Alfa Romeo Alfa 147 GTA Owner's Manual page 251

Maximum speed index
Q = up to 160 km/h
R = up to 170 km/h
S = up to 180 km/h
T = up to 190 km/h
U = up to 200 km/h
H = up to 210 km/h
V = up to 240 km/h
W = up to 270 km/h
Y = up to 300 km/h
Maximum speed index
for snow tyres
Q M + S = up to 160 km/h
T M + S = up to 190 km/h
H M + S = up to 210 km/h
250
CORRECT RIM READING
Below are the instructions necessary to
know the meaning of the code stamped on
the rim, as shown in fig. 5.
Example:
7.5 J x 17 H2 ET 43
7.5 = rim width in inches (1)
J
= rim drop centre outline (side pro-
jection where the tyre bead rests
(2)
17 = rim nominal diameter in inches
(corresponds to diameter of the
tyre to be mounted) (3 = Ø)
H2 = "hump" shape and number (relief
on the circumference holding the
Tubeless tyre bead on the rim)
ET 43 = camber angle (distance be-
tween disk/rim line and wheel
rim centre line)
fig. 5
A0M0465m