Toyota PRIUS 50 2020 Series Owner's Manual page 484

482
7-2. Steps to take in an emergency
Installing the spare tire
Remove any dirt or foreign mat-
1
ter from the wheel contact sur-
face.
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 spare tire and loosely tighten each wheel nut by hand by
2
approximately the same amount.
When replacing an aluminum
wheel with
(including a compact spare
tire), 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.
a steel wheel
Tapered portion
Disc wheel seat
Disc wheel
Washer