Kia EV9 2023 Owner's Manual page 624

Maintenance
5. Maximum permissible inflation pressure
This number is the greatest amount of air pressure that should be put in the tire. Do not
exceed the maximum permissible inflation pressure. Refer to "Vehicle certification label/
tire specification and pressure label" on page 10-8.
6. Maximum load rating
This number indicates the maximum load in kilograms and pounds that can be carried by
the tire. When replacing the tires on the vehicle, always use a tire that has the same load
rating as the factory installed tire.
7. Uniform tire quality grading
Quality grades can be found where applicable on the tire sidewall between tread shoulder
and maximum section width.
For example:
TREADWEAR 200
TRACTION AA
TEMPERATURE A
WARNING
僅 The traction grade assigned to this tire is based on straight ahead braking traction tests,
and does not include acceleration, cornering, hydroplaning, or peak traction characteris-
tics.
僅 The temperature grade for this tire is established for a tire that is properly inflated and
not overloaded. Excessive speed, under inflation, or excessive loading, either separately
or in combination, can cause heat build-up in tire and sudden tire failure. This can cause
loss of vehicle control and serious injury or death.
Tread wear
The tread wear 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-a-half times (1½) as well on the government course
as a tire graded 100.
The relative performance of tires depends upon the actual conditions of their use, how-
ever, and may depart significantly from the norm due to variations in driving habits, ser-
vice practices and differences in road characteristics and climate.
The tires available as standard or optional equipment on your vehicle may vary with
respect to grade.
Traction - AA, A, B & C
The traction grades, from highest to lowest, are AA, A, B and C. Those grades represent
the tire's ability to stop on wet pavement as measured under controlled conditions on
specified government test surfaces of asphalt and concrete. A tire marked C may have
poor traction performance.
Temperature -A, B & C
The temperature grades are A (the highest), B, and C, representing the tire's resistance to
the generation of heat and its ability to dissipate heat when tested under controlled condi-
tions on a specified indoor laboratory test wheel.
9 26
Replacing components