ProPublica

Journalism in the Public Interest

SUMIC

GT50

Size Temperature Rating Traction Rating Treadwear Rating
All others
C B A
C B A AA
P195/50R15
C B A
C B A AA

GT50A

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

GT55

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

GT55A

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

GT60

Size Temperature Rating Traction Rating Treadwear Rating
16
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

GT60A

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

GT65

Size Temperature Rating Traction Rating Treadwear Rating
HR
C B A
C B A AA
HR
C B A
C B A AA
TR
C B A
C B A AA
TR
C B A
C B A AA

GT65A

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

GT70

Size Temperature Rating Traction Rating Treadwear Rating
All others
C B A
C B A AA
P175/70R14
C B A
C B A AA

GT70A

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

GT80

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

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