Speed Index/SI
The table below shows which letter of the Speed Index corresponds to which maximum speed. This way you can easily determine the maximum speed your tyre is allowed to be used at. For Protempo's entire range of tyres, inner tubes and rims, click here.
Speed Index (SI) | Maximum speed (km/h) |
A1 | 5 |
A2 | 10 |
A3 | 15 |
A4 | 20 |
A5 | 25 |
A6 | 30 |
A7 | 35 |
A8 | 40 |
B | 50 |
C | 60 |
D | 65 |
E | 70 |
F | 80 |
G | 90 |
J | 100 |
K | 110 |
L | 120 |
M | 130 |
N | 140 |
P | 150 |
Q | 160 |
R | 170 |
S | 180 |
T | 190 |
U | 200 |
H | 210 |
V | 240 |
VR/VB | >210 |
W | 270 |
ZR/ZB | >240 |
Y | 300 |