Chevrolet LIGHT DUTY TRUCK (SERIES 10-35) Service Manual page 345

3E-8 WHEELS A N D TIRES
WHEEL USAGE AND TIRE LOAD LIM ITS AT VARIOUS IN FLATIO N PRESSURES*
Wheel Code
Regular
R ally/Sp o k e
CB CD. BX
CB
CD. BX
CB CD. BX
CB CD, BX
CB CD. BX
CD. BX
XW
XW CD. BX
NOTE: The load at maximum inflation pressure stamped on the tire sidewall of passenger tires will differ from the load shown in this table. This is in accordance
with Tire and Rim Association standards requiring a reduced loading factor of approximately 91% for passenger type tires used on trucks and multipurpose
passenger vehicles.
Wheel Code
Regular Rally
ZM
-
* Wheel load limits are shown on the next page. Vehicle loading must be limited such that neither the
wheel or tire load limits are exceeded.
3. Double inflate. Inflate to operating pressure, deflate
completely and reinflate to operating pressure. This allows
tube, flap and tire to fit together properly.
4. Check bead seating. Visually check slot and side ring
gap (on two piece rim) to make sure bead is seated. The
flange and one of the three lower sidewall rim line rings
while the tire is laying flat (measurements should be taken
each 90° around the circumference of the rim flange). If
spacing is uneven around bead from side to side, repeat Step
1 through 3, and recheck.
B. Tubeless Tires.
1. Only use rims approved for radial tire usage by rim
manufacturer. Thoroughly clean rim, removing all rust and
other foreign material.
2. Thoroughly lubricate tire beads and rim bead seats
with an approved rubber lubricant.
CAUTION: Do not use silicone base
lubricants - this could cause the tire to slip
on the wheel.
3. Inflation. Inflate tire to operating pressure. Due to
the construction of radial truck tires, particularly in the
lower sidewall and bead area, it may be difficult to get the
LIG H T T R U C K S ER V IC E M ANUAL
P A S S E N G E R TY P E T IR E S FOR LIG H T T R U C K S USED IN H IG H W A Y S E R V IC E
Tire Load
Size Range
FR78-15 B
G78-15 D
G R 78-1 5 B
H78-1 5 B
B
H R 78-1 5
J78 -15 B
B
JR78-1 5
TRUCK RADIAL TIRES USED AS SINGLES
Tire Load Ply
Size Range Rating
8.75R-16.5 D
8
Fig. 3 E -9 -T ire /W h e e l Load and Infla tion Pressure 6 of 7
Tire Load Limits at Various Inflation P re ssu re s (PSI)
24 26 30
28
1163 1218 1272
1318
1254 1309
1363 1418
1254 1309 1363
1418
1372 1436 1500 1554
1372 1436 1500 1554
1500
1436 1563 1627
1436 1500 1563 1627
Tire Load Limits at Various Inflation Pressures (PSI)
35
40 45
1570
1720 1850
tire to take air. An inflation aid may be necessary to help
seat the bead of tubeless radial tires. Two types of inflation
aids are commercially available, (
compressed air to seat beads, and (
between the tirebead and rim bead seat allowing the bead
to move out and seat. Lubrication is mandatory with both
items.
4. Check bead seating. This check is made by
measuring the space between the rim flange and one of the
three lower sidewall rim line rings while the tire is laying
flat (measurements should be taken each 90° around the
circumference of the rim flange. If spacing is uneven around
the bead from side to side, repeat Steps 1 through 3, and
recheck.
It's important that this procedure be followed to insure
proper bead seating in order to prevent bead deformation.
Radial tires, as well as the bias tires, must
NOTICE:
be mounted and inflated in accordance with safety
precautions noted in R M A Radial and Bias Truck Tire
Service Manuals.
32 34 36 38
1360
1470
1470
1527 1572 1618
1605
1605
1690
1690
50 55 60
2110
1990 2240
) metal rings which use
1
2 ) rubber rings which seal
40
1663
65
2350