ProPublica

Journalism in the Public Interest

TRIBUNE

CUSTOM

Size Temperature Rating Traction Rating Treadwear Rating
All sizes
C B A
C B A AA

CUSTOM LCR

Size Temperature Rating Traction Rating Treadwear Rating
All sizes
C B A
C B A AA

HP METRIC

Size Temperature Rating Traction Rating Treadwear Rating
All sizes
C B A
C B A AA

HR70 STL RAD

Size Temperature Rating Traction Rating Treadwear Rating
All sizes
C B A
C B A AA

IV PLUS

Size Temperature Rating Traction Rating Treadwear Rating
13
C B A
C B A AA
14 & 15
C B A
C B A AA
14 & 15
C B A
C B A AA

PREMIER IV

Size Temperature Rating Traction Rating Treadwear Rating
13
C B A
C B A AA
14
C B A
C B A AA
15
C B A
C B A AA

Sources: NHTSA Uniform Tire Quality Grading Standards, TireReview.com