This is acceptable but not a good swap. The 175/65-14 will be 2.92% smaller in overall diameter which will cause your speedometer to read 61.8 at a true 60 mph. If you wish to move to a 65 series tire then install a set of 185/65-14 which is an excellent swap and almost identical in overall diameter. Your speedometer will read 60.4 at a true 60 mph.
No, the 185 70 r14 tire cannot be substituted for a 175 65 r14 tire. The 70 series tire has a larger diameter and is not recommended that you substitute on a 65 series tire.
Yes, this is an acceptable swap.
No
Yes they can. You do realise this gives less tread on the road, which is not always a good idea,
Usually The tread is 10 millimeters wider and the tire is 12 mm taller overall but mounts on the same wheel
You can although you will be putting a much smaller tire on and it'll cause your speedometer to be off by about 4 1/2 mph at highway speed (speedo reading 65 actual speed would be around 61 1/2 mph). A better substitute would be a 175/75.
Yes, this is an acceptable swap. Know that your speedometer will read 59.3 at a true 60 mph.
Yes, that is reasonable.
This is acceptable but not a good swap. The 175/65-14 will be 2.92% smaller in overall diameter which will cause your speedometer to read 61.8 at a true 60 mph. If you wish to move to a 65 series tire then install a set of 185/65-14 which is an excellent swap and almost identical in overall diameter. Your speedometer will read 60.4 at a true 60 mph.
Yes, this is an acceptable swap as there is only 1% difference in overall diameter between the 2 sizes.
Yes, they can
Yes, they can