MOTOR TRUCK SERVICE MANUAL
WHEELS, RIMS, TIRES
LOAD AND INFLATION CHART
WIDE BASE TIRES FOR TRUCKS, BUSSES, TRAILERS AND
MULTIPURPOSE PASSENGER VEHICLES USED IN HIGHWAY SERVICE
(Bias and Radial Ply Tubeless)
NOTE: For sustained high speed driving over 60 mph, cold inflation pressures must be increased 10 psi above those
specified by the table for the load being carried (but not to exceed 100 psi). Where the 10 psi pressure
adjustment for sustained high speed is limited by the maximum of 100 psi, speed must be limited to 60 mph.
(COLD INFLATION PRESSURES MUST NEVER EXCEED 100 PSI.)
CONVERSION OF PLY RATING TO
LOAD RANGE DESIGNATION
Load Range
Replaces Ply Rating
A
2
B
4
C
6
D
8
E
10
F
12
G
14
H
16
J
18
L
20
M
22
N
24
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