Anyone with a 23-25 Prius who bought their own spare tire what size did you buy and did you have any storage issues?
Temp spare info is in the Owner's Manual. You can also download a pdf here. Page 525: @Hammersmith has a definitive thread on this as well.
I hit a curb and put my rear passenger tire out of alignment. It wore off the edge until it blew. I replaced it with a while new set. At 50,000 kms they were due anyway.