No, this is not a good substitute at all. This swap is a 4.34% difference in specifications which is never good. You should never go beyond a 3% difference. Your speedometer will be off, and your car will handle differently.
No, there is too big a difference in diameter.
Normally. yes.
no there is too much height difference
Yes, that is a pretty good substitute.
Yes, that is reasonable as long as both sides match.
215 65 r 15 or 205 60 r 15
The 205/70/r15 is 26.3 inches tall. The 215/65/r16 is 27 inches tall. Never mix different size tires on different rims.
Yes, they are only slightly different.
Yes, this is a good alternative. Your speedometer will be only be 0.6 mph too fast.
It is an acceptable substitute, but know that your speedometer will read 58.7 at a true 60 mph.
no
Yes, if you can live with an inaccurate speedometer.