No your wheels are 15 inches, you can only use r15 tires
r16 is one inch taller from the center of the wheel
No. It is very dangerous to attempt to put the wrong tires on a rim.
That depends on if the 15 inch rims will fit over the brake calipers.
The rim size must match the tires unless you also change the rims to match the tires.
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, you can.
Yes, but check carefully for steering clearance
Yes, you can
NO, rim size is incorrect.
Can you replace 205/65/R15 with 205/75/R15
Yes, this is an excellent substitute.