No, the 205 tire will be over 5% larger, your speedometer will read 56.9 mph at a true 60 mph. You should never go over 3% difference in diameter. A good swap to a 65 series tire would be 185/65-15.
Yes, they can
Yes, you can
no
Yes, they can
No, your speedometer will be 3 mph too slow. A 205/60-15 will be a good substitute with almost no difference in overall diameter.
Yes, that is a pretty good substitute.
Normally. yes.
Yes, you can
Yes, this is an excellent substitute.
Your best choices are 205 60 r15.
no there is too much height difference
Sure, if you change all four; the difference is about a quarter of an inch in diamater.