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 Cooper Cobra Radial G/T — 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 + 633 owner reviews. How we score
Add your size for an exact match
/R
Both Amazon links then search this exact size.
TireWheelGuide may earn a commission from purchases made through these links.
Tests – · none yet Owners 72 · 633 reviews
“Here's where the tire started separating on the sidewall. Hard to tell, but it's about 1/8 inch deep.”
Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
-
–
Dry
No comparison74Why this score
Source Turbospeed CR27 Cobra Radial G/T Professional tests (TWG score) – ≈ 72 (est.) Reviews found online – 77 Cobra Radial G/T: 60% × 71.7 (est.) + 40% × 76.7 = 74
No road tests of dry for Cobra Radial G/T. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).
-
–
Wet
No comparison70Why this score
Source Turbospeed CR27 Cobra Radial G/T Professional tests (TWG score) – ≈ 70 (est.) Reviews found online – 70 Cobra Radial G/T: 60% × 70.5 (est.) + 40% × 70.2 = 70
No road tests of wet for Cobra Radial G/T. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).
-
–
Snow
No comparison67Why this score
Source Turbospeed CR27 Cobra Radial G/T Professional tests (TWG score) – ≈ 68 (est.) Reviews found online – 64 Cobra Radial G/T: 60% × 68.3 (est.) + 40% × 64.1 = 67
No road tests of snow for Cobra Radial G/T. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.37).
-
–
Comfort
No comparison73Why this score
Source Turbospeed CR27 Cobra Radial G/T Professional tests (TWG score) – ≈ 70 (est.) Reviews found online – 75 Cobra Radial G/T: 40% × 70.3 (est.) + 60% × 75.4 = 73
No road tests of comfort for Cobra Radial G/T. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
-
–
Noise
No comparison72Why this score
Source Turbospeed CR27 Cobra Radial G/T Professional tests (TWG score) – ≈ 67 (est.) Reviews found online – 81 Cobra Radial G/T: 60% × 66.6 (est.) + 40% × 81.3 = 72
No road tests of noise for Cobra Radial G/T. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.
-
–
Treadwear
No comparison68Why this score
Source Turbospeed CR27 Cobra Radial G/T Professional tests (TWG score) – ≈ 67 (est.) Reviews found online – 70 Cobra Radial G/T: 60% × 67.4 (est.) + 40% × 69.9 = 68
No road tests of treadwear for Cobra Radial G/T. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).
-
–
Handling (owners)
No comparison68Why this score
Source Turbospeed CR27 Cobra Radial G/T Reviews found online – 68
Scores at a glance
| Category | Avon Turbospeed CR27 | Cooper Cobra Radial G/T |
|---|---|---|
| Relative Score | – | 71 |
| Dry | – | 74 |
| Wet | – | 70 |
| Snow | – | 67 |
| Comfort | – | 73 |
| Noise | – | 72 |
| Treadwear | – | 68 |
| Handling (owners) | – | 68 |
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
–
/ 100
Turbospeed CR27
71
/ 100
Cobra Radial G/T
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 Cobra Radial G/T
Pros
- Attractive classic styling with raised white letters
- Great value and budget-friendly pricing compared to competitors
- Good dry traction and responsive handling
Cons
- Road noise can be noticeable on certain highway surfaces
- Balancing difficulties or minor vibrations reported by some users
- Sub-optimal wet weather traction under aggressive driving or heavy acceleration
What real owners are saying
From Reddit, forums and review threads. Not part of our score
Tire A
Avon Turbospeed CR27
We haven't collected enough community discussion about this tire yet.
Tire B
Positive
Cooper Cobra Radial G/T
Community sentiment toward the Cooper Cobra Radial G/T is generally favorable, especially among vintage vehicle and classic truck owners seeking period-correct raised white lettering. Drivers praise the tire for reliable road traction, longevity, and affordability compared to competitors, though isolated reports note sidewall separation or blister concerns.
corvetteforum.com
“i have 4 new ones sitting in my garage. back in all black. says cooper cobra radial G/T. and it has 2 cobra snakes on it”
vintage-mustang.com
·2015-11-30
“Here's where the tire started separating on the sidewall. Hard to tell, but it's about 1/8 inch deep.”
corvetteforum.com
·2003-09-30
“I have Cooper Cobras on my '65 roadster and, at the time I bought mine, they could be ordered with or without the white lettering. I have the blackwalls with a raised outline of the "snake" figure which doesn't show up from a distance but looks "cool" up close and personal! I have put about 10,000 miles on them in the past 4 years and they still look great and perform fantastically on the road and at the strip! (only a couple of times at the strip, though!) The Coopers are/were used by the CA State Patrol for many years (and still may be...?) and I've had the BFGs separate at high speed on the deserts of CA, NV and AZ but never the Coopers (yet!)... ;) ) [Modified by vettewine, 1:04 PM 9/30/2003] [Modified by vettewine, 1:04 PM 9/30/2003]”
Top themes
#classic muscle aesthetics#raised white lettering#traction and performance#vintage fitment sizing#durability and wear#sidewall separation issues
Based on 30 community posts
Specs side by side
| Attribute | A · Avon Turbospeed CR27 | B · Cooper Cobra Radial G/T |
|---|---|---|
| Category | Summer Touring tires | Touring All Season tire |
| Vehicle type | Passenger Car / Crossover | Passenger Car / Crossover |
| Sizes available | — | 13 |
| Rim diameters | — | 14″ – 15″ |
| Tread depth | — | 11/32″ |
| UTQG | — | 440 A B - C |
| Treadwear warranty | — | 40,000 mi |
| Sidewall | — | Raised White Lettering |
| Max pressure | — | 36 - 44 psi |
Which one should you actually buy?
–
/ 100
Avon Turbospeed CR27
71
/ 100
Cooper Cobra Radial G/T
Only Cooper Cobra Radial G/T 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 · Cooper Cobra Radial G/T
TireWheelGuide may earn a commission from purchases made through these links.
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