If there is enough clearance for the wider tire, yes.
Yes
NO, absolutely not. Never, ever, mix tire sizes on the same axle. You could put a set of 215 on the front and then a set of 205 on the rear but not a 205 & 215 on the same axle. Tires on each axle must be the exact same size.
Yes you can but it is not advisable. The 215 tire will be 2.09% larger in overall diameter. Your speedometer will read 58.7 at a true 60 mph. You will also have less power at take off. Stick with the OEM size.
Yes, you can.
215/70R15
215/70r15
yes but you will have to have different rims as well
NO, the rim size is incorrect.
Yes, you can substitute the 205/75-15 for the 215/70-15.
I doubt it as there is 2" difference in diameter.
A 215 is a larger tire you would have to make sure it would clear when you turned your tires and when they moved up and down while driving. Also they may throw your cars computer off which would need recalibrating.
No, a 205/65-16 is 1.18" too big in diameter. Your speedometer will read 57.3 at 60 mph. The vehicle will not handle or ride as it should.
Normally. yes.