When It Is Time For New Tires; Buying New Tires - Cadillac 2004 CTS Owner's Manual

When It Is Time for New Tires

You need a new tire if any of the following statements
are true:
•
You can see the indicators at three or more places
around the tire.
•
You can see cord or fabric showing through the
tire's rubber.
•
The tread or sidewall is cracked, cut or snagged
deep enough to show cord or fabric.
•
The tire has a bump, bulge or split.
•
The tire has a puncture, cut or other damage that
can't be repaired well because of the size or
location of the damage.
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One way to tell when it's
time for new tires is to
check the treadwear
indicators, which will
appear when your tires
have only 1/16 inch
(1.6 mm) or less of tread
remaining.

Buying New Tires

To find out what kind and size of tires your vehicle
needs, look at the tire and loading information label.
For more information about this label and its location on
your vehicle, see Loading Your Vehicle on page 4-33 .
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,
load range, 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.