→ Fig. 1 Tyre lettering
(example)
Meaning
Individual tyre designation of the manufacturer.
1
Product name
The tyre complies with the legal requirements of the USA
Department of Transportation, responsible for tyre safety
standards.
2
DOT
Tyre
identification
number (
3
JHCO CHWS 2213
Identifier of producing plant and
JHCO CHWS
specifications of the tyre manufacturer on
size and characteristics.
2213
Date of manufacture: 22nd week in 2013.
Information for the end user concerning comparative values for specified basic tyres
(standardised test procedure) (→ Customer information, Description):
Relative life expectancy for the tyre, with reference to a US-
specific standard test. Tyres with the specification 280 wear
at a rate of 2.8 times more slowly than standard tyres that
4
5
6
TREADWEAR 280
have a treadwear value of 100. The performance of tyres is
determined by how they are used and can significantly
deviate from standard values due to driving style,
maintenance, road surface and climatic conditions.
Wet braking performance of the tyre (AA, A, B or C). The wet
braking performance is tested under controlled conditions on
certified test tracks. Tyres marked C have a low traction
performance. The traction value assigned to the tyres is based
on linear traction tests and does not include acceleration and
lateral stability or aquaplaning and traction under maximum
load.
TRACTION AA
Temperature stability of the tyre at high speeds on a test bed
(A, B or C). A and B tyres exceed legal requirements. The
temperature evaluation is based on tyres with correct
pressure and does not allow for excess pressure. Excessive
speed, incorrect pressure or excess pressure can cause heat
build-up or tyre damage. This applies to one or a combination
of these factors.
TEMPERATURE A
Load index → Tyre load and speed index → Speed index .
7
8
88 H
Rotation and
arrow
Denotes direction of rotation → Tyres with directional tread
pattern .
OR: Outside
Denotes outside of tyres → Asymmetrical tyres .
US limitation for the maximum air pressure.
MAX INFLATION
350 KPA
9
(51 psi/3.51 bar)
Denotes winter tyres (mud and snow tyres) (→ Winter tyres,
Limits/System limits). Studded snow tyres are labelled with
an E after the S.
10
11
M+S or M/S or
TWI
Indicates the position of the tread wear indicator (→ Tread
depth and tread wear indicators, Introduction/General
information).
English 