Ranger 2WD V6-177 2.9L (1989)
Tires: Technical Service Bulletins
Tires - Best Pressure For Load Application
^33GTIRE - LOAD CAPACITY VERSUS INFLATION PRESSURE
^
TIRE - P - METRIC PASSENGER TIRES USED ON LIGHT TRUCKS
^
TIRE WEAR - EFFECTS OF INFLATION AND LOAD
Article No. 89-9-16
LIGHT TRUCK:
1984-89 ALL LIGHT TRUCK LINES
ISSUE:
Tire wear can be affected by inflation and load. Good tread life is dependent on maintaining proper air pressure in the tires. Other factors
that affect tire wear are:
^
alignment
^
speed
^
road surfaces
ACTION:
Keep tires inflated to the recommended pressures to obtain maximum tread life. Use the following charts and procedures to arrive at the best
tire pressure for each load application.
FIGURE 1
The chart in Figure 1 shows the affect of inflation and load on tire tread life. Use the chart by finding the specified inflation pressure for the vehicle as
shown on the certification label and locating that pressure on the specified inflation pressure on the chart. The affects of actual air pressure and load can
now be read directly off the chart.
Tire load carrying capacity is a function of tire design and inflation pressures. Each tire has molded into the sidewall a maximum pressure for a specific
usage. Use the following guidelines to determine load carrying capacity.
