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T-12-T
Maintenance
Tires
Before mounting tires onto wheels make certain that the rim size and contour is
approved for the tire as shown in the Tire and Rim Association Yearbook or the tire
manufacturers catalog. Also make sure the tire will carry the rated load. If the load is
not equal on all tires due to trailer weight distribution, use the tire rated for the heaviest
wheel position.
To determine the tire capacity for ST tires, use the capacity rating molded into the
tire.
Use tire mounting procedures as outlined by the Rubber Manufacturers Association
or the tire manufacturer.
Inflation Pressure
Correct inflation pressure for the ST235/80R16 tire is 65 psi and is the most impor-
tant factor in tire life. Inflation pressure should be as recommended by the manufac-
turer for the load. Pressure should be checked cold before operation. Do not bleed air
from tires when they are hot. Check inflation pressure weekly during use to insure the
maximum tire life and tread wear. Use the tire wear diagnostic chart to help you pin-
point the causes and solutions of tire wear problems.
NOTE:
Tire wear should be checked frequently because once a wear pattern be-
comes firmly established in a tire it is difficult to stop, even if the underlying cause is
corrected.
