Dodge 2013 Challenger - Manual (Page 504)

Ⅵ DEPARTMENT OF TRANSPORTATION UNIFORM
TIRE QUALITY GRADES . . . . . . . . . . . . . . . . .509
▫ Treadwear. . . . . . . . . . . . . . . . . . . . . . . . . . .510
▫ Traction Grades . . . . . . . . . . . . . . . . . . . . . . .510
▫ Temperature Grades. . . . . . . . . . . . . . . . . . . .511
502 IF YOU NEED CONSUMER ASSISTANCE