American
9 tire lines and 19 grade rows in the NHTSA ratings file. Treadwear spans 300–660.
About this data
These are rows in NHTSA's ratings list, under the brand string that list stores. The list does not say whether a tire is still sold, and it has no category field. Light-truck tires, deep-tread winter-type snow tires, and temporary spare tires are outside the UTQG rule, so a missing line is not a grade. Sorting these rows is an ordering of NHTSA's list, not a ranking of the best tire. Data last verified October 21, 2026 (UTC). Data-quality notes.
| Tire line | Size rows | Treadwear | Traction | Temperature |
|---|---|---|---|---|
| BRONZE | 2 | 320–360 | A | C |
| GOLD TOUR PLUS 60/65 ser. | 1 | 600 | A | B |
| GOLD TOUR PLUS 70/75 ser. | 3 | 560–660 | A | B |
| GT GRAND TURBO | 2 | 440–480 | A | B |
| GT GRAND TURBO HR4 | 1 | 400 | A | A |
| GT GRAND TURBO ZR4 | 1 | 300 | AA | A |
| PROSPECTOR A/P LT | 1 | 420 | A | C |
| PROSPECTOR A/T LT | 7 | 500 | A | BC |
| SILVER | 1 | 480 | A | B |