88 is the max weight for the tyre, h refers to the max speed allowed for the tyre, in this case 139 mph.
Yes, they can
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, they can
Yes, this is an acceptable swap.
185/70-R14
185/70-R14
The Tire Size is 185/70/R14
185/70/R14
185/70 r14 88 s
Definitely no.
Oh, dude, changing your tire size from 185 70 r14 to 195 70 r14 is totally possible. Just make sure your new tires fit properly and won't mess up your speedometer readings. But hey, if you wanna go for it, go ahead and upgrade those bad boys!
No, this is not a good swap as the 15" tire will be too large. Your speedometer will read 58 mph at a true 60 mph. You can use 185/65-15 which is a very good swap.