from earlier in this thread:
A full size spare will fit in the space the normal spare sits in, but you have to kinda fold up the bottom part of the removable cubbyhole area that you would have to pull out to get to the spare. What I did when I had my Insight and travelled, was to fit the full size spare in place (no need to use the tie down bolt), fold up about the bottom two inches of the cubbyhole thingy, get it back in place, and put the matting back down. Once in, it'll stay. You can either put the jack in the cubbyhole thingy or wedge it in beside the fullsize spare below.
in other words, yes.
A full size spare will fit in the space the normal spare sits in, but you have to kinda fold up the bottom part of the removable cubbyhole area that you would have to pull out to get to the spare. What I did when I had my Insight and travelled, was to fit the full size spare in place (no need to use the tie down bolt), fold up about the bottom two inches of the cubbyhole thingy, get it back in place, and put the matting back down. Once in, it'll stay. You can either put the jack in the cubbyhole thingy or wedge it in beside the fullsize spare below.
in other words, yes.