Mercedes-Benz E-Class Coupe Operator's Manual page 354

All about wheels and tires
352
Tire labeling
Overview
Uniform Tire Quality Grading Standards
:
( page 356)
Y
Department of Transportation, Tire Iden-
;
tification Number (
Maximum load rating (
=
Maximum tire pressures (
?
Manufacturer
A
Tire material (
B
Tire size designation, load-bearing capa-
C
city and speed rating (
Load index (
D
Tire name
E
The markings described above are on the tire
in addition to the tire name (sales designa-
tion) and the manufacturer's name.
i
Tire data is vehicle-specific and may devi-
ate from the data in the example.
Tire size designation, load-bearing
capacity and speed rating
G WARNING
Exceeding the stated tire load-bearing capa-
city and the approved maximum speed could
lead to tire damage or the tire bursting. There
is a risk of accident.
page 355)
Y
page 354)
Y
page 342)
Y
page 355)
Y
page 352)
Y
page 354)
Y
Therefore, only use tire types and sizes
approved for your vehicle model. Observe the
tire load rating and speed rating required for
your vehicle.
Tire width
:
Nominal aspect ratio in %
;
Tire code
=
Rim diameter
?
Load bearing index
A
Speed rating
B
General: depending on the manufacturer's
standards, the size imprinted in the tire wall
may not contain any letters or may contain
one letter that precedes the size description.
If there is no letter preceding the size descrip-
tion (as shown above): these are passenger
vehicle tires according to European manufac-
turing standards.
If "P" precedes the size description: these are
passenger vehicle tires according to U.S.
manufacturing standards.
If "LT" precedes the size description: these
are light truck tires according to U.S. manu-
facturing standards.
If "T" precedes the size description: these are
compact emergency spare wheels at high tire
pressure, to be used only temporarily in an
emergency.
Tire width: tire width : shows the nominal
tire width in millimeters.
Aspect ratio: aspect ratio ; is the size ratio
between the tire height and tire width and is
shown in percent. The aspect ratio is calcu-