Toyota Prius Owners Manual
6. Remove the wheel nuts andchange tires.
Lift the flat tire straight off and put itaside.
Roll the spare wheel into position andalign the holes in the wheel with thebolts. Then lift up the wheel and getat least the top bolt started throughits hole. Wiggle the tire and press itback over the other bolts.
Before putting on wheels, remove anycorrosion on the mounting surfaceswith a wire brush or such. Installationof wheels without good metal−to−metalcontact at the mounting surface cancause wheel nuts to loosen and eventuallycause a wheel to come off whiledriving.