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Discussion Starter · #1 ·
I thought someone was looking for this as well :

speed rating:
The maximum driving speed for which a tire is designed, indicated by a letter in the tire designation on the sidewall. The speed rating evolved gradually and is thus not directly proportional to the alphabetical order.

P = up to 150 kph (95 mph)
Q = up to 160 kph (100 mph)
R = up to 170 kph (105 mph)
S = up to 180 kph (113 mph)
T = up to 190 kph (118 mph)
U = up to 200 kph (125 mph)
H = up to 210 kph (130 mph) also called "high speed" thus the "H"
V = over 210 kph (over 130 mph) also called "very high speed" thus the "V"
 

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you forgot two

W = up to 270 kph (168 mph) ... also known as Woah, I'm going fast
Y = up to 300 kph (186 mph) ... also know as Yeah, I'm gonna die

:laughing :laughing
 
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