Mazda 3 Sport 2017 Manual page 561

Customer Information and Reporting Safety Defects
Tire Information (U.S.A.)
T
Indicates a tire that may be installed on cars, SUVs, minivans and light trucks as designated
by the Tire and Rim Association (T&RA).
115
"115" is the nominal width of the tire in millimeters. This three-digit number gives the width
in millimeters of the tire from sidewall edge to sidewall edge. In general, the larger the
number, the wider the tire.
70
"70" is the aspect ratio. This two-digit number indicates the tire's ratio of height to width.
D
"D" is the tire construction symbol. D indicates "diagonal ply construction".
16
"16" is the wheel rim diameter in inches.
90
"90" is the Load Index. This two-or three-digit number indicates how much weight each tire
can support.
M
"M" is the speed rating. The speed rating denotes the maximum speed for which the use of
the tire is rated.
Letter Rating Speed Rating
M 81 mph
8–29