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7
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Maintenance Tyres and wheels
3. Checking tyre life (TIN : Tyre
Identification Number)
Any tyres that are over 6 years old,
based on the manufacturing date,
(including the spare tyre) should be
replaced by new ones. You can find
the manufacturing date on the tyre
sidewall (possibly on the inside of
the wheel), displaying the DOT Code.
The DOT Code is a series of numbers
on a tyre consisting of numbers and
English letters. The manufacturing
date is designated by the last four
digits (characters) of the DOT code.
DOT : 9999 9999 OOOO
The front part of the DOT means a
plant code number, tyre size and
tread pattern and the last four
numbers indicate week and year
manufactured.
For example: DOT XXXX XXXX 1621
represents that the tyre was pro
-
duced in the 16th week of 2021.
Tyre age
Tyres degrade over time, even when
they are not being used.
3egardless of the remaining tread,
we recommend that tyres be
replaced after approximately six (6)
years of normal service. Heat
caused by hot climates or frequent
high loading conditions can acceler
-
ate the aging process. Failure to fol
-
low this warning can result in
sudden tyre failure, which could lead
to a loss of control and an accident
involving serious injury or death.
4. Tyre ply composition and mate
-
rial
The number of layers or plies of
rubber-coated fabric in the tyre.
Tyre manufacturers also must indi
-
cate the materials in the tyre, which
include steel, nylon, polyester, and
others. The letter "3" means radial
ply construction; the letter "D"
means diagonal or bias ply con
-
struction; and the letter "B" means
belted-bias ply construction.
5. Maximum permissible inflation
pressure
This number is the greatest amount
of air pressure that should be put in
the tyre. Do not exceed the maxi
-
mum permissible inflation pressure.
3efer to the Tyre and Loading Infor
-
mation label for recommended
inflation pressure.
6. Maximum load rating
This number indicates the maximum
load in kilograms and pounds that
Y 300 km/h (186 mph)
Speed Rating
SZmbol
.aximum Speed
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