NO, this is not an acceptable swap. The 75 series tire will be 7.02% smaller is overall diameter. You should never go under or over 3%.
You can, of course, but it is not a recommended substitute. It is never acceptable to go over or under 3% of the OEM size. The 235/75-15 is 4.09% larger in overall diameter than the OEM tire. You can however switch to a 235/70-15 which is an almost perfect swap at only 0.92% larger. This would be the size you need to go to.
215/75R15 but I have 235/75 on mine and give a much smoother ride plus fills the wheel wells and gives it a more complete look.
235/75R15, I personally have 30x9.5r15 on mine.
that is fine, check for rubbing under wheel well.
No, get a tire shop to check first.
If its a Ford Ranger XL 4x4 the stock tire size is 215/75R15. On the 1994 Ranger you had an additional option size of 235/75R15 and 265/75R15 (31x10.50) depending on the engine size. For the 4x2 models, I believe the options were 195/70R14, 215/70R14, and 225/70R14.
yes
Yes, they will fit.
yes, but they will be quite a bit smaller as they are 4 sizes smaller.
No, the 235/75-15 would be far to large in overall diameter. Your speedometer would be off over 4.5 mph. Performance and handling will be adversly effected. You can however install 235/70-15 which will work very well and your speedometer will only be off 1/2 mph. Your car's performance handling will not be adversly effected.
That size will work but your speedometer will be off .8 mph too fast.
235/75r15