SECTION 13: WHEELS, HUBS AND TIRES
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual | Section 13 revised Jan 2022
2. WHEELS
The vehicle is equipped with hub-mounted
wheels, all studs and nuts have right-hand
threads. Steel wheels are installed on the
vehicle and are mounted with radial tubeless
tires.
All wheel dimensions are 22.50 X 9.0 inches
(571.5 X 228.6 mm) for 315/80 R22.5 tires
FIGURE 1:STEEL WHEEL ARRANGEMENT13001
3. WHEEL MAINTENANCE
Wheel maintenance consists of periodic
inspections. Check all parts for damage and
make sure that wheel nuts are tightened to the
proper torque. In the case of a new vehicle, or
after a wheel installation, stud nuts should be
tightened every 100 miles (160-km) for the first
500 miles (800-km) to allow setting in of
clamping surfaces.
CAUTION
Wheel studs and nuts must be kept free from
grease and oil. No lubricant whatsoever
should be used. Cleanliness of the wheel and
its rotor mating surfaces is important for
proper wheel mounting.
It is recommended to add some rust protection
lubricant on the outside diameter of the hub (to
facilitate future removal).
It is also important that wheel stud nuts be
tightened alternately on opposite sides of the
wheel. Refer to Figure 3 for the suggested
tightening sequence.
3.1 INSPECTION
Tighten stud nuts progressively as shown in
Figure 3. The final tightening should be done
with a torque wrench.
TORQUE : 450-500 lb-ft (610-678 Nm)
FIGURE 2: TIGHTENING SEQUENCE 13018
3.2 SINGLE WHEEL REMOVAL
1. Stop engine and apply parking brake.