2018 Auto Bild 15 inch Summer Tyre Test | 94% #5/6 · 2023 APAC Tyre Test | −5.0 | Different tests |
| Wet Handling | Wet | 95% #16/20 · 2018 Auto Bild 15 inch Summer Tyre Test | 95% #3/6 · 2023 APAC Tyre Test | +0.8 | Different tests |
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
| Attribute | A · Michelin Energy Saver | B · Nexen N Fera SU1 |
|---|---|---|
| Category | Summer | Summer |
| Vehicle type | Passenger Car / Crossover | Passenger Car / Crossover |
| Sizes available | 4 | 97 |
| Rim diameters | 15″ – 16″ | 15″ – 24″ |
| Tread depth | — | 9/32″ |
| UTQG | — | 300 A A |
| Treadwear warranty | — | 25,000 mi |
| Sidewall | — | Blackwall |
| Max pressure | — | 51 psi |
Michelin Energy Saver
Nexen N Fera SU1
Winner: Michelin Energy Saver — better dry, treadwear and wet. Pick the Nexen N Fera SU1 if handling matters most to you.
Michelin Energy Saver scores 69 vs 59 on dry.
Michelin Energy Saver scores 71 vs 67 on treadwear.
Michelin Energy Saver scores 68 vs 65 on wet.
Nexen N Fera SU1 scores 66 vs 63 on handling.
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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.