Tests – · none yet Owners – · 1 review (needs 5)
Avon Turbospeed CR27 looks discontinued: no new owner reviews or road tests in five years and no current EU tyre label.
Head-to-head
Updated
Avon Turbospeed CR27 vs Nitto Invo — Compared
Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews (comfort 40/60). Based on 0 + 0 road tests and 1 + 38 owner reviews. How we score
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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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Dry
No comparison66Why this score
Source Turbospeed CR27 Invo Professional tests (TWG score) – ≈ 67 (est.) Reviews found online – 66 Invo: 60% × 67.1 (est.) + 40% × 65.6 = 66
No road tests of dry for Invo. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).
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Wet
No comparison63Why this score
Source Turbospeed CR27 Invo Professional tests (TWG score) – ≈ 65 (est.) Reviews found online – 60 Invo: 60% × 64.9 (est.) + 40% × 60.2 = 63
No road tests of wet for Invo. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).
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Snow
No comparison52Why this score
Source Turbospeed CR27 Invo Professional tests (TWG score) – ≈ 59 (est.) Reviews found online – 40 Invo: 60% × 59.2 (est.) + 40% × 39.9 = 52
No road tests of snow for Invo. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.37).
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Comfort
No comparison65Why this score
Source Turbospeed CR27 Invo Professional tests (TWG score) – ≈ 68 (est.) Reviews found online – 63 Invo: 40% × 67.9 (est.) + 60% × 62.6 = 65
No road tests of comfort for Invo. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
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Noise
No comparison71Why this score
Source Turbospeed CR27 Invo Professional tests (TWG score) – ≈ 67 (est.) Reviews found online – 77 Invo: 60% × 66.6 (est.) + 40% × 77.1 = 71
No road tests of noise for Invo. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.
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Treadwear
No comparison57Why this score
Source Turbospeed CR27 Invo Professional tests (TWG score) – ≈ 61 (est.) Reviews found online – 51 Invo: 60% × 61 (est.) + 40% × 51.3 = 57
No road tests of treadwear for Invo. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).
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Handling (owners)
No comparison64Why this score
Source Turbospeed CR27 Invo Reviews found online – 64
Scores at a glance
| Category | Avon Turbospeed CR27 | Nitto Invo |
|---|---|---|
| Relative Score | – | 62 |
| Dry | – | 66 |
| Wet | – | 63 |
| Snow | – | 52 |
| Comfort | – | 65 |
| Noise | – | 71 |
| Treadwear | – | 57 |
| Handling (owners) | – | 64 |
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
Less important
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Recomputed
Headline score
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/ 100
Turbospeed CR27
62
/ 100
Invo
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 Turbospeed CR27
Pros
- Period-correct aesthetic for classic luxury vehicles
- Original equipment specification for specific vintage models
Cons
- High cost of replacement
- Susceptibility to sidewall cracking and aging over long durations
- Limited modern performance benchmarks
Tire B Invo
Pros
- Exceptional initial ride comfort and smoothness
- Very quiet and low road noise when new
- Strong dry traction and cornering grip for spirited driving
Cons
- Dramatically reduced wet and dry grip as the tire wears down
- Rapid tread wear and limited overall longevity
- Develops severe road noise, whining, or harsh vibrations over time
Specs side by side
| Attribute | A · Avon Turbospeed CR27 | B · Nitto Invo |
|---|---|---|
| Category | Summer Touring tires | Summer |
| Vehicle type | Passenger Car / Crossover | Passenger Car / Crossover |
| Sizes available | — | 39 |
| Rim diameters | — | 17″ – 22″ |
| Tread depth | — | 10.3/32″ |
| UTQG | — | 220 A A |
| Sidewall | — | Blackwall |
| Max pressure | — | 50 psi |
Which one should you actually buy?
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/ 100
Avon Turbospeed CR27
62
/ 100
Nitto Invo
Only Nitto Invo has enough test and review data for a Relative Score, so there is no head-to-head winner yet.
Tire A · Avon Turbospeed CR27
Tire B · Nitto Invo
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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