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Tire labeling (example)
E4 ...
DOT BT RA TY5 1709
TWI
Made in Germany
MAX LOAD 615 KG (1356 LBS)
MAX INFLATION 350 KPA
(51 PSI)
ROTATION
SIDEWALL 1 PLY RAYON
TREAD 4 PLIES
1 RAYON + 2 STEEL +
1 NYLON
Consumer information regarding comparison to specified base tires (standardized test
procedure) ⇒ p age 327:
TREADWEAR 220
TRACTION A
TEMPERATURE A
Additional numbers found on the tire could either be tire manufacturer internal labels or
country-specific labels (such as for Brazil and China).
Unidirectional tires
Unidirectional tires are designed to rotate only in one direction. Unidirectional tires have arrows on the
sidewalls that show the direction of rotation. Make sure you mount the tire so that it rotates in the
proper direction. The tire's performance with regard to hydroplaning, traction, noise, and wear is worse
if it is not mounted in the proper direction of rotation.
If you have to mount a tire opposite to its proper direction of rotation, you must drive more carefully,
since the tire is no longer being used as designed. This is particularly important on wet roads. You
must replace or remount the tire as soon as possible in order to restore the correct direction of
rotation.
6
TIN represents the serial number of the tire.
Meaning
Labeling according to international regulations (E) including
number of the approving country. The multi-digit approval number
is listed next.
6
Tire identification number (TIN)
manufacturing date is only on one side of the tire:
The tire complies with the requirements of the United
DOT
States Department of Transportation, responsible for
issuing safety standards.
BT
Identification letter of the manufacturing site.
RA
Manufacturer information regarding tire dimensions.
TY5
Tire characteristics provided by the manufacturer.
1709
Manufacturing date: 17th week in 2009.
Marks the position of the treadwear indicator
Country of manufacture.
United States maximum load rating per wheel.
United States maximum permissible inflation pressure.
Rotation direction (unidirectional tires)
Tire ply composition and materials used:
1 layer of rayon.
Tire tread composition and materials used:
In this example there are 4 layers under the tread: 1 layer of
rayon, 2 layers of steel belt and 1 layer of nylon.
Relative service life expectancy of the tire referenced to a U.S.-
specific standard test.
Traction rating under wet conditions (AA, A, B or C).
Temperature stability of the tire at increased test bench speeds
(A, B or C).
– In some cases the
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