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Journalism in the Public Interest

SPARTAN

A/S

Size	Temperature Rating	Traction Rating	Treadwear Rating
All sizes	C B A	C B A AA	400 0 900

AVISTA

Size	Temperature Rating	Traction Rating	Treadwear Rating
P185/60R15/84T	C B A	C B A AA	620 0 900
P205/65R16 94T	C B A	C B A AA	700 0 900
P225/55R17/95T	C B A	C B A AA	620 0 900
P225/60R16 97S	C B A	C B A AA	700 0 900

AVISTA "H"-RATED

Size	Temperature Rating	Traction Rating	Treadwear Rating
All sizes	C B A	C B A AA	560 0 900

AVISTA (S & T)

Size	Temperature Rating	Traction Rating	Treadwear Rating
ALL EXCEPT	C B A	C B A AA	700 0 900

SILVERMARK

Size	Temperature Rating	Traction Rating	Treadwear Rating
All sizes	C B A	C B A AA	620 0 900

SLT

Size	Temperature Rating	Traction Rating	Treadwear Rating
All sizes	C B A	C B A AA	520 0 900

USA 1

Size	Temperature Rating	Traction Rating	Treadwear Rating
13	C B A	C B A AA	440 0 900
All others	C B A	C B A AA	480 0 900

USA CLASSIC

Size	Temperature Rating	Traction Rating	Treadwear Rating
14	C B A	C B A AA	420 0 900
15	C B A	C B A AA	440 0 900

USA PLUS

Size	Temperature Rating	Traction Rating	Treadwear Rating
13	C B A	C B A AA	380 0 900
14	C B A	C B A AA	420 0 900
15	C B A	C B A AA	440 0 900

WEATHERMARK

Size	Temperature Rating	Traction Rating	Treadwear Rating
All sizes	C B A	C B A AA	420 0 900

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