Yes you can. The first number on the tire size is big the tire is from bead to bead. Your car will sit just a bit lower and you speedometer will read a little fast.
P215/70 exchange p205/75
yes
no
Yes, that is a pretty good substitute.
Yes, they can
Yes, they can
Yes, you can
You can substitute these tries if need be. But if you do this your car will be off balance.
Normally. yes.
Yes, this is an excellent substitute.
Yes, that is a reasonable substitution.
Yes, you can
no there is too much height difference