Toyota prius Owner's Manual page 525

 The compact spare tire
The compact spare tire is identified by the label "TEMPORARY USE

ONLY" on the tire sidewall.
Use the compact spare tire temporarily, and only in an emergency.
 Make sure to check the tire inflation pressure of the compact spare tire.
(P. 586)
 If you have a flat front tire on a road covered with snow or ice
Install the compact spare tire on one of the rear wheels of the vehicle. Per-
form the following steps and fit tire chains to the front tires:
STEP 1 Replace a rear tire with the compact spare tire.
Replace the flat front tire with the tire removed from the rear of the
STEP 2
vehicle.
STEP 3 Fit tire chains to the front tires.
 Jack point guide
PRIUS_OM_OM47871E_(EE)
5-2. Steps to take in an emergency
The jack point guides are located under
the rocker panel. They indicate the jack
point positions.
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