Mercedes-Benz SL 550 BlueEFFICIENCY, Operator'S Manual

Page: 546 / 572

The speed rating of tires mounted at the
factory may be higher than the maximum
speed that the electronic speed limiter
permits.
Make sure that your tires have the required
speed rating, e.g. when buying new tires. The
required speed rating for your vehicle can be
found in the "tires" section (
Y
page 552).
Further information about reading tire data
can be obtained from any qualified specialist
workshop.
Load index
In addition to the load bearing index, load
rating
:
may be imprinted after the letters
that identify speed rating on the sidewall of
the tire (
Y
page 541).
R
If no specification is given: no text (as in the
example above), represents a standard
load (SL) tire
R
XL or Extra Load: represents a reinforced
tire
R
Light Load: represents a light load tire
R
C, D, E: represents a load range that
depends on the maximum load that the tire
can carry at a certain pressure
i Tire data is vehicle-specific and may
deviate from the data in the example.
Maximum load rating
Maximum load rating
:
is the maximum
permissible weight for which the tire is
approved.
Do not overload the tires by exceeding the
specified load limit. The maximum
permissible load can be found on the
vehicle's Tire and Loading Information
placard on the B-pillar on the driver's side
(
Y
page 537).
i The actual values for tires are vehicle-
specific and may deviate from the values in
the illustration.
DOT, Tire Identification Number (TIN)
U.S. tire regulations prescribe that every tire
manufacturer or retreader must imprint a TIN
in or on the sidewall of every tire produced.
The TIN is a unique identification number. The
TIN makes it easier for tire manufacturers or
retreaders to notify customers of recalls or
other safety-related matters. It makes it
544
All about wheels and tires
Wheels and tires