Toyota Prius c 2014 Owner's Manual page 470

5-2. Steps to take in an emergency
Installing the compact spare tire
STEP 1
Install the spare tire and loosely tighten each wheel nut by
STEP 2
hand by approximately the same amount.
468
Tapered portion
Disc
wheel
seat
Tapered portion
Disc
wheel
seat
Remove any dirt or foreign mat-
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.
When replacing a steel wheel
with 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 a compact spare tire,
tighten the wheel nuts until the
tapered portion comes into loose
contact with the disc wheel seat.