Tire Speed Rating

Quick facts on tire quickness.

Speed rating is a handy system to indicate the range of speeds your tire is certified to safely handle under specific service conditions. This rating is indicated by a letter, A-Z, tacked onto the end of the tire's service description, as seen here:

205/60R15 91V
205  = Section Width in Millimeters
60  = Aspect Ratio
R  = Radial Construction
15  = Rim Diameter in Inches
91 = Load Index (Service
Description)

V = Speed Symbol

SPEED RATING

Speed Symbol

Speed (km/h)

Speed (mph)
A1 5
3
A2 10 6
A3 15 9
A4 20 12
A5 25 16
A6 30 19
A8 40 25
B 50 31
C 60 37
D 65 40
E 70 43
F 80 50
G 90 56
J 100 62
K 110 68
L 120 75
M 130 81
N 140 87
P 150 94
Q 160 100
R 170 106
S 180 112
T 190 118
U 200 124
H 210 130
V 240 149
W 270 168
Y 300 186

Check out this chart to see the top speeds that correspond with each letter.

When tires have a maximum speed capability above 149 mph (240 km/h), a "ZR" may appear in the service description and if it can handle over 186 mph (300 km/h), it must. Here is an example:

EXAMPLES
Tire Designation

Maximum Speed
P275/40ZR17 93W

270 km/h (168 mph)
P275/40ZR17 93Y

300 km/h (186 mph)

If you want more info on speed ratings and what they mean to you, contact us. We'll catch you up.

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