FORD 2015 Mustang - Manual (Page 248)

G. H: Indicates the tire's speed
rating. The speed rating denotes
the speed at which a tire is
designed to be driven for extended
periods of time under a standard
condition of load and inflation
pressure. The tires on your vehicle
may operate at different
conditions for load and inflation
pressure. These speed ratings may
need to be adjusted for the
difference in conditions. The
ratings range from 81 mph (130
km/h) to 186 mph (299 km/h).
These ratings are listed in the
following chart.
Note: You may not find this
information on all tires because it
is not required by federal law.
Speed rating - mph
(km/h)
Letter
rating
81 (130) M
87 (140) N
99 (159) Q
106 (171) R
112 (180) S
118 (190) T
124 (200) U
130 (210) H
149 (240) V
Speed rating - mph
(km/h)
Letter
rating
168 (270) W
186 (299) Y
Note: For tires with a maximum
speed capability over 149 mph
(240 km/h), tire manufacturers
sometimes use the letters ZR. For
those with a maximum speed
capability over 186 mph (299
km/h), tire manufacturers always
use the letters ZR.
H. U.S. DOT Tire Identification
Number (TIN): This begins with
the letters DOT and indicates that
the tire meets all federal
standards. The next two numbers
or letters are the plant code
designating where it was
manufactured, the next two are
the tire size code and the last four
numbers represent the week and
year the tire was built. For
example, the numbers 317 mean
the 31st week of 1997. After 2000
the numbers go to four digits. For
example, 2501 means the 25th
week of 2001. The numbers in
between are identification codes
used for traceability. This
information is used to contact
customers if a tire defect requires
a recall.
I. M+S or M/S: Mud and Snow, or
AT: All Terrain, or
AS: All Season.
245
Mustang (), enUSA, First Printing
Wheels and Tires