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Wheels and tyres
Tyre code
Fig. 253 Universal code on tyres
Radial
Rim di
amet
er c
ode
Load index & speed rating
DOT tyre identification number
Severe snow conditions
Tyre ply composition and materials used
Max. load rating
Treadwear, traction and temperature
grades
Max. permissible inflation pressure
Passenger car tyre
Nominal width of tyre in millimetres
1
2
3
4
5
6
7
8
9
10
11
Ratio of height to width (aspect ratio)
Tyre code (example): Meaning
Make, logotype Manufacturer
Product name Name of tyre assigned by manufac-
turer.
P215 /
55 R 16
Size:
P Passenger vehicle code.
215
Nominal width between
walls, in mm.
55 Height/width ratio in %
R
Tyre type (R indicates "ra-
dial").
16 Rim diameter in inches
91 V Load index ››› page 292 and speed
rating ››› page 292.
XL Reinforced tyres (“Reinforced”).
M+S or M/S Winter tyres (mud and snow tyres)
››› page 292.
SSR or DSST,
Eufonia, RFT,
ROF, RSC, ZP,
Conti-Seal
Specific manufacturer codes for run-
flat tyres.
RADIAL
TUBELESS
Radial tyre without inner tube.
12
Tyre code (example): Meaning
E4 ... E-mark certifying tyre complies with
international legislation followed by
a number denoting the country
granting the authorisation. The au-
thorisation number ( several digits)
is shown below.
DOT BT RA TY5
1709
Tyre identification number (TIN
a)
,
may be only on interior wall of wheel)
and date of manufacture:
DOT The tyre complies with the
legal requirements of the
US Department of Trans-
port, responsible for tyre
safety regulations.
BT Place of manufacture
code.
RA Information about manu-
facturer and tyre size.
TY5 Manufacturer's tyre speci-
fications.
1709 Date of manufacture:
Week 17 of 2009.
TWI This identifies the position of the
Tread Wear Indicator ››› page 289.
MAX LOAD
615 KG
(1356 LBS)
US load rating, indicating maximum
permitted load per tyre.
MAX INFLATION
350 KPA
(51 PSI)
US limit, indicating maximum permit-
ted tyre pressure.
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