manufacturers also must
indicate the ply materials
in the tire and the
sidewall, which include
steel, nylon, polyester,
and others.
Maximum Load:
Indicates the maximum
load in kilograms and
pounds that can be
carried by the tire. Refer to
the Safety Compliance
K
Certification Label
(affixed to either the door
hinge pillar, door-latch
post, or the door edge
that meets the door-latch
post, next to the driver
seating position), for the
correct tire pressure for
your vehicle.
Treadwear, Traction
and Temperature
Grades:Treadwear
The
treadwear grade is a
comparative rating based
on the wear rate of the tire
L
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.
Traction:
The traction grades, from
highest to lowest are AA,
A, B, and C. The 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:
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 conditions on
a specified indoor
laboratory test wheel.
Maximum Inflation
Pressure:
Indicates the
tire manufacturer's
maximum permissible
pressure or the pressure
at which the maximum
M
load can be carried by the
tire. This pressure is
normally higher than the
manufacturer's
recommended cold
inflation pressure, which
can be found on the
Safety Compliance
Certification Label
(affixed to either the door
hinge pillar, door-latch
post, or the door edge
that meets the door-latch
post, next to the driver
seating position), or Tire
Label which is located on
the B-Pillar or the edge of
247
Transit (TTH) Canada/United States of America, enUSA, First Printing
Wheels and Tires