The SPEED Rating is “S” from the PLACARD that you read from the previous Post , s it’s not wise to drive these tires over 112 MPH
with continuity…The last digits are “17”. It denotes the Diameter of the
Rim, not the Diameter of the Tire.
Letter
Maximum Rated Speed
L
75 Miles Per Hour
M
81 MPH
N
87 MPH
P
93 MPH
Q
99 MPH
R
106 MPH
S
112 MPH
T
118 MPH
U
124 MPH
H
130 MPH
V
149 MPH
W
168 MPH
Y
186 MPH
Z
Open –ended *
The exact speed rating for a particular Z-rated tire is determined by the tire manufacturer and may vary according to size. For example, not all Brand X Z tires are rated at 170 mph, even though one size may be capable of these speeds.
