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) 
A15
A210
A315
A420
A525
A630
A735
A840
B50
C60
D65
E70
F80
G90
J100
K110
L120
M130
N140
P150
Q160
R170
S180
T190
U200
H210
V240
VR/VB>210
W270
ZR/ZB>240
Y300