Tread Wear - Mercedes-Benz G-Class Operator's Manual

Uniform Tire Quality Grading Standards
274
Vehicle identification plate
Even if you have calculated the total load care-
fully, 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 (
Gross vehicle weight rating: the gross weight
of the vehicle, all passengers, load and trailer
load/noseweight (if applicable) must not
exceed the gross vehicle weight rating.
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
weight and maximum gross axle weight rating),
have your loaded vehicle (including driver, occu-
pants, load and full trailer load if applicable)
weighed on a suitable vehicle weighbridge.
Trailer load/noseweight
The trailer load/noseweight affects the gross
weight of the vehicle. If a trailer is attached, the
trailer load/noseweight is included in the load
along with occupants and luggage. The trailer
load/noseweight is usually approximately 10 %
of the gross weight of the trailer and its load.
Only use a trailer tow hitch that has been
approved for your vehicle by Mercedes-Benz.
Comply with the manufacturer's operating
instructions for operation, care and mainte-
nance.
Uniform Tire Quality Grading Stand-
ards
Overview of Tire Quality Grading
Standards
page 271).
Y
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.
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
All passenger car tires must conform to the stat-
utory safety requirements in addition to these
grades.
i
cific and may deviate from the values in the
illustration.
Treadwear
The treadwear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified U.S.
government course. For example, a tire graded
150 would wear one and one-half times as well
The actual values for tires are vehicle-spe-