Tire Replacement - Chevrolet 1979 Light Duty Truck Owner's Manual

and construction type (bias, bias-belted, or radial) as your other tires.
Snow tires should be inflated above the advised cold inflation pressures
for the load being carried (see "Inflation Pressure" in this section for
specific instructions).
Vehicle speed should be limited to
with passenger-car-type snow tires or
type snow tires.
Tire Chains or Similar Traction Devices
To prevent chain damage to your vehicle:
•
Install the chains as tightly as possible, then tighten again after
driving 1/4 to 1/2 mile
•
Do not exceed
speed limit if lower.
•
Drive in a restrained manner avoiding large bumps, potholes,
severe turns and other maneuvers which could cause the tires to
bounce up and down.
•
Follow the chain manufacturer's instructions.

Tire Replacement

CAUTION: Do not mix different construction types of tires on your
vehicle (such as radial, bias, and bias·belted tires) except in
emergencies, because vehicle handling could be affected and may
result in loss of control.
Some truck-type tires and most passenger-car-type radial tires have a
TPC Spec. No. (Tire Performance Criteria Specification Number)
molded into the tire sidewall near the tire size marking. This shows
that the tire meets rigid size and performance standards which were
developed for your vehicle. The TPC Spec. No. assures a proper
combination of endurance, load capacity, handling, and traction on
wet, dry and snow covered surfaces. When you replace your tires with
tires having the same TPC Spec. No., your new tires will be compatible
with your vehicle. When replacing tires with those not having a TPC
Spec. No. 3, you should use the same size, load range, and construction
type (bias, bias-belted, or radial) as the original tires on your vehicle
(see the Certification Label). Use of any other size or type tire may
affect load carrying capacity, ride, handling, speedometer/odometer
calibration, vehicle ground clearance, and tire clearance to the body
and chassis. If replacing only a single tire, it should be paired on the
same axle with the least worn tire of the others.
You should replace your tires when---
l .
Your tires are worn to a point where 2/32 inch ( 1 .6 millimetres)
or less tread remains, or the cord or fabric is exposed. To help
you detect this, your tires have built-in tread wear indicators that
appear between the tread grooves when the tread depth is 2/32
(1.6
inch mm) or less. When the indicators appear in two or more
adjacent grooves at three spots around the tire, the tire should be
replaced.
75
(0.4
to
45 (70
mph km/h), or the chain manufacturer's
5- 1 8
mph (120 km/h) when equipped
65 mph ( 100 km/h) with truck
0.8
kilometre).