All About Wheels And Tires - Mercedes-Benz SLC 300 2019 Operator's Manual

Step 2
Example 1
Number of peo-
1
ple in the vehi-
cle (driver and
occupants)
Weight of the
Occu-
occupants
pant 1:
175 lbs
(80 kg)
Gross weight
175 lbs
of all occu-
(80 kg)
pants
Step 3
Example 1
Permissible
1500 lbs
load (maxi-
(680 kg) Ò
mum gross
175 lbs
vehicle weight
(80 kg) =
rating from
1325 lbs
the Tire and
(600 kg)
Loading Infor-
mation plac-
ard minus the
gross weight
of all occu-
pants)
Vehicle identification plate
Even if you have calculated the total cargo
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
( page 279).
Y
Permissible gross vehicle weight: the gross
weight of the vehicle, all passengers and the
load must not exceed the permissible gross
vehicle weight.
Gross Axle Weight Rating (GAWR): the maxi-
mum permissible weight that can be carried by
Example 2
one axle (front or rear axle).
To ensure that your vehicle does not exceed
2
the maximum permissible values (gross vehi-
cle weight and maximum gross axle weight rat-
ing), have your loaded vehicle (including driver,
occupants and the load) weighed on a suitable
Occu- vehicle weighbridge.
pant 1:
175 lbs
(80 kg)

All about wheels and tires

Occu-
pant 2: Uniform Tire Quality Grading Stand-
195 lbs
ards
(88 kg)
Overview of Tire Quality Grading
370 lbs
Standards
(168 kg)
Example 2
1500 lbs
(680 kg) Ò
370 lbs
(168 kg) =
1130 lbs
(512 kg)
Uniform Tire Quality Grading Standards are
U.S. government specifications. Their purpose
is to provide drivers with uniform reliable infor-
mation on tire performance data. Tire manu-
facturers have to grade tires using three per-
formance 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.
Quality grades can be found, where applicable,
on the tire sidewall between tread shoulder
and maximum section width.
Example:
Treadwear grade: 200
R
Traction grade: AA
R
Temperature grade: A
R
All passenger car tires must conform to the
statutory safety requirements in addition to
these grades.
All about wheels and tires
281
Z