Tyre Speed Ratings


You will find your speed rating on the side of your tyre at the end of a series of numbers - as shown above W is the speed symbol. For MOT requirements in this country, it is not necessary to fit a tyre with a speed rating to match the original vehicle fitment or the maximum speed of the vehicle. Tyres must be suitable for the purpose for which the vehicle will be used.

Insurance companies might say that a vehicle should be fitted with the tyres having the speed rating recommended by the car manufacturer: but even if you fit Z-rated tyres for speeds over 150 mph they will not insure you if you drive in excess of 70 mph in this country!

The vehicle manufacturer has to recommend a tyre with a rating to match the maximum speed of the car because when it leaves the factory he does not know exactly where the car is going or for what purpose it might be used. You might want to use the car in a country where higher speed limits apply than the UK or take it to a race track at the weekend.

The tyre speed rating (i.e. S) is the maximum speed for which the tyre is rated. For example, the S rating identifies speeds up to 112 mph table below shows rating categories.

 
Speed symbol
Mph
Kph
N
87
140
P
93
150
Q
99
160
R
106
170
S
112
180
T
118
190
U
124
200
H
130
210
V
149
240
Z
150+
240+
W
168
270
Y
186
300