Lexus GS450h Owner's Manual page 504

504
7-2. Steps to take in an emergency
Installing the spare tire
Remove any dirt or foreign matter
1
from the wheel contact surface.
If foreign matter is on the wheel contact
surface, the wheel nuts may loosen
while the vehicle is in motion, causing
the tire to come off.
Install the tire and loosely tighten each wheel nut by hand by approximately
2
the same amount.
When replacing an aluminum wheel
with a steel wheel, tighten the wheel
nuts until the tapered portion comes
into loose contact with the disc
wheel seat.
When replacing an aluminum wheel
with an aluminum wheel, turn the
wheel nuts until the washers come
into contact with the disc wheel.
Lower the vehicle.
3
GS450h_300h_OM_OM30F92E_(EE)
Tapered portion
Disc wheel
seat
Disc wheel Disc wheel
Washer