When It's Time For New Tires; Buying New Tires; Uniform Tire Quality Grading - Chevrolet 1994 Corvette Owner's Manual

I
When It's Time for New Tires
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 2/32 inch (1.6 mm) or less of tread
remaining.
You need a new tire if
0
You can see the indicators at three or
You can see cord or fabric showing
0
The tread or sidewall is cracked, cut
more places around the tire.
through the tire's rubber.
or snagged deep enough to show cord
or fabric.
0
The tire has a bump, bulge or split.
0
The tire has a puncture, cut, or other
damage that can't be repaired well
because of the size or location of the
damage.
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, yobr 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 a "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.
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.)
Treadwear
The treadwear grade is a comparative
rating based on the wear rate of the tire
when tested under controlled conditions
2 0 7 .
. .