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

The greater the combined weight of the occu-
pants, the lower the maximum luggage load.
Step 1
Example 1
Combined max-
1500 lbs
imum weight of
(680 kg)
occupants and
cargo (data
from the Tire
and Loading
Information
placard)
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 occupants
(80 kg)
Step 3
Example 1
Permissible
1500 lbs
load (maxi-
(680 kg) Ò
mum gross
175 lbs
vehicle weight
(80 kg) =
rating from the
1325 lbs
Tire and Load-
(600 kg)
ing Information
placard minus
the gross
weight of all
occupants)
Vehicle identification plate
Even if you have calculated the total cargo care-
fully, you should still make sure that the gross
vehicle weight rating and the gross axle weight
Example 2
rating are not exceeded. Details can be found on
1500 lbs
the vehicle identification plate on the B-pillar on
(680 kg)
the driver's side of the vehicle (
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
one axle (front or rear axle).
To ensure that your vehicle does not exceed the
maximum permissible values (gross vehicle
Example 2
weight and maximum gross axle weight rating),
have your loaded vehicle (including driver, occu-
2
pants and the load) weighed on a suitable vehi-
cle weighbridge.
Occu-
All about wheels and tires
pant 1:
175 lbs
Uniform Tire Quality Grading Stand-
(80 kg)
ards
Occu-
pant 2:
Overview of Tire Quality Grading Stand-
195 lbs
ards
(88 kg)
370 lbs
(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 information
on tire performance data. Tire manufacturers
have to grade tires using three performance fac-
tors: : 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 corre-
sponding quality grading markings on the side-
wall of the tire.
All about wheels and tires
267
page 265).
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