Mitsubishi LANCER Owner's Manual page 563

For emergencies
2. To remove the spare tire, remove the installation clamp
(C) by turning it counterclockwise.
NOTE
The clamp cannot be used for a normal size tire. Store a
normal size tire under the luggage floor board.
6
6-12
NOTE
Put the spare tire under the vehicle body near the jack.
This makes it safer if the jack slips out of position.