Operation
Tires and wheels
General:
Tire width
Rim diameter
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.
The tire width 1 (୴ page 295) indicates
the nominal tire width in mm.
The rim diameter 4 (୴ page 295) is the
diameter of the bead seat, not the
diameter of the rim edge. Rim diameter is
indicated in inches (in).
Aspect ratio
No letter preceding the size designation
(as illustrated above): Passenger car tire
based on European design standards.
The aspect ratio 2 (୴ page 295) is the
dimensional relationship between tire
section height and section width and is
expressed in percentage. The aspect ratio
is arrived at by dividing section height by
section width.
Tire load rating
The tire load rating 5 (୴ page 295) is a
numerical code associated with the
maximum load a tire can support.
Letter “P” preceding the size designation:
Passenger car tire based on U.S. design
standards.
For example, a load rating of 91 corre-
sponds to a maximum load of 1356 lbs
Letter “LT” preceding the size designation:
Light Truck tire based on U.S. design
standards.
Tire code
(615
kg) the tire is designed to support.
The tire code 3 (୴ page 295) indicates
the tire construction type. The “R” stands
for radial tire type. Letter “D” means diag-
onal or bias ply construction; letter “B”
means belted-bias ply construction.
See also “Maximum tire load”
(୴ page 301) where the maximum load as-
sociated with the load index is indicated in
kilograms and lbs.
Letter “T” preceding the size designation:
Temporary spare tires which are high
pressure compact spares designed for
temporary emergency use only.
At the tire manufacturer’s option, any tire
with a speed capability above 149 mph
(240
km/h) can include a “ZR” in the size
designation (for example: 245/40 ZR 18).
For additional information, see “Tire speed
rating” (୴ page 297).
296
| Categories | Mercedes-Benz C-Class Manuals, Mercedes-Benz Manuals |
|---|---|
| Tags | Mercedes-Benz C-Class, Mercedes-Benz C230, Mercedes-Benz C280, Mercedes-Benz C350, Mercedes-Benz W204 |
| Model Year | 2007 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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