yes, it is original size
185/65/R15
Yes, that is a reasonable substitution.
Can you put a 215 70 r15 tire and a 215 65 r15 tire on same car
185 65 14
Yes, this is an excellent substitute.
No, your speedometer will be off and power and fuel mileage will be adversely effected.
No
You can but your speedometer will be off. Want to go wider then go with a 195/60-15.
Of course you can, but it is not advisable. Your speedometer will read 58.6 at a true 60 mph. Stick with the OEM size.
185/65 R15
As far as I know, the different sizes you can fit are: 185/60 R15, 185/65 R15, 195/55 R15, 195/60 R15, 205/55 R15 and 215/50 R15 on the 6x15 alloys. Chris from DIDCOT TYRE & EXHAUST
No, the 195/65-15 tire is way to large in diameter. Your speedometer will be off 5 mph, and your handling and mpg will suffer.