Lexus 2003 LS Owner's Manual page 327

A Have the wheel nuts tightened by torque wrench at
103 N·m (10.5 kgf·m, 76 ft·lbf.), as soon as possible
after changing wheels. Otherwise, the nuts may
loosen and the wheels may fall off, which could cause
a serious accident.
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10.Reinstall the wheel ornament.
Put the wheel ornament into position and then tap it firmly with
the side or heel of your hand to snap it into place.
CAUTION
Take due care in handling the ornament to avoid
unexpected personal injury.
IN CASE OF AN EMERGENCY
11. After changing the wheel, check the air pressure of the
replaced tire. Stow all the tools, jack and flat tire securely.
If the pressure of the replaced tire is low, drive slowly to the
nearest service station and fill to the correct pressure.
Do not forget to reinstall the tire valve cap as dirt and moisture
could get into the valve core and possibly cause air leakage.
If the cap is missing, put a new one on as soon as possible.
This is the same procedure for changing or rotating your tires.
CAUTION
Before driving, make sure all the tools, jack and flat tire
are securely in place in their storage location to reduce
the possibility of personal injury during a collision or
sudden braking.
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