Treadwear; Tire Rotation; Department Of Transportation Uniform Tire Quality Grades - Alfa Romeo STELVIO 2018 Owner's Manual

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Tire rotation contributes to the
preservation of the grip and traction
performance on wet, muddy or snowy
roads, guaranteeing optimal driveability
of the vehicle.
In the case of irregular wear of the tires
identify the cause and correct it as soon
as possible, by contacting an authorized
dealer.
The rotational direction of the tire must
be taken into consideration when
rotating the tires. The recommended
rotation pattern for directional tires is
shown below.

Tire Rotation

244
It is recommended to avoid situations
with a large difference in wear between
the front and rear tires and to strictly use
winter tires of the sizes given on the tire
placard.
The AWD system and the original tires
are developed together to ensure the
vehicle's best performance. When
changing the tires, it is recommended to
us the same "AR" marked tires, to
maintain the same level of performance
and component life.
09066V0002EM
DEPARTMENT OF
TRANSPORTATION UNIFORM
TIRE QUALITY GRADES
The following tire grading categories
were established by the National
Highway Traffic Safety
Administration. The specific grade
rating assigned by the tire's
manufacturer in each category is
shown on the sidewall of the tires on
your vehicle.
All passenger vehicle tires must
conform to Federal safety
requirements in addition to these
grades.

Treadwear

The Treadwear grade is a
comparative rating, based on the
wear rate of the tire when tested
under controlled conditions on a
specified government test course.
For example, a tire graded 150 would
wear one and one-half times as well
on the government course as a tire
graded 100. The relative
performance of tires depends upon
the actual conditions of their use,
however, and may depart
significantly from the norm due to

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