Yes, they are
Yes, that is a common size for that car.
No. There is 4.34% difference in the diameter which is too much. Your speedometer will be off 3 mph. 195/70-15 would be a better swap for 215/60-15 tires. It will only be 2.3% off and the speedometer will be off only 1.4 mph.
No, if you are going to a 70 series tire then you will need to go with 195/70-15.
all season radials usually have 215-65R-15 tire size. Other sizes that also work are 205-70R-15 or 205-75R-15
No it will not. If I understand your question correctly, the tire you are looking at is 15" in diameter and your rim is 16" in diameter. You need to buy tires that are made for your diameter wheel, 16".
205- 70R -15.
Technically, yes. Your speedo will be way off however. Those tires will be a lot taller than what the computer is set up for. It will show that you are going much slower than you actually are.
215 x 70R 15
175/70r/13
NO, the rim size is different.
The original tires are 225/70R 16