Yes, they can
Yes, they can
Yes, that is reasonable.
Yes, this is an acceptable swap.
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
Yes, this is an acceptable swap. Know that your speedometer will read 59.3 at a true 60 mph.
Yes of course they can, the difference between a 185/60/14 tyre and a 185/65/14 tyre is the tyre is 5mm difference in height. Just make sure you replace them in pairs(front two/back two/all four) and not one single tyre as this will put your wheel alignment/tracking out of position. The 60 and 65 is the % of width. The difference in profile aka aspect ratio, height of sidewall is 111mm on the 60 and 120.25 on the 65 a 9.25mm difference
Yes, this is an acceptable swap as there is only 1% difference in overall diameter between the 2 sizes.
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.
Please give the whole number, NOT just part of it. Whole number will be something like this - P185/60R-14 95H . IF the last number and letter are same then it is a substitute
Yes they can be interchanged and changed out. When doing this change one must make sure they are changed out in equal pairs. The two fronts and two backs have to be changed at the same time in order for it to work. One may also need to change the axle in some extreme conditions.
No