Spare tire in the trunk

Those two are a near match
The 245 is 80.35 roll-out
the 205 is 79.48 roll-out
The diameter difference is about 1/4 inch. Why wouldn't you just use another 245. Oh I see the laying flat tire is too high, duh.
Yeah I haven't ever carried a spare in my Barracuda. I use the space to organize my tuning parts. I mean what would I carry? A 27 for the rear or a 24.5 for the front? I did have a tire go down on me tho, this one time. Three miles from home. I stuck out my thumb at the first passer-by, who gave me a lift right to my door; I love this province.
-----need to have a spare tire to pass a safety, no safety, no licence plates