184TECHNICAL SPECIFICATIONS
UNDERSTANDING TYRE
MARKING
The following are the necessary in-
dications to understand the meaning
of the markings on the tyre.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 240 km/hUNDERSTANDING RIM
MARKINGS
The following are the necessary in-
dications to understand the meaning
of the markings on the rim.
Example: 185/65 R 15 88 T
185= Nominal width (S, distance
between sidewalls in mm).
65= Height/width ratio (H/S, as a
percentage).
R= Radial tyre.
15= Rim nominal diameter in inch-
es (Ø).
88= Load rating.
T= Maximum speed rating.Example: 5
1/2J x 15 H2
51/2= rim width in inches (1)
J= rim drop centre outline (side
projection where the tyre
bead rests) (2)
15= rim nominal diameter in inch-
es (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)
fig. 6
F0A0257b
174-211 Doblo GB 16-12-2008 14:26 Pagina 184
