Buying
New
Tires
To
find out what kind and .size of tires you need, look at
the
Tire-Loading Information label.
The tires installed on your vehicle when it was new had
a Tire Performance Criteria Specification
(TPC
Spec)
number on each tire’s sidewall. When you get new tires,
get ones with that same
TPC
Spec number. That way
your vehicle will continue to have tires that are designed
to give proper endurance, handling, speed rating,
traction, ride and other things during normal service
on
your vehicle.
If
your tires have
an
all-season tread
design,
the
TPC
number
will
be
followed
by
an
“MS”
(for mud and snow).
If
you ever replace your tires with those not having
a
TPC Spec number, make sure they are the same size,
load range, speed rating and construction type (bias,
bias-belted or radial)
as
your original tires.
Mixing tires could cause
you
to
lose
control while
driving. If
you
mix tires of different sizes or types
(radial and bias-belted tires), the vehicle
may
not
handle properly, and
you
could have
a
crash.
Using tires of different sizes may also cause
damage
to
your
vehicle. Be sure to
use
the
same
size and type tires on all wheels.
Uniform
Tire
Quality Grading
The following information relates to the system
developed by the United States National Highway
Traffic Safety Administration, which grades tires
by
treadwear, traction and temperature performance.
(This applies only to vehicles sold
in
the United States.)
The grades are molded on the sidewalls
of
most
passenger car tires. The Uniform Tire Quality Grading
system does not apply to deep tread, winter-type snow
tires,
space-saver
or
temporary use spare tires, tires with
nominal
rim
diameters
of
10
to
12
inches
(25
to
30
cm),
or to some limited-production tires.
6-44
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