Mercedes-Benz 2009 CL-Class Operator's Manual page 444

Operation
Tires and wheels
Uniform Tire Quality Grading Standards
1
( Y page 447)
DOT, Tire Identification Number
2
( Y page 445)
Maximum tire load ( Y page 446)
3
Maximum tire inflation pressure
4
( Y page 446)
Manufacturer
5
Y
Tire ply material ( page 448)
6
Tire size designation, load and speed
7
rating ( Y page 442)
Load identification ( Y page 445)
8
Tire name
9
442
i For illustration purposes only. Actual data
on tires are specific to each vehicle and
may vary from data shown in above
illustration.
For more information, see "Rims and
tires" ( Y page 569).
Tire size designation, load and speed
rating
Tire width
1
Aspect ratio in %
2
Radial tire code
3
Rim diameter
4
Tire load rating
5
Tire speed rating
6
i For illustration purposes only. Actual data
on tires are specific to each vehicle and
may vary from data shown in above
illustration.
General: Depending on the design standards
used, the tire size molded into the sidewall
may have no letter or a letter preceding the
tire size designation.
No letter preceding the size designation (as
illustrated above): Passenger car tire based
on European design standards.
Letter "P" preceding the size designation:
Passenger car tire based on U.S. design
standards.
Letter "LT" preceding the size designation:
Light Truck tire based on U.S. design
standards.
Letter "T" preceding the size designation:
Temporary spare tires which are high
pressure compact spares designed for
temporary emergency use only.
Tire width
Tire width indicates the nominal tire width
1
in millimeters.