Uniform Tire Quality Grading Standards - Mercedes-Benz CLS Operator's Manual

All about wheels and tires
340
Step 3
Exampl
e 1
Permiss
1500 lbs
ible
(680 kg)
load
Ò750 lbs
(maxim
(340 kg)
um
=
gross
750 lbs
vehicle
(340 kg)
weight
rating
from
the Tire
and
Loading
Informa
tion
placard
minus
the
gross
weight
of all
occupa
nts)
Vehicle identification plate
Even if you have calculated the total load
carefully, you should still make sure that the
gross vehicle weight rating and the gross axle
weight rating are not exceeded. Details can
be found on the vehicle identification plate on
the B-pillar on the driver's side of the vehicle
( Y page 337).
Permissible gross vehicle weight: the
gross weight of the vehicle, all passengers,
load and trailer load/noseweight (if
applicable) must not exceed the permissible
gross vehicle weight.
Gross axle weight rating: the maximum
permissible weight that can be carried by one
axle (front or rear axle).
Exampl Exampl
e 2 e 3
1500 lbs 1500 lbs
(680 kg) (680 kg)
Ò540 lbs Ò150 lbs
(245 kg) (68 kg) =
= 1350 lbs
960 lbs (612 kg)
(435 kg)
To ensure that your vehicle does not exceed
the maximum permissible values (gross
vehicle weight and maximum gross axle
weight rating), have your loaded vehicle
(including driver, occupants, cargo, and full
trailer load if applicable) weighed on a
suitable vehicle weighbridge.
All about wheels and tires
Uniform Tire Quality Grading
Standards
Overview of Tire Quality Grading
Standards
Uniform Tire Quality Grading Standards are
U.S. government specifications. Their
purpose is to provide drivers with uniform
reliable information on tire performance data.
Tire manufacturers have to grade tires using
three performance factors: : tread wear
grade, ; traction grade and = temperature
grade. These regulations do not apply to
Canada. Nevertheless, all tires sold in North
America are provided with the corresponding
quality grading markings on the sidewall of
the tire.
Where applicable, the tire grading
information can be found on the tire sidewall
between the tread shoulder and maximum
tire width.
Example:
Treadwear grade: 200
R
Traction grade: AA
R
Temperature grade: A
R