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PENSKE

ECONOMIZER

Size	Temperature Rating	Traction Rating	Treadwear Rating
13	C B A	C B A AA	280 0 900
All others	C B A	C B A AA	300 0 900

SPECTRA

Size	Temperature Rating	Traction Rating	Treadwear Rating
13	C B A	C B A AA	380 0 900
All others	C B A	C B A AA	400 0 900

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