Tests 56 · 2 tests Owners 65 · 13 reviews
Toyo NanoEnergy R38 looks discontinued: no new owner reviews or road tests in five years and no current EU tyre label.
Head-to-head
Updated
Goodyear Assurance WeatherReady vs Toyo NanoEnergy R38 — Compared
Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews. Based on 2 + 0 road tests and 13 + 8 owner reviews. How we score
NanoEnergy R38 is ahead, 70–62
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Tests – · none yet Owners 70 · 8 reviews
Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
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49
Dry
NanoEnergy R38 +2271Why this score
Source Assurance WeatherReady NanoEnergy R38 Professional tests (TWG score) · 2 / – tests 41 ≈ 70 (est.) Reviews found online 61 72 Assurance WeatherReady: 60% × 40.7 + 40% × 60.5 = 49
NanoEnergy R38: 60% × 69.5 (est.) + 40% × 72.2 = 71
No road tests of dry for NanoEnergy R38. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.40).
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71
Wet
NanoEnergy R38 +172Why this score
Source Assurance WeatherReady NanoEnergy R38 Professional tests (TWG score) · 1 / – tests 72 ≈ 72 (est.) Reviews found online 70 73 Assurance WeatherReady: 60% × 72.3 + 40% × 69.7 = 71
NanoEnergy R38: 60% × 71.7 (est.) + 40% × 73.2 = 72
No road tests of wet for NanoEnergy R38. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.56).
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58
Snow
No comparison–Why this score
Source Assurance WeatherReady NanoEnergy R38 Professional tests (TWG score) · 2 / – tests 55 – Reviews found online 64 – Assurance WeatherReady: 60% × 55 + 40% × 63.7 = 58
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65
Comfort
NanoEnergy R38 +469Why this score
Source Assurance WeatherReady NanoEnergy R38 Professional tests (TWG score) ≈ 68 (est.) ≈ 69 (est.) Reviews found online 61 69 Assurance WeatherReady: 60% × 67.7 (est.) + 40% × 60.7 = 65
NanoEnergy R38: 60% × 69.1 (est.) + 40% × 69.1 = 69
No road tests of comfort for Assurance WeatherReady or NanoEnergy R38. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
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65
Noise
No comparison–Why this score
Source Assurance WeatherReady NanoEnergy R38 Professional tests (TWG score) ≈ 67 (est.) – Reviews found online 62 – Assurance WeatherReady: 60% × 67.3 (est.) + 40% × 62.4 = 65
No road tests of noise for Assurance WeatherReady. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.
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67
Treadwear
Assurance WeatherReady +265Why this score
Source Assurance WeatherReady NanoEnergy R38 Professional tests (TWG score) ≈ 66 (est.) ≈ 65 (est.) Reviews found online 67 65 Assurance WeatherReady: 60% × 66.1 (est.) + 40% × 67.2 = 67
NanoEnergy R38: 60% × 65.3 (est.) + 40% × 64.6 = 65
No road tests of treadwear for Assurance WeatherReady. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).
No road tests of treadwear for NanoEnergy R38. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).
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67
Handling (owners)
NanoEnergy R38 +471Why this score
Source Assurance WeatherReady NanoEnergy R38 Reviews found online 67 71
Scores at a glance
| Category | Goodyear Assurance WeatherReady | Toyo NanoEnergy R38 |
|---|---|---|
| Relative Score | 62 | 70 |
| Dry | 49 | 71 |
| Wet | 71 | 72 |
| Snow | 58 | – |
| Comfort | 65 | 69 |
| Noise | 65 | – |
| Treadwear | 67 | 65 |
| Handling (owners) | 67 | 71 |
Higher is better. The Relative Score follows your weights below; category scores do not change.
Weight the categories that matter to you
Wet grip starts at “Important”. Treadwear starts at “Neutral” here: road tests measured it for at most one of the two tires, so it rests on owner reviews. Move the sliders and the scores update instantly.
Important
NotLessNeutralImportantMost
Important
NotLessNeutralImportantMost
Neutral
NotLessNeutralImportantMost
Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.
Less important
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.
Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Recomputed
Headline score
62
/ 100
Assurance WeatherReady
70
/ 100
NanoEnergy R38
Only categories both tires have data for count toward the headline score.
Pros, cons & observations
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
Tire A Assurance WeatherReady
Pros
- Excellent traction and handling in rain, snow, and winter weather conditions
- Comfortable ride quality with low road noise
- Stable and dependable braking performance
Cons
- Premature tread wear with some sets failing well under 30,000 miles
- Uneven wear issues reported by multiple users despite regular rotations
- Softer tread compound can pick up rocks, cause vibrations, and increase susceptibility to punctures
Tire B NanoEnergy R38
Pros
- Reliable wet and dry grip with predictable handling limits
- Good value for money compared to premium brand alternatives
- Solid longevity and mileage, with respectable tread wear reported
Cons
- Slightly increased road noise reported by some users
- Limited size or availability challenges noted by consumers wanting replacements
Specs side by side
| Attribute | A · Goodyear Assurance WeatherReady | B · Toyo NanoEnergy R38 |
|---|---|---|
| Category | All Weather | Summer |
| Vehicle type | Passenger Car / Crossover | Passenger Car / Crossover |
| Sizes available | 34 | — |
| Rim diameters | 15″ – 20″ | — |
| Tread depth | 10 - 11/32″ | — |
| UTQG | 700 A A | — |
| Treadwear warranty | 60,000 mi | — |
| Sidewall | Black Side Wall - Vertical Serrated Band | — |
| Max pressure | 50 - 51 psi | — |
Which one should you actually buy?
62
/ 100
Goodyear Assurance WeatherReady
70
/ 100
Toyo NanoEnergy R38
Winner: Toyo NanoEnergy R38 — better dry and comfort. Where the Goodyear Assurance WeatherReady is ahead, it is by less than 3 points. Toyo NanoEnergy R38 rests on little evidence so far (0 tests, 8 reviews), so read this result as provisional.
Pick tire B
You want the most grip on dry roads
Toyo NanoEnergy R38 scores 71 vs 49 on dry.
Pick tire B
You want the most comfortable ride
Toyo NanoEnergy R38 scores 69 vs 65 on comfort.
Tire A · Goodyear Assurance WeatherReady
Tire B · Toyo NanoEnergy R38
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Assurance WeatherReady or NanoEnergy R38?
Which is better in the wet, Assurance WeatherReady or NanoEnergy R38?
Neither, by our numbers: 71 vs 72 on the wet score, within 3 points.
Which grips better on dry roads, Assurance WeatherReady or NanoEnergy R38?
Toyo NanoEnergy R38, 71 vs 49 on our dry score.
Which is more comfortable, Assurance WeatherReady or NanoEnergy R38?
Toyo NanoEnergy R38, 69 vs 65 on our comfort score.
Which lasts longer, Assurance WeatherReady or NanoEnergy R38?
Neither, by our numbers: 67 vs 65 on the treadwear score, within 3 points.
How do we compare tires?
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.
Handling is the exception: road tests measure it inside the dry and wet scores, so its own row comes from owner ratings only and starts as less important.
Community buzz from Reddit and forums is shown for context only — it never changes the score. Full methodology