Thunderer · tire line
Thunderer Celsius: treadwear rating & UTQG grades
Grade summary
Key facts
| Treadwear (NHTSA UTQG) | 440median · range 400–440 · band 400–499 |
|---|---|
| Traction grade(s) | Traction A |
| Temperature grade(s) | Temp A |
| Percentile (all lines) | Median treadwear higher than 54% of 3,020 lines |
| Rank within Thunderer | #13 of 36 rated lines (by median treadwear) |
| NHTSA records | 22 total; 22 name a specific size (22 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 440: this is an above-average treadwear grade, typical of many touring and all-season 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 A: A: second-highest wet-braking grade. Traction is straight-ahead wet braking only; it does not measure cornering or hydroplaning.
- Temperature A: A (highest): resisted heat build-up through the higher 575 rpm test stage.
- Ranked just above in Thunderer: SE 65 SERIES (median 460).
- Ranked just below in Thunderer: AMERICA AT 909 (median 420).
NHTSA records for Thunderer Celsius
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 |
|---|---|---|---|
| 185/60R15 84T | 440 | Traction A | Temp B |
| 185/65R14 86H | 440 | Traction A | Temp A |
| 185/65R15 88H | 440 | Traction A | Temp A |
| 195/60R15 88H | 440 | Traction A | Temp A |
| 195/65R15 91H | 440 | Traction A | Temp A |
| 205/55R16 91H | 440 | Traction A | Temp A |
| 205/60R16 92H | 440 | Traction A | Temp A |
| 205/65R15 94H | 440 | Traction A | Temp A |
| 205/65R16 95H | 440 | Traction A | Temp A |
| 215/50R17 91H | 440 | Traction A | Temp A |
| 215/60R16 95H | 440 | Traction A | Temp A |
| 215/60R17 96H | 440 | Traction A | Temp A |
| 215/65R16 98T | 440 | Traction A | Temp B |
| 225/60R16 98H | 440 | Traction A | Temp A |
| 225/60R17 99H | 440 | Traction A | Temp A |
| 235/60R16 100T | 440 | Traction A | Temp B |
| 235/65R16 103T | 440 | Traction A | Temp B |
| 205/70R15 96T | 420 | Traction A | Temp B |
| 215/70R15 98T | 420 | Traction A | Temp B |
| 225/70R15 100T | 420 | Traction A | Temp B |
| 205/75R15 97S | 400 | Traction A | Temp B |
| 235/75R15 105S | 400 | Traction A | Temp B |
Compare this line with others in the same size: 185/60R15, 185/65R14, 185/65R15, 195/60R15, 195/65R15, 205/55R16, 205/60R16, 205/65R15, 205/65R16, 205/70R15, 205/75R15, 215/50R17, 215/60R16, 215/60R17, 215/65R16, 215/70R15, 225/60R16, 225/60R17, 225/70R15, 235/60R16, 235/65R16, 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 (400–499) with a page here: Big O SXP SUPER SPORT (440), Cyclone Radial GT (440), Dimension IV ALL SEASON (440), GENERAL TIRE G-MAX Justice (440), Hankook Optimo H426 (440), JK Tyre UX ROYALE (440).
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 Celsius?
NHTSA's UTQG data lists treadwear grades from 400 to 440 (median 440) for the Thunderer Celsius, from 22 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 Celsius treadwear grade high or low?
A grade of 440 is an above-average treadwear grade, typical of many touring and all-season tires. Compared with every line in the NHTSA data, the median is higher than 54% of lines (dataset median 420). Within Thunderer it ranks #13 of 36.
What is the cost per mile of the Thunderer Celsius?
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.