Thunderer · tire line
Thunderer Classic: treadwear rating & UTQG grades
Grade summary
Key facts
| Treadwear (NHTSA UTQG) | 320median · range 320 · band 300–399 |
|---|---|
| Traction grade(s) | Traction B |
| Temperature grade(s) | Temp B |
| Percentile (all lines) | Median treadwear higher than 26% of 3,020 lines |
| Rank within Thunderer | #25 of 36 rated lines (by median treadwear) |
| NHTSA records | 11 total; 11 name a specific size (11 distinct sizes) |
| Warranty miles | Not shown (no maker-published figure verified) |
| Price | Not shown (varies by size and store); see “Where to buy” |
What these grades mean in plain English
- Treadwear 320: this is a moderate treadwear grade, near the middle of NHTSA-rated tires. Under UTQG a grade of 200 should wear twice as long as the grade-100 control tire on NHTSA's test course; real-world mileage varies with driving, rotation, alignment and climate.
- Traction B: B: middle wet-braking grade. Traction is straight-ahead wet braking only; it does not measure cornering or hydroplaning.
- Temperature B: B: passed the 500 rpm stage but not the 575 rpm stage.
- Ranked just above in Thunderer: Turbo (median 360).
- Ranked just below in Thunderer: A20 (median 300).
NHTSA records for Thunderer Classic
Each row is one NHTSA record as filed by the manufacturer. Sizes are shown exactly as NHTSA lists them; entries such as “All sizes” apply a single grade to several sizes and cannot be matched to one specific size.
| Size (as filed) | Treadwear | Traction | Temperature |
|---|---|---|---|
| P 155/80 R13 | 320 | Traction B | Temp B |
| P 175/70 R13 | 320 | Traction B | Temp B |
| P 185/70 R14 | 320 | Traction B | Temp B |
| P 185/75 R14 | 320 | Traction B | Temp B |
| P 195/70 R14 | 320 | Traction B | Temp B |
| P 195/75 R14 | 320 | Traction B | Temp B |
| P 205/70 R15 | 320 | Traction B | Temp B |
| P 205/75 R14 | 320 | Traction B | Temp B |
| P 205/75 R15 | 320 | Traction B | Temp B |
| P 215/75 R15 | 320 | Traction B | Temp B |
| P 235/75 R15 | 320 | Traction B | Temp B |
Compare this line with others in the same size: 155/80R13, 175/70R13, 185/70R14, 195/70R14, 195/75R14, 205/70R15, 205/75R15, 215/75R15, 235/75R15.
Cost-per-mile calculator
Price and mileage data are pending a licensed feed, so nothing is pre-filled. Enter your own quote and your own mileage expectation (for example the maker's treadwear warranty from the tire's paperwork). Formula: cost per 1,000 miles = price per set ÷ (expected miles ÷ 1,000).
Other Thunderer lines by treadwear
| Rank | Line | Median treadwear |
|---|---|---|
| 1 | 800 ULTRA | 700Treadwear |
| 2 | EXTENSA AS II | 620Treadwear |
| 3 | Celsius II | 560Treadwear |
| 4 | R601 | 560Treadwear |
| 5 | R404 | 540Treadwear |
| 6 | CELSIUS CUV | 520Treadwear |
| 7 | EXTENSA A/S | 490Treadwear |
| 8 | AMERICA SELECTA PUS | 460Treadwear |
| 9 | Corona | 460Treadwear |
| 10 | Deportiva | 460Treadwear |
| 11 | Direccional | 460Treadwear |
| 12 | SE 65 SERIES | 460Treadwear |
Similar treadwear from other brands
Other lines in the same treadwear band (300–399) with a page here: Allegiance IV RADIAL A/S (320), Bridgestone Turanza 6 (320), Goodyear WRANGLER DURATRAC (320), Hankook veNtus evo3 SUV (320), HP259 HP259 (320), Michelin Pilot Sport 4 (320).
Guides that explain these numbers
- What does a tire treadwear rating mean?UTQG basics
- Treadwear rating vs. mileage warrantyTreadwear vs. mileage
- How to make your tires last longerMaintenance
FAQ
What is the treadwear rating of the Thunderer Classic?
NHTSA's UTQG data lists a single treadwear grade of 320 for the Thunderer Classic, from 11 records. Treadwear is graded in multiples of 20 relative to a government control tire graded 100; it is not a mileage guarantee.
Is the Thunderer Classic treadwear grade high or low?
A grade of 320 is a moderate treadwear grade, near the middle of NHTSA-rated tires. Compared with every line in the NHTSA data, the median is higher than 26% of lines (dataset median 420). Within Thunderer it ranks #25 of 36.
What is the cost per mile of the Thunderer Classic?
We do not have a licensed price or warranty-mileage feed yet, so we do not state a cost per mile. Use the formula cost per 1,000 miles = price per set ÷ (expected miles ÷ 1,000) with your own quote and mileage expectation, or the calculator on this page.
Source and caveats
Source: NHTSA tire ratings API, pulled 2026-10-25. Grade definitions: NHTSA TireWise and 49 CFR 575.104. Grades are self-reported by manufacturers. The NHTSA data has no “currently sold” flag (its active field is false on every record), so a listed line may be discontinued. See methodology.