Understanding Tyre Markings; Understanding Rim Markings; Maximum Speed Rating - Fiat 600 Owner's Manual

UNDERSTANDING TYRE
MARKINGS
The following are the necessary in-
dications to understand the meaning
of the markings on the tyre.
Example: 165/55 R 13 70 H
165 = Nominal width (S, distance
between side walls in mm).
55 = Height/width ratio (H/S, as a
percentage).
R = Radial tyre.
13 = Rim nominal diameter in
inches (Ø).
70 = Load rating (carrying capacity).
H = Maximum speed rating.

Maximum speed rating

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.
Maximum speed rating
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
fig. 5
UNDERSTANDING RIM
MARKINGS
The following are the necessary in-
dications to understand the meaning
of the markings on the rim.
Example: 5 1/2 B x 13 H2
5 1/2 = rim width in inches (1)
B = rim drop centre outline
(side projection where the
tyre bead rests) (2)
13 = rim nominal diameter in
inches (corresponds to di-
ameter of the tyre to be
mounted) (3 = Ø)
H2 = "hump" shape and number
(relief on the circumfer-
ence holding the tubeless
tyre bead on the rim)
TECHNICAL SPECIFICATIONS
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