What are the different speed ratings for a tyre?

Below is a table showing the speed rating and the MPH & KMPH for that speed rating.

SPEED RATING

MPH

KMPH

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