Ideally you should have four tires on the car that match. With that being said you can certainly replace your 65r tires with 70r tires. The 70 refers to the width of the tire and a 70 is slightly narrower than a 65. The lower the number the wider the tire.
I would not put 1 65 width tire on one side and a 70 width on the other side of the car, they will wear unevenly.
Yes, they are
The original tires are 225/70R 16
No, if you are going to a 70 series tire then you will need to go with 195/70-15.
YES, no problem.
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".
No, all tires need to be the same size and close to the same amount of tread life for the 4wd to operate properly.
The 235 / 65 / R16 is the lower profile tire ( 28 inches in diameter instead of the 29 inches in diameter for the 235 / 70 / R16 ) Both size tires are the same width
175/70r/13
Can a 225/60R 16 tire replace a 235/70R 16 tire.
There is no Honda Civic HX model. The OEM size for this vehicle is 185/70-14 if it an LX model.
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, the rim size is different.