Chevrolet 1979 Light Duty Truck Owner's Manual page 95

TIRE LOAD
RANGE
Standard (Metric tires)
Extra (Metric tires)
Ti re load range i s sta mped o n the tire. ( See
i l l ustration o n page
Sustained speeds over 65 mph
where the 10 psi (70 kPa) pressure increase would exceed the wheel
capacity limit.
For special operating conditions, such as carrying slide-in campers,
cold inflation pressures may be increased up to 10 psi (70 kPa) above
those shown in the table. The total increase in cold inflation pressures,
however, must not exceed the wheel capacity limit shown on the Wheel
Code and Limits Chart.
*Passenger-car-type tires have a 15-inch (380 millimetre) or smaller
wheel size and have no "LT" designation molded in the sidewall after
the tire size. Light truck-type tires have "LT" molded in the sidewall
after the tire size and/or are larger than 15 inches (380 mm) in wheel
size.
Passenger-Car-Type Snow Tires:
4.
When using passenger-car-type snow tires, cold inflation pressures
should be increased 4 psi (30 kPa) above the stated cold inflation
pressures on the Certification Label up to the maximum for each load
range stated in the chart above.
(1 20
km/h) are not advised.
CAUTION: Be sure to keep tires properly inflated.
while significantly underinflated will overheat to the point where the tire
may blow out and/or cat c h fire, possibly resulting in damage to the
vehicle and its contents and/or personal injury to its occupants and
persons in the area.
Truck-Type Snow Tires: .
When using truck-type snow tires, cold inflation pressures should be
increased 10 psi (70 kPa) above the advised pressures for the load being
carried. However, do not exceed the wheel capacity limit shown in the
Wheel Code and Limits Chart.
(1 00
km/h) are not advised.
For proper inflation pressures when towing trailers, see Page 1- 19
5.
in this manual.
Always use a tire pressure gage (a pocket-type gage is advised)
6.
when checking inflation pressures. A visual inspection of tires for
inflation pressures is not enough, especially in the case of radial
tires. Underinflated r�ial tires may look simil�r to correctly
inflated radial tires. If the inflation pressure on a tire quite often
is found to be low, have your dealer correct the cause.
8
c
D
5- 1 9
Sustained speeds above 65 mph
MAX IMUM I NFLATION
PRESSURE
32 psi t220 kPa)
36 psi (250 kPa)
40 psi (275 kPa)
240
k Pa
280
k Pa
fo r location on tire sidewa l l . )
(1 00
km/h) are not advised
Sustained speeds above 75 mph
5 - 1 5
( 35
psi )
(41
ps i )
tire that is run
A