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National Trail Guide AP: treadwear rating & UTQG grades
Grade summary
Key facts
| Treadwear (NHTSA UTQG) | 400median · range 400 · band 400–499 |
|---|---|
| Traction grade(s) | Traction A |
| Temperature grade(s) | Temp B |
| Percentile (all lines) | Median treadwear higher than 42% of 3,020 lines |
| Rank within National | #23 of 27 rated lines (by median treadwear) |
| NHTSA records | 5 total; 5 name a specific size (5 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 400: 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 B: B: passed the 500 rpm stage but not the 575 rpm stage.
- Ranked just above in National: Venezia (median 420).
- Ranked just below in National: Viago A/S (median 400).
NHTSA records for National Trail Guide AP
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 |
|---|---|---|---|
| 235/70R16 | 400 | Traction A | Temp B |
| 235/75R15 | 400 | Traction A | Temp B |
| 245/70R16 | 400 | Traction A | Temp B |
| 255/70R16 | 400 | Traction A | Temp B |
| 265/70R16 | 400 | Traction A | Temp B |
Compare this line with others in the same size: 235/70R16, 235/75R15, 245/70R16, 255/70R16, 265/70R16.
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 National lines by treadwear
| Rank | Line | Median treadwear |
|---|---|---|
| 1 | Trailcutter AT4S | 660Treadwear |
| 2 | Trail Guide HLT | 600Treadwear |
| 3 | Tour Max GFT (T-rated) | 500Treadwear |
| 4 | Trail Guide All Terrain | 500Treadwear |
| 5 | Ultrex Tour ASR T-rated | 500Treadwear |
| 6 | Wild Spirit HTS-C | 500Treadwear |
| 7 | Wild Spirit Radial ATS | 500Treadwear |
| 8 | Wild Spirit Sport CXV | 500Treadwear |
| 9 | Wild Spirit Sport HXT | 500Treadwear |
| 10 | Tempra Radial SUV P-metric | 460Treadwear |
| 11 | Tour Max GFT (H-rated) | 460Treadwear |
| 12 | Ultrex Tour ASR H-rated | 460Treadwear |
Similar treadwear from other brands
Other lines in the same treadwear band (400–499) with a page here: Bridgestone POTENZA RE97AS (400), Bridgestone TURANZA EL450 (400), Continental ProContact RX (400), Cyclone Radial SUV (400), Cyclone Ultra Tour (VR) (400), Dunlop SP SPORT MAXX 060 (400).
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 National Trail Guide AP?
NHTSA's UTQG data lists a single treadwear grade of 400 for the National Trail Guide AP, from 5 records. Treadwear is graded in multiples of 20 relative to a government control tire graded 100; it is not a mileage guarantee.
Is the National Trail Guide AP treadwear grade high or low?
A grade of 400 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 42% of lines (dataset median 420). Within National it ranks #23 of 27.
What is the cost per mile of the National Trail Guide AP?
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.