GRECH MOTORS
43
J.
Tire Ply Composition and Material Used:
Indicates the number of plies or the number of layers
of rubber-coated fabric in the tire tread and sidewall.
Tire manufacturers also must indicate the ply
materials in the tire and the sidewall, which include
steel, nylon, polyester, and others.
K.
Maximum Load:
Indicates the maximum load in
kilograms and pounds that can be carried by the tire.
(affixed to either the door hinge pillar, door-latch post,
or the door edge that meets the door-latch post, next
to the driver’s seating position), or Tire Label located
on the B-pillar or the edge of the driver’s door.
L.
Treadwear, Traction and Temperature
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 1½ 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.
M.
Maximum Inflation Pressure:
Indicates the
tire manufacturers’ maximum permissible pressure
or the pressure at which the maximum load can be
carried by the tire. This pressure is normally higher
than the vehicle 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’s seating position), or Tire Label located on
Wheels and Tires
