: Tire Speed Ratings



Submariner409
03-05-10, 01:29 PM
Here's the list of tire speed ratings:

You will see a character in the tire size, as in : 235/55/VR17 (this is the older P-metric sizing)

or after the tire size (in a separate molded section of the sidewall) as in: 235/55/17
(99V)

L = 75 mph
M = 81
N = 87
P = 93
Q = 99
R = 106
S = 112
T = 118
U = 124
H = 130
V = 149
W = 168
Y = 186
Z = "in excess of 149 mph" and here's the key:
205/45/ZR17 (xxW) = 168 mph
285/35/ZR19 (xxY) = 186 mph
where (xx ) is two digits.