Prometer · tire line
Prometer SX-608: treadwear rating & UTQG grades
Grade summary
Key facts
| Treadwear (NHTSA UTQG) | 460median · range 320–460 · band 400–499 |
|---|---|
| Traction grade(s) | Traction A |
| Temperature grade(s) | Temp A |
| Percentile (all lines) | Median treadwear higher than 62% of 3,020 lines |
| Rank within Prometer | #2 of 19 rated lines (by median treadwear) |
| NHTSA records | 7 total; 7 name a specific size (7 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 460: 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 Prometer: Avista (median 620).
- Ranked just below in Prometer: SX-608 (H RATED) (median 460).
NHTSA records for Prometer SX-608
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 |
|---|---|---|---|
| 185/60R14 | 460 | Traction A | Temp A |
| 185/65R14 | 460 | Traction A | Temp A |
| 195/60R14 | 460 | Traction A | Temp A |
| 195/60R15 | 460 | Traction A | Temp A |
| 195/65R14 | 460 | Traction A | Temp A |
| 205/65R15 | 460 | Traction A | Temp A |
| 205/60R15 | 320 | Traction A | Temp A |
Compare this line with others in the same size: 185/60R14, 185/65R14, 195/60R14, 195/60R15, 195/65R14, 205/60R15, 205/65R15.
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 Prometer lines by treadwear
| Rank | Line | Median treadwear |
|---|---|---|
| 1 | Avista | 620Treadwear |
| 2 | SX-608 (this page) | 460Treadwear |
| 3 | SX-608 (H RATED) | 460Treadwear |
| 4 | SOLAR 4XS+ | 440Treadwear |
| 5 | SOLAR 4XS+ (H and V rating) | 440Treadwear |
| 6 | Astra | 420Treadwear |
| 7 | MAXIMA RADIAL GTS (T) | 420Treadwear |
| 8 | S990 Performance X/P | 420Treadwear |
| 9 | A/S | 400Treadwear |
| 10 | SOLAR 4XS (S, T rating) | 400Treadwear |
| 11 | SX-1 (H & V RATED) | 340Treadwear |
| 12 | SX-1EVO | 340Treadwear |
Similar treadwear from other brands
Other lines in the same treadwear band (400–499) with a page here: Big O Advantage Touring (460), Bridgestone ECOPIA EP150 (460), Goodride SA07 (460), JK Tyre BLAZZE H/T (460), Nexen ROADIAN HP (460), Phillips PROMETER LL60 (460).
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 Prometer SX-608?
NHTSA's UTQG data lists treadwear grades from 320 to 460 (median 460) for the Prometer SX-608, from 7 records. Treadwear is graded in multiples of 20 relative to a government control tire graded 100; it is not a mileage guarantee.
Is the Prometer SX-608 treadwear grade high or low?
A grade of 460 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 62% of lines (dataset median 420). Within Prometer it ranks #2 of 19.
What is the cost per mile of the Prometer SX-608?
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.