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Tire Tracker

CENTENIAL

C/INT

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

C/INT Z

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

C/INT ZRX

Size Temperature Rating Traction Rating Treadwear Rating
All others
C B A
C B A AA
P205/55ZR15
C B A
C B A AA

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